Reduce Vehicle Emissions decrease the amount of CO2 being removed from the atmosphere
Many of us drive cars every day, which are one of the greatest sources of CO2 in our environment. With a share of 31% of all emissions, this is the second-largest source of carbon dioxide produced in the US. However, this is not simply restricted to personal vehicles; anything that has an engine powered by gasoline or diesel contributes to this issue.
Limiting the quantity of CO2 your own car emits is the best personal solution to this problem. To make all of your journeys a little less wasteful, choose a hybrid or gas-efficient car. Additionally, carpool with colleagues or acquaintances, or whenever possible, take public transit to reduce the automobiles moving through the streets.
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automobiles moving through the streets.
Which test tube has the largest amount of precipitate? record the ratio of cuso4 to na2s used. what is the indicated by the maximum amount of particiapation
The third test tube has the largest amount of precipitate. The correct ratio for this reaction is 1:1.
What do you mean by test tube?
Test tubes intended for the general chemical work are usually made of glass, and for its relative resistance to heat. Tubes made from the expansion-resistant glasses, mostly borosilicate glass or fused quartz, can withstand high temperatures up to several hundred degrees Celsius.
Chemistry tubes are available in a multitude of the lengths and widths, typically from 10 to 20 mm wide and 50 to 200 mm long. The top often features a flared lip to aid pouring out contents.
A chemistry test tube typically has flat bottom, a round bottom, or a conical bottom. Some test tubes are made to accept a ground glass stopper or screw cap. They are often provided with small ground glass or white glaze area near the top for labelling with a pencil.
Test tubes are widely used by the chemists to handle chemicals, especially for qualitative experiments and assays. Their spherical bottom and vertical sides reduce mass loss when pouring, make them easier to wash out, and allow convenient monitoring of contents. The long, narrow neck of the test tube slows down the spreading of gases to the environment.
Test tubes are convenient containers for heating the small amounts of liquids or solids with a Bunsen burner or alcohol burner. The tube is usually held by its neck with clamp or tongs. By tilting tube, the bottom can be heated to hundreds of degrees in the flame, while the neck remains relatively cool, possibly allowing vapors to condense on its walls. A boiling tube is large test tube intended specifically for boiling liquids.
In reaction:
CuSO4 + Na2S ⇒ CuS + Na2SO4
Third test tube had largest amount of precipitate.
In third test tube all Cu2+ ion converted into CuS precipitate.
Test Tube Ratio
1 5:1
2 2:1
3 1:1
4 1:2
5 1:5
so, the correct ratio is 1:1.
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a compound contains only c, h, and n. combustion of 35.0 mg of the compound produces 53.0 mg co2 and 32.6 mg h2o. what is the empirical formula of the compound?
The empirical formula of the compound is CH₃N
How to determine the mass of Carbon Mass of CO₂ = 53 mgMolar mass of CO₂ = 44 g/mol Molar of C = 12 g/mol Mass of C =?Mass of C = (12 / 44) × 53
Mass of C = 14.45 mg
How to determine the mass of HMass of H₂O = 32.6 mgMolar mass of H₂O = 18 g/mol Molar of H = 2 × 1 = 2 g/mol Mass of H =?Mass of H = (2 / 18) × 32.6
Mass of H = 3.62 mg
How to determine the mass of NMass of compound = 35 mgMass of C = 14.45 mgMass of H = 3.62 mgMass of N =?Mass of N = (mass of compound) – (mass of C + mass of H)
Mass of N = 35 – (14.45 + 3.62)
Mass of N = 16.93 mg
How to determine the empirical formula C = 14.45 mgH = 3.62 mgN = 16.93 mgEmpirical formula =?Divide by their molar mass
C = 14.45 / 12 = 1.204
H = 3.62 / 1 = 3.62
N = 16.93 / 14 = 1.209
Divide by the smallest
C = 1.204 / 1.204 = 1
H = 3.62 / 1.204 = 3
N = 1.209 / 1.204 = 1
Thus, the empirical formula of the compound is CH₃N
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4.2 Recent research has developed a new type of substance, ionic liquids.
lonic liquids have melting points at close to or below room temperature.
lonic liquids are used in batteries as they conduct electricity.
