Answer: An ionic bond.
Explanation:An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Ionic bonds form only between metals and nonmetals
atmospheric pressure at the summit of mount everest is about one third the pressure at sea level, which is 760 mm hg. what is the partial pressure of oxygen (po2) at the summit of mount everest if oxygen makes up 21% of the atmosphere by volume at both locations?
The total pressure on Everest would be 34 kPa (or one-third of 102 kPa), and the partial pressure of oxygen would be 34 0.208 = 7.07 kPa.
Atmospheric pressure is the amount of force a given atmospheric column exerts relative to its size. At Mount Everest's summit (8848 m above sea level), the atmospheric pressure is 253 mmHg. The risk to a climber's life at high altitudes may come from the altitude itself. Since atmospheric pressure decreases with altitude, it is 33% lower at the summit of Everest than it is at sea level. Air pressure increases as air density decreases and air thickness increases. The density of air is influenced by a variety of factors. Most significantly, air becomes less dense as altitude rises, lowering atmospheric pressure.
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Predict the product, write the balanced chemical reaction, including states of matter, for each set of starting materials lithium sulfide
A synthesis reaction is a reaction in which two compounds come together to form one. In this case, if the product is lithium sulfide, the reactants will be lithium and sulfur. Lithium in its natural form is solid, and sulfur also has a solid-state. Lithium sulfide is also a solid compound. The synthesis reaction will be:
[tex]Li_{(s)}+S_{(s)}\rightarrow Li_2S_{(s)}[/tex]Now, we have to balance the equation. We have two atoms of Li on the products side and 1 atom of Li on the reactants side. So, we put the coefficient 2 in Li molecules.
[tex]2Li_{(s)}+S_{(s)}\rightarrow Li_2S_{(s)}[/tex]Now, we have the balanced equation of the synthesis reaction of Lithium Sulfide
10. Electrical energy is caused by ______
electric ions.
Answer:
Electrical energy is caused by moving
electric ions.
Explanation:
The faster the charges move, the more electrical energy they carry. As the charges that cause the energy are moving, electrical energy is a form of kinetic energy.
the volume of a balloon filled with he at 755 mmhg is expanded from 2.20 l to 3.86 l at a constant temperature. what is the final pressure (in atm) of the the balloon?
The final pressure of the balloon that was initially filled with a volume of 2.20L to 3.86L is 430.3mmHg.
How to calculate pressure?The pressure of a gas can be calculated using the Boyle's law equation as follows:
P₁V₁ = P₂V₂
Where;
P₁ = initial pressureV₁ = initial volumeP₂ = final pressureV₂ = final volumeAccording to this question, the volume of a balloon filled with He at 755 mmHg is expanded from 2.20L to 3.86L at a constant temperature. The final pressure can be calculated as follows:
755 × 2.2 = P₂ × 3.86
1661 = 3.86P₂
P₂ = 430.3mmHg
Therefore, the final pressure of the balloon that was initially filled with a volume of 2.20L to 3.86L is 430.3mmHg.
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i really need the ansewer so whats the answer?
Energy was lost by substance A to the environment is the statement which best supports the data in the table and is denoted as option D.
What is Energy transfer?This is referred to as the processes which is characterized by the movement of energy from one system to another an an example is heat energy transfer which have different techniques such as conduction, convection etc.
Temperature on the other hand is the measure of the degree of hotness or coldness of a substance and is influenced by heat energy.
From the graph, we can deduce that substance has a temperature which was decreasing with time while substance B has a temperature which was constant throughout.
This therefore means that Energy was lost by substance A to the environment hence ,the reason why option D was chosen as the correct choice.
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what type of hydrogen atoms (primary, secondary, tertiary aliphatic. primary, secondary, tertiary benzylic. aromatic) are found in the following compounds: a) tert-butyl benzene b) cyclohexane c) ethylbenzene d) toluene e) isopropyl benzene
Answer: Benzylic hydrogen refer to the hydrogen atoms attached to the carbon atom just next to the benzene group. In ethyl benzene carbon next to benzene has two hydrogen atoms only.
Explanation: For example, among the inorganic compounds, oxides contain O 2− ions or oxygen atoms, hydrides contain H − ions or hydrogen atoms, sulfides contain S 2− ions, and so forth.
If mercury (ii) oxide is heated and decomposes, what would the product of the reaction be? 4hgo → 4 2o2
If mercury (ii) oxide is heated and decomposes, the product of the reaction be 4 Hg.
Mercury is a chemical element with the atomic number 80 and the symbol Hg. Formerly known as hydrargyrum and also known as quicksilver, In order to fragment anything into smaller pieces or to break it into smaller pieces, mercury is used in thermometers, barometers, manometers, sphygmomanometers, float valves, mercury switches, mercury relays, fluorescent lights, and other devices: Methane and carbon dioxide are produced when microbes break down organic waste. staying fresh while decomposes The process of recycling nutrients that an organism (plant or animal) has utilized to develop its body begins with decomposes. It is the process by which the decomposing dead tissues transform into more basic organic forms. For a large number of the species at the base of ecosystems, these serve as a food supply.
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What is the boiling point of a solution of 0.250g of glycerol, C3H8O3, in 40g of H2O? Glycerol is a molecular compound, i = 1
Explanation
Given:
mass of glycol = 0.250g
mass of solvent (water) = 40g = 0.04 Kg
i = 1
Required: The boiling point of the solution
Solution
[tex]\Delta T\text{ = Kbm}[/tex]where Kb is the boiling point elevation constant
m is the molal concentration (molality) of all species
Step 1: Find the moles of glycerol
n = m/M
n = 0.250g/92,09382 g/mol
n = 2.71x10^-3 mol
Step 2: Find the molality
molality (m) = moles of solute/Kg of solvent
molality = 2.71x10^-3/0.04Kg
molality = 0.068 m
Step 3: Find the change in temperature
[tex]\Delta T\text{ = Kbm}[/tex]Kb of water = 0.512 cm^-1
DT = 0.512 x 0.068
DT = 0.035 'C
Step 4: Find the boiling point
Boiling point of water = 100 'C
DT = 0.035 'C
New boiling point =100 + 0.035 = 100.035 'C
Answer
100.035 'C
Is the exoplanet like earth in terms of its distance from its star? Explain your answer
The distance between the earth and star = 8 ✕ (9.46 ✕ 1012) = 7.6 ✕ 1013 km.
What is exoplanet?
Every planet in our solar system orbits the Sun. Planets known as exoplanets orbit other stars. It is quite challenging to directly observe exoplanets with telescopes. They are hidden by the bright light from the stars they orbit.
It is challenging to give distances in kilometers for many celestial objects since they are so far away from the earth, such as galaxies or stars.
How far light may travel in a year is measured in large units called light-years. The vast distances are therefore expressed in terms of light-years.
9.46 x 1012 kilometres make up a light year.
In other words, if a star is eight light-years away, light would travel that distance in eight years. This is how the distance between a star and the earth is calculated.
Therefore, the distance between the earth and the star is 8 (9.46 1012) = 7.6 1013 kilometers.
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Using the periodic table, predict whether the following chlorides are ionic or covalent: SiCl4, PCl3, CaCl2, CsCl, CuCl2, and CrCl3.
The following chlorides are ionic or covalent:
SiCl₄ = covalent
PCl₃ = covalent
CaCl₂ = ionic
CsCl = ionic
CuCl₂ = ionic
CrCl₃ = ionic
SiCl₄ is silicon tetrachloride. SiCl₄ is a covalent. The bond between silicon and chlorine is formed by the sharing of electrons.
PCl₃ is Phosphorous trichloride . PCl₃ is covalent. Phosphorus contain 5 electrons in valence shell and requires 3 more to complete octet and chlorine require one electron to complete octet so, the bond formed is by sharing of electron.