Explain why ionic liquids are used in batteries but solid ionic compounds are not.
[3 marks]
Ions in solid ionic compounds are not free to move, so they lack electrical conductivity. While liquid compound have excellent electrochemical stability and are inflammable-free.
How ionic liquid differs from ionic solid?Ionic liquids differ from solid ionic compounds in their characteristics. They have low melting points, for instance. Low is generally defined as 100 °C or 212 °F (this number may look familiar because it is the boiling point for water, where it turns from a liquid to a gas).
One of the most significant advantages of ionic liquids is their lack of volatility, which results in significantly lower toxicity when compared to low-boiling-point solvents. Because sudden pressure surges are not possible, ionic liquids can also result in safer microwave synthesis techniques.
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what type of effects would you see take place on the amino acid cysteine when observing its interaction with oxygen?
The -SH is involved in the oxidation and reduction of the amino acid cysteine (sulfhydryl group). By removing two hydrogen atoms, the oxidation of two sulfhydryl groups causes the creation of a disulfide bond.
What is amino acid?
Organic substances known as amino acids have both amino and carboxylic acid functional groups. Although there are hundreds of different amino acids in nature, proteins, which are made up of alpha-amino acids, are by far the most common. In the genetic code, only 22 alpha amino acids are present.
Alpha-, beta-, gamma-, or delta-amino acids can be categorized according to where the main structural functional groups are located; further classifications relate to polarity, ionization, and the type of side chain group (aliphatic, acyclic, aromatic, containing hydroxyl or sulfur, etc.). Amino acid residues are the second-largest component of human muscles and other tissues, behind water, in the form of proteins. Aside from serving as protein residues, amino acids also take involvement in the transfer of neurotransmitters and biosynthesis. They are believed to be essential to the origin of life on Earth and its ability to survive.
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Write the net ionic equation for the precipitation reaction that occurs when aqueous magnesium chloride is mixed with aqueous sodium phosphate. Be sure to include the physical states of all species.
Ionic equation is
[tex]Na^{+} _{3} }[/tex](aq) + 2[tex]PO_{4} ^{-3}[/tex](aq) + 3[tex]Mg^{2+}[/tex](aq) + 3[tex]Cl_{2} ^{-}[/tex]-----> [tex]Mg_{3}(PO_{4} )_{2}[/tex]((s) + 3[tex]Na^{+}[/tex](aq) + 3[tex]Cl^{-} _{2}[/tex](aq)
Here the reaction of aqueous magnesium chloride is mixed with aqueous sodium phosphate.
i.e., Mg[tex]Cl_{2}[/tex] react with [tex]Na_{3}PO_{4}[/tex]
Here the reaction is the replacement reaction, so when both magnesium chloride reacts with sodium phosphate it forms magnesium phosphate and sodium chloride.
3Mg[tex]Cl_{2}[/tex] (aq) + 2[tex]Na_{3} PO_{4}[/tex] (aq) -------> [tex]Mg_{3} (PO_{4} )_{2}[/tex](s) + 6NaCl (aq)
And the ionic equation is:
[tex]Na^{+}_{3} }[/tex] (aq) + 2[tex]PO^{3-} _{4}[/tex] (aq) + 3[tex]Mg^{2+}[/tex](aq) + 3[tex]Cl^{-} _{2}[/tex] (aq)-------> [tex]Mg_{3} (POx_{4} )_{2}[/tex](s) + 3[tex]Na^{+}[/tex](aq) + 3[tex]Cl^{-} _{2}[/tex] (aq)
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Factories in the midwest spew out nitrogen oxide and sulfur that fall as acid rain in the northeast, and northeastern states can do nothing about it. this is an example of?
Factories in the midwest spew out nitrogen oxide and sulfur that fall as acid rain in the northeast, and northeastern states can do nothing about it.
What is acid rain?
Due to atmospheric pollution, rainfall has become so acidic that it harms the environment, primarily lakes and forests. Burning coal and other fossil fuels for industrial purposes produces waste gases that are high in sulphur and nitrogen oxides, which react with atmospheric water to form acids. The main reason for acid rain is this.