CaCl₂ is calcium chloride. CaCl₂ is an ionic. calcium is metal and metal donates electron to chlorine is non metal and non metal accept electrons and become Ca²⁺ and Cl⁻. The bond formed by the transfer of electrons.
CsCl is cesium chloride. CsCl is an ionic. symbol of ions : Cs⁺ and Cl⁻
CuCl₂ is copper(II) chloride. CuCl₂ is ionic formed by the transfer of electrons. symbol of ions : Cu²⁺ and Cl⁻
CrCl₃ is chromium(III) chloride. CrCl₃ is an ionic. symbol of ions : Cr³⁺ and Cl⁻.
Thus, The following chlorides are ionic or covalent:
SiCl₄ = covalent
PCl₃ = covalent
CaCl₂ = ionic
CsCl = ionic
CuCl₂ = ionic
CrCl₃ = ionic
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the average distance from Earth to thr moon is 384,000 kilometers. How long does it take for light to the go from Earth to the moon?
for one second you travel 300,000 kilometers.
Answer:
Explanation:
About 1.3 seconds
It takes light about 1.3 seconds to travel from the moon to the Earth at a distance of 384000 km. This is because the speed of light is about 300000 km/s. So, it takes light about 1.3 seconds to travel from the moon to the Earth.
8) There is only one naturally occurring isotope of beryllium, Be-9. Explain why the atomic
mass of this isotope is the same value as the "average atomic mass" for beryllium found
on the periodic table.
Answer:
The average atomic mass for an element is calculated by summing the masses of the element's isotopes, each multiplied by its natural abundance on Earth. Since beryllium has only one naturally occurring isotope. The average atomic mass of beryllium is the mass of Be-9 isotope multiplied by 100%.
Explanation:
WHAT IS A HYDRATE? please provide a detailed scientific answer
A Hydrate is a compound containing H2O molecules. The best-known hydrates are crystalline solids that lose their fundamental structure from the removal of bound water. Some examples of hydrate are Glauber's Salt ( sodium sulfate decahydrate, Na2.SO4.10H2O), Washing soda ( sodium carbonate decahydrate, Na2CO3∙10H2O), and the double salts known as alums.
In many cases, hydrates are coordination compounds CuSO4∙5H2O is actually [Cu(H2O)4]SO4∙4H2O where four molecules of water of hydration are coordinated to copper ion. Similarly, MgSO4.7H2O is actually [Mg(H2O)6]SO4∙4H2O.
Noble gases and hydrocarbon gases form crystalline hydrates called clathrate compounds which are relatively at low temperatures and pressure.
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as a result of the sigmoidal shape of the o2-hb dissociation curve, there is very little change in hb saturation across a range of po2 values when po2 is high (e.g. between 80 and 100 mm hg in the text book figures). according to the reading, what is an advantage of the relatively flat shape of the curve here?
Red blood cells contain hemoglobin. When carbonic acid, which is found in tissues, is present, hemoglobin releases the bound oxygen. The oxygen that is attached to hemoglobin is released into the blood's plasma and taken up by the tissues in the capillaries, which are also where carbon dioxide is created.
Throughout each of these deep breathing cycles, how do the partial pressures change?If more air is exchanged, the partial pressures of the outside atmosphere will approach but never reach them due to the remaining volume.
Combustible Oxide : The dissociation curve shifts to the left as a result of one CO molecule binding to hemoglobin increasing the affinity of the other binding locations for oxygen.
Lower CO2, greater pH, and lower temperature all move oxygen dissociation to the left.
The pCO2 is significantly influenced by two variables. The person's breathing rate and depth are the first thing to consider. Someone who is hyperventilating will "blow out" more CO2, which will lower pCO2 levels. Holding one's breath causes CO2 to be retained, which raises pCO2 levels.