This concept is usually referred to as "acid rain" because it covers a range of acidic precipitation. Acidic deposition can happen in two different ways: moist and dry. Wet deposition is the general term for any sort of precipitation that removes acids from the atmosphere and deposits them on the surface of the planet.
Chemicals released by Midwest factories end up in the Northeast as acid rain, and the region's states are powerless to stop it on their own. Only federal regulations can address that. Different laws may have negative repercussions that spread from one state to another.
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which compound(s) will not form a yellow precipitate when treated with excess iodine in the presence of naoh? select the unreactive structure(s):
Iodoform reaction is the process of heating a chemical with an alkaline solution of iodine to produce a yellow precipitate. This test yields no results for methyl alcohol.
What is an alkaline solution?An alkaline solution is one that contains a soluble base and has a pH value greater than 7. Like NaOH. Additionally, it might be a base and water mixture. Numerous industrial applications exist for alkaline solutions.
Sodium hydroxide, potassium hydroxide, magnesium hydroxide, and calcium carbonate are a few examples of alkaline solutions. There are several uses for each of these solutions in various sectors.
The bottom line is that all you have to do to create an alkaline solution for a straightforward science experiment is mix baking soda and water. Baking soda should be measured. Your solution will get more alkaline as you add more baking soda.
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glycerol is syrupy liquid often used in cosmetic a 2.50 l sample of pure glycerol has a mass of 3.10^3 g what is the density
The density of the glycerol is 1250g/l.
What is density?Density refer to the mass of an object or particles with ratio to its volume.
Density =mass÷volume.
Mass of the object is 3.10^3
volume is 2.50l
Density = 3.10^3÷2.50
Density of the glycerol is 1250g/l
Therefore, The density of the glycerol is 1250g/l
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if argus fell into the waters around labrador (temperature 1°c, or 34°f), what reaction is most likely to happen?
Piloerection is the reaction most likely to happen if Argus fell into waters around Labrador.
Piloerection is a phenomenon or a reaction causing erection of hairs or papillae of the skin due to the contraction of the tiny arrectores pilorum muscles (tiny muscles located at the origin of each body hair) that elevate the hair follicles above the rest of the skin and moves hair vertically, so hair seems to stand o the end.
When Argus fell into the water of temperature 1°C, or 34°F around Labrador, piloerection happens because Argus might be scared and cold, which makes his hair stand up or cause goosebumps.
Piloerection is a primary physical elicitor kind of response to cold or shock. In Argus and other animals, erection of coat hairs or feathers serves to increase the isolation layer of air around the body.
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A cube containing two sodium atoms has a mass of 7.64 x 10-23 g and a density of 0.963g/cm3. calculate the length of a side of the cube in pm.
Sodium crystallizes in the cubic lattice and the edge of the unit cell is 430pm.
What is crystallizes?When atoms or molecules are strongly ordered into a structure known as a crystal, the process of crystallization, also known as crystallisation, results in the formation of a solid. Precipitation from a solution, freezing, and—less frequently—direct deposition from a gas are a few of the processes that crystals can go through to develop. When liquid crystals are formed, time of fluid evaporation and variables like temperature and air pressure have a significant impact on the crystal's characteristics.
There are two main stages to crystallization. The first is nucleation, which is the emergence of a crystalline phase from either a supercooled liquid or a supersaturated solvent. The second process, known as crystal growth, results in a crystal state by enlarging the size of the particles.
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Recall that the color of neon lights is dependent on the type of gas that is in
the sign. Helium gas produces yellow light, neon gas produces red light, and argon gas
produces blue light. Explain what is happening to the electrons of the gas atoms in these
signs and why each gas produces different light. Which electrons have the most energy?
Why can't an atom's electrons ever be located between orbits?
Why does you body need a balance of foods high in protein, healthy fats, and carbohydrates?
Answer
Provide the body with the calories, or energy, to grow as well.
What is the optimal number of receiver buffers required for a sliding window protocol and 4 sequence number?
The optimal number of receiver buffers required for a sliding window
protocol With 4 bits, the number of sequence numbers possible = 16
How do you calculate optimal window size in sliding window protocol?Maximum window size = 1 + 2*a where a = Tp/Tt Minimum sequence numbers required = 1 + 2*a.