Limited pressures : There are two reasons why the alveolar oxygen partial pressure is lower than the ambient O2 partial pressure. First, the upper airway humidifies the air as it reaches the lungs, lowering the partial pressure of oxygen to around 150 mmHg while increasing the partial pressure of water vapour (47 mmHg).
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a student conducts an experiment and finds that a sample of the solid substance he is testing conducts electricity. the student concludes that the material must be an covalent compound. what is wrong with this conclusion?
This conclusion is wrong; because the covalent molecules do not conduct electricity.
Which are covalent molecules?A covalent bond is created when one or more pairs of electrons are exchanged between two atoms. The two atomic nuclei are drawing these electrons in unison. A covalent bond is created when there is not enough room between the electronegativities of two atoms for an electron transfer to occur and produce ions.
The atoms associate in a covalent bond by exchanging electrons. Typically, nonmetals form covalent connections with one another. For instance, each hydrogen (H) and oxygen (O) share two electrons to form the molecule of two hydrogen atoms singly linked to one oxygen atom that is known as water (H₂O).
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help me out please and thank you
What occurs when copper sulfate solution is combined with a piece of silver metal?
If the reaction happens, you should also write the chemical equation in balance.
Reactions to displacement as a first option
A more reactive metal can displace a less reactive metal from a solution in a displacement reaction. The reactivity series of metals can be used to forecast the end products of a displacement process. The metals are arranged according to their reactivity with diluted acids in the reactivity series. A specific metal in the reactivity series may be displaced by metals positioned above it.
In the reactivity series, some of the elements above hydrogen (H) are potassium (K), sodium (Na), magnesium (Mg), zinc (Zn), and others. Several of the metals in the reactivity sequence below hydrogen
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True or False: In cellular respiration, carbon dioxide and water are the reactants, and fuel and oxygen are the products.
In cellular respiration, carbon dioxide and water are the reactants, and fuel and oxygen are the products, this statement is false.
As in the cellular respiration, the fuel which is glucose and oxygen are the reactants, these react to form ATP, while the carbon dioxide and water are the products formed.
The equation of the reaction of cellular respiration is written as -
C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O + 25 ATP
glucose + water → carbon dioxide + water + ATP
Carbon dioxide and water are considered as byproducts or waste products. Aerobic respiration uses up the glucose and oxygen which releases the energy or results in the ATP formation.
Therefore, the statement given is false.
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The mass of an atom of chlorine-37 is _______ than the mass of an atom of chlorine-35
The mass of an atom of chlorine 37 is heavier than the mass of an atom of chlorine 35.
Mass number of atomsThe mass number of atoms is the sum of the protons and neutrons in the nuclei of atoms.
Mathematically:
Mass number = number of protons + number of neutrons
The protons are the positively charged particles located in the nuclei of atoms while the neutrons are neutrally charged particles found in the nuclei of atoms as well.
Both proton and neutron numbers determine how heavy an atom would be. Electrons of atoms are usually located outside the nuclei and contribute a negligible amount to the weight of atoms.
Thus, a chlorine atom with an atomic mass of 37 is heavier than a chlorine atom with a mass of 35.
Although both atoms are from the same elements, they are called isotopes. Isotopes of the same element have the same proton number but different mass numbers.
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What number helps us identify the element?
Answer:
The Atomic Number
Explanation:
The atomic number is the number of protons of an atom in its nucleus.
Each element has a unique atomic number.
(view screenshot too, to find where it is in element table)
the amount of iron in an iron ore can be quantitatively determined by titrating a solution of the unknown with a standard solution of dichromate. the net ionic equation is: redox titration.gif the titration of 25.0 ml of an iron(ii) solution required 18.0 ml of a 0.150 m solution of dichromate (cr2o72-) to reach the equivalence point. what is the molarity of the iron(ii) solution?
According to the given statement The molarity of the iron(II) solution is 0.648 M.
What is molarity?The amount of the sample in a specific solution volume is defined as its molarity (M). The molarity of a solute per litre of a solution is known as molarity. The molar concentration is yet another name for molarity.
Briefing:Iron(II) solution volume (V₁) = 25.0 mL/0.025 L
Dichromate solution (V₂) has a volume of 18.0 mL, or 0.018 L.
Dichromate solution molarity (M₂) = 0.150 M
Molarity of dichromate solution is :
M₂ = n₂/V₂
(n₂ = M₂* V₂ = 0.150 * 0.018 = 2.7 * 10⁻³ mol
Complete balanced equation is given below.
[tex]6 \mathrm{Fe}^{2+}(a q)+\mathrm{Cr}_2 \mathrm{O}_7^{2-}(a q)+14 \mathrm{H}^{+}(a q) \rightarrow 6 \mathrm{Fe}^{3+}(a q)+2 \mathrm{Cr}^{3+}(a q)+7 \mathrm{H}_2 \mathrm{O}[/tex]
It is obvious from the equation that 1 mole of dichromate is needed to make 6 moles of iron(II) solution.
Therefore, we calculate the number of moles of iron(II) solution using the unitary technique.
1 mole of dichromate is equal to 6 moles of iron (II)
6n₂ moles of iron are equal to n₂ moles of dichromate (II)
=6 * 2.7 * 10⁻³ = 0.0162 mol Fe²⁺
So, 0.0162 moles of iron(II) is needed. Therefore,
Now, molarity of iron(II) solution is given as: n[tex]_1[/tex] = 0.0162
Molarity = Moles ÷ Volume
M₁ = n[tex]_1[/tex]/V₁
M₁ = 0.0162mol/0.025 L = 0.648 M
The molarity of the iron(II) solution is 0.648 M.
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The complete question is -
The titration of 25.0 mL of an iron(II) solution required 18.0 mL of a 0.150M solution of dichromate to reach the equivalence point. What is the molarity of the iron(II) solution?
suppose you perform a titration of a monoprotic weak acid and you determine the ph at the equivalence point is 9.21 and the ph at the half-equivalence point is 4.24. what is the pka of the acid? enter your answer numerically.
The pKa of the weak acid, based on the titration results, is 4.24.
Only the half-equivalence pH is needed to answer this.
At the half-equivalence point of the titration, half of the monoprotic acid HA has been neutralized and converted to the appropriate salt. That means that the concentration of the acid [HA] is equal to the concentration of its anion [A⁻]. Now, we can consult the Henderson-Hasselbalch equation:
[tex]pH = pKa + log\frac{[A^{-} ]}{[HA]}[/tex]
Because [A⁻] = [HA], that means that:
[A⁻]/[HA] = 1
log(1) = 0
pH = pKa
So, at the half-equivalence point in the titration of the weak acid the pH value of the solution is equal to the pKa value of the weak acid, so pKa = 4.24
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A piece of copper with a volume of 100cm3 has a mass of 890g. Explain how you could use this information to find out how much mass would be in 13cm3 of copper.
The mass of the 13 cm³ of copper, given that 100 cm³ of it has a mass of 890 g is 115.7 g
How to determine mass of the copperWe'll begin by obtainig the density of the copper. This can be obtained as illustrated below:
Volume of copper = 100 cm³Mass of copper = 890 gDensity of copper =?Density = mass / volume
Density of copper = 890 / 100
Density of copper = 8.9 g/cm³
Finally, we shall determine the mass of the 13 cm³ of copper. This is obatined as follow:
Volume of copper = 13 cm³Density of copper = 8.9 g/cm³Mass of copper = ?Density = mass / volume
Cross multiply
Mass = Density × volume
Mass of copper = 8.9 × 13
Mass of copper = 115.7 g
Thus, the mass of the copper is 115.7 g
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The mass of 13 cm³ of copper with a volume of 100 cm³ has a mass of 890 g is 115.7 grams.
What is mass?Mass is defined as a dimensionless number used to describe the mass of a particle or item.