All the packets in the current window will be given a sequence number.Although the Stop and Wait ARQ provides error and flow control, it may have serious performance implications because the sender always waits for acknowledgment even when the next packet is prepared to be sent. Consider a scenario in which you have a high bandwidth connection and a high propagation delay (you are connected to a server in another country via a high-speed connection), but you are unable to utilize this full speed due to stop-and-wait restrictions.This efficiency issue is resolved by the sliding window protocol by sending multiple packets with a larger sequence number at once. Similar to pipelining in architecture, the concept.A flow control protocol is the sliding window protocol.The sender is able to send several frames before the acknowledgments become necessary.
so the answer is the optimal number of 4 sequence numbers is 16
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Describe why chemical energy potential energy is a form potential energy
Chemical energy is a form of potential energy because the energy stored in the chemical bonds can be used to generate work when they are broken down in exothermic reactions.
What is chemical energy?Chemical energy is a form of potential energy because the bonds of compounds (e.g. foods) may release energy when they are break down during enzymatic reactions, thereby storing potential energy that is transformed into kinetic energy.
In conclusion, chemical energy is a form of potential energy because the energy stored in the chemical bonds can be used to generate work when they are broken down in exothermic reactions.
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true or false
The mass number of an atom is equal to the total number of
protons and neutrons.
Answer:
True
Explanation:
I'm 90% sure it's true
Calculate the molarity when 0.554 g NH3 is dissolved to make 15.0 mL solution.
Taking into account the definition of molarity, the molarity of the solution is 2.17 g/mL.
Definition of molarityA solution is a homogeneous mixture where all the particles that exist in it. The chemical present in the greatest quantity is called the solvent, while the other components are called solutes.
Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.
The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:
molarity= mass÷ volume
Molarity is expressed in units mol/L.
This caseIn this case, you have:
mass of NH₃= 0.554 gmolar mass of NH₃= 17 g/molemoles of NH₃= mass of NH₃÷ molar mass of NH₃= 0.0326 molesvolume= 15 mL= 0.015 L (being 1000 mL= 1 L)Replacing in the definition of molarity:
molarity= 0.0326 moles÷ 0.015 L
Solving:
molarity= 2.17 moles/L
Finally, the molarity of the solution is 2.17 g/mL.
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What is the atomic number of a hydrogen atom?
Answer:
1
Explanation:
There is proton and 1 electron in the atomic structure
The chester company will increase its automation for the cure product by 2.0. assuming no further change in capacity, how much will this investment in automation cost?
By increasing its automation for the Cozy product, the Chester company's investment in automation will increase by $21,600,000.
How much does automation cost?A capital expenditure will be required to implement automation in any environment. The capital expenditure will frequently result in a significant increase in expenses for a given quarter, but it will be a worthwhile investment over the course of a company's financial statements.Automation was costly for five main reasons: Highly trained individuals who are developers in any way: They write complex code, switch VMs and browsers on and off, and deal with large-scale performance testing. Finding great developers is difficult.The risks include the possibility that workers will become slaves to automated machines, that vast computer data networks will invade human privacy, that human error in technology management will endanger civilization, and that society will become economically dependent on automation.To learn more about Automation cost refer to
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2. Why does each metal ion in the lab have its own unique spectrum when energized?
Answer: each element contains differing numbers of electrons and thus different energy levels.
Explanation: All of the atoms of a particular element have the same number of protons, but could differ in the number of neutrons or the number of electrons. If the number of electrons changes, the atom becomes a charged particle and is called an ion. Each atom has a set of energy levels associated with it.
Was either set-up successful in completely separating the methanol from the water? if not, why do you think it was unsuccessful?
The success of completely separating the methanol from the water is
Alcohol.
Why do you think it was unsuccessful?Because water is a polar solvent and methanal is also a Polar compoundBoth Water and Methanal are miscible, they cannot be separated.Polar Compounds only dissolve in Polar solvents.It is possible due to the electrical charges tugging on various solute molecule parts. The negatively charged side of a solvent molecule attracts the positively charged ions of the solid compound and vice versa. The polar compound can then be dissolved in the polar solvent thanks to this. The ions are evenly dispersed throughout the solvent as a result of this activity. Regarding the solvent's polarity, it essentially develops as a result of the bonds between atoms with various electronegativity values, which result in the formation of the molecule.When carbon forms multiple bonds to other elements, these bonds are polar. Both the carbon-oxygen double bond in formaldehyde (methanal) and the carbon-nitrogen triple bond in acetonitrile (cyanomethane) are polar.
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Vancomycin is an especially useful antibiotic for treating infections in cancer patients on chemotherapy and renal patients on dialysis. Which oh groups are bonded to sp2 hybridized carbon atoms?.
Carbonyl groups is bonded to sp2 hybridized carbon atom.
The interaction within a carbonyl group, when both the oxygen and carbon atoms are sp2 hybridized, is explained by the same hypothesis.
When a carbon atom bonds with one s-orbital and two p orbitals, it becomes sp2 hybridized. Between the three atoms, 2 individual connections and a double bond are formed. The hybridization orbitals are arranged in a triangle with bonds at 120° angles.
A carbon atom is the double to an oxygen atom to form a carbonyl group, which is a chemical organic functional group. Aldehydes and ketones, which are typically joined to another carbon compound, are the simplest carbonyl groups. Many aromatic chemicals have these structures, which contribute to flavor and fragrance.
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if a plot of 1/[a] versus time produces a straight line with a positive slope for the reaction a → b c, what is the order of the reaction? a) zero b) first c) second d) third e) cannot determine order from this information
A plot of 1/[a] versus time produces a straight line with a positive slope for the reaction a → b+ c. The reaction is a second order reaction.
What is order of a reaction?
The strength of the rate's dependency on the reactant concentration determines the reaction's order. As a result, the rate of a first-order reaction will undoubtedly depend on the concentration of a single species, a second-order reaction will undoubtedly depend on the concentration of two species, and so on.
rate = k{[A]^x + [B]^y}
Thus, for the given reaction, order is 2, that is a plot of 1/[a] vs time producing a straight line with positive slope shows second order kinetics.
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What is a metal and nonmetal that equals Ionic bond
M+NM= Ionic Bond
if possible can you show the covalent bond too?
GIVING 80 POINTS AND BRAINLIEST
A metal and nonmetal which forms or equals to ionic bond is sodium and chlorine respectively.
The force of attraction which binds or holds together two different atoms which are metals and nonmetals is known as ionic bond.
Na + Cl ------ NaCl
Metal Nonmetal
Sodium has 1 valence electron and chlorine has 7 valence electrons, sodium readily gives it valence electron to chlorine to achieve an octet configuration.
As chlorine receives this, it has 8 valence electrons too. The bonding formed here is known as ionic bonding.
How is a covalent bond formed?A covalent bond is formed mostly between nonmetals.
For instance, a covalent bond is formed between the sharing of electrons between carbon and oxygen to give carbon dioxide.
Characteristics of ionic compounds.Most ionic compounds formed as a result of ionic bonding as characteristized by the following properties:
When dissolved in water, ionic compounds conduct electricity.Ionic compounds are also used as insulatorsIonic compounds have high melting and boiling point.Therefore, a metal and nonmetal which forms or equals to ionic bond is sodium and chlorine respectively.
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What is the sum of squares for the group that didn't get treatment? report your answer to two decimal places (e.g. 39.87)
Sum of squares for the group that didn't get treatment is 228.333. Reporting the answer to two decimal is 228.33.
What is a decimal?A decimal is a number that consists of a whole and fractional part. Decimal numbers lie between the integers and represent the numerical value for quantities that are whole plus some part of a whole.
We get the decimals when we break a whole into smaller parts. A decimal number then has the two components: a whole number part and fractional part. The decimal place value system for whole part of a decimal number is the same as the whole number value system. However, we get fractional part of the decimal number as we move toward the right after the decimal point.
Decimals are a set of numbers lying between the integers on a number line. They are just the another way to represent fractions in mathematics. With the help of the decimals, we can write more precise values of measurable quantities like length, weight, distance, money, etc.
The numbers to the left of decimal point are the integers or whole numbers and the numbers to the right of the decimal point are decimal fractions. If we go right from the ones place, the next place will be (1/10) times smaller, which will be (1/10)th or tenth place value.
Sum of squares for the non-treated group = 13700 seconds
=[tex]\frac{13700}{60}[/tex]
= 228.333 minutes
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The complete question is:
"Assume you are interested in evaluating the effectiveness of a training program designed to decrease the time required to complete a skilled motor task. Seventeen subjects are randomly assigned to one condition or another: Ten subjects are randomly assigned to receive the training program. A second group of 7 subjects receives no training. All subjects then perform the motor task. Test whether training had any effect on the time (in seconds) required to complete the task using a two-tailed t-test (α = .05). Descriptive statistics for the time required to complete the task (in seconds) are presented below for each group.
Trained group Non trained group
X [tex]X^{2}[/tex] X [tex]X^{2}[/tex]
33 1089 50 2500
41 1681 46 2116
38 1444 47 2116
26 676 48 2209
28 784 37 1369
34 1156 39 1521
32 1024 41 1681
30 900
31 961
37 1369"
complete the electron‑pushing mechanism for the given base‑promoted hydrolysis of an amide. add atoms, bonds, nonbonding electron pairs (lone pairs), charges, and curved arrows where indicated
When a base is present, the addition of water to an aldehyde causes the following reaction:
The hydroxide ion functions as a nucleophile in the first phase of the mechanism by being able to donate a single pair of electrons to the carbon atom of the carbonyl bond. Upon addition, an alkoxide is created. Water then protonates the alkoxide, regenerating a hydroxide ion and a primary gem-diol. When two neighboring alkyl groups are linked to a carbon atom, the result is a secondary gem-diol. This would result from the substrate molecule was ketone. When an alcohol and an aldehyde combine to generate a new compound, a hemiacetal is created. This compound has a carbon atom attached to both an ether and hydroxyl group. A carbon atom that is joined to two ether groups and comes from an aldehyde-reacting species is known as an acetal group.
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what are the safety precautions when being in the science room (200 words essay or long paragraph)
Answer:
Know locations of laboratory safety showers, eyewashstations, and fire extinguishers. ...
Know emergency exit routes.
Avoid skin and eye contact with all chemicals.
Minimize all chemical exposures.
No horseplay will be tolerated.
Assume that all chemicals of unknown toxicity are highly toxic.
More items...
Explanation:
Solve each problem. Give your answers to the correct number of significant figures.
a. 8.3 m x 2.22 m
b. 8432 m divide 12.5
c. 35.2 seconds x (1 minute/60 seconds)
a. 18 [tex]m^2[/tex]
b. 674 m
c. 4220 [tex]seconds^2[/tex]
Significant figures operation
When performing division or multiplication operations, the significant figure of the final answer is determined by the participating number with the lowest significant figure.
If the operation is subtraction or addition, the significant figures after the decimal of the final answer should be the same as that of a participating number with the least significant figure.
Thus;
8.3 m x 2.22 m = 18 [tex]m^2[/tex] (the least has 2 significant figures)
8432 m divide 12.5 = 674 m (the least has 3 significant figures)
35.2 seconds x 120 seconds = 4220 [tex]seconds^2[/tex] (the least has 3 significant figures)
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If a material has a tensile modulus of elasticity of 114 gpa and a poisson's ratio of 0.33, what is its modulus of elasticity in shear? (20 points)
The tensile modulus of elasticity. The Poisson's ratio of material,. Let. The modulus of elasticity in shear.
What is Poisson's ratio?Poisson's ratio is a unit of measurement used in solid mechanics and materials science to describe the Poisson effect, which is the deformation (expansion or contraction) of a material in directions opposite the specific direction of loading. The transverse strain to axial strain ratio's value is the opposite of that. is the ratio of transverse elongation to axial compression for minor values of these changes.
The values of Poisson's ratio for the majority of materials fall between 0.0 and 0.5. Poisson's ratio is close to 0.5 for soft materials like rubber because their bulk modulus is significantly larger than their shear modulus. Because open-cell polymer foam cells frequently collapse under compression, Poisson's ratio for these materials is close to zero.
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What is this element called
Answer:
Hydrogen
Explanation:
The atom only has one proton and one electron making it the first element in the periodic table.