We'll start by finding out how dense copper is.
Given, Volume = 100 cm³
Mass = 890 g
Density = Mass / Volume
= 890 g / 100 cm³
= 8.9 g/cm³
Now to determine mass is 13 cm³ of copper is
Density = Mass / Volume
So, Mass = Density x Volume
= 8.9 g/cm³ x 13 cm³
= 115.7 grams
Thus, the mass of 13 cm³ of copper with a volume of 100 cm³ has a mass of 890 g is 115.7 grams.
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The percent composition of an unknown substance is 75.42 % Carbon, 6.63 % Hydrogen, 8.38 % Nitrogen, and 9.57 % Oxygen. If its molar mass is 334.0 g/mol what is its molecular formula?
The percent composition are the percent in mass of each atom in the molecule.
Since we know that the molar mass of the substance is 334.0 g/mol, we can use it to figure out how much of each atom we have per molecule.
Starting from carbon, we know it is 75.42% of the mass.
In 1 mol of the substance, there are 334.0 g, 75.42% of which is from carbon atoms.
So, in 1 mol of the substance, there are the following mass of carbon:
[tex]m_C=334.0g\cdot75.42\%=334.0g\cdot0.7542=251.9028g[/tex]The aromic mass of the carbon atom is 12.0107 g/mol.
That is, in 1 mol of the substance -> 251.9028 g of C.
That mass of carbon is equivalent to:
[tex]\begin{gathered} M_C=\frac{m_C}{n_C} \\ n_C=\frac{m_C}{M_C}=\frac{251.9028g}{12.0107g/mol}=20.97\ldots mol\approx21mol \end{gathered}[/tex]So, in 1 mol of the substance -> 251.9028 g of C -> 21 mol of C. This means that for each molecule of the substance we have 21 atoms of carbon.
Now, we can just repeat the process for Hydrogen, Nitrogen and Oxygen.
Hydrogen has an atomic mass of 1.00794 g/mol, and the percent composition of it is 6.63%, so:
[tex]m_H=334.0g\cdot0.0663=22.1442g[/tex][tex]n_H=\frac{m_H}{M_H}=\frac{22.1442g}{1.00794g/mol}=21.96\ldots mol\approx22mol[/tex]So, for each molecule of the substance there are 22 atoms of hydrogen.
Nitrogen has an atomic mass of 14.0067 g/mol, and the percent composition of it is 8.38%, so:
[tex]m_N=334.0g\cdot0.0838=27.9892g[/tex][tex]n_N=\frac{m_N}{M_N}=\frac{27.9892g}{14.0069g/mol}=1.998\ldots mol\approx2mol[/tex]So, for each molecule of the substance there are 2 atoms of nitrogen.
Oxygen has an atomic mass of 15.9994 g/mol, and the percent composition of it is 9.57%, so:
[tex]\begin{gathered} m_O=334.0g\cdot0.0957=31.9638g \\ n_O=\frac{m_O}{M_O}=\frac{31.9638g}{15.9994g/mol}=1.997\ldots mol\approx2mol \end{gathered}[/tex]So, for each molecule of the substance there are 2 atoms of oxygen.
To summarize, we have, for each molecule of the substance:
- 21 carbon
- 22 hydrogen
- 2 nitrogen
- 2 oxygen
So, the molecular form of the substance is C₂₁H₂₂N₂O₂.
Balance the chemical equation below using the smallest possible whole number stoichiometric coefficients.
The balanced chemical reaction equation is obtained as [tex]Fe(s) + 2O_{2} (g) + H_{2} O ---- > 2Fe(OH)_{2} (aq)[/tex]
What is a chemical reaction equation?The term chemical reaction equation refers to the way that we represent the combination of the reactants that leads to the formation of the products ins given chemicals reaction process. We know that the stoichiometry of the reaction is very important as it does show us how the reactants and the products can be combined for the particular reaction that we are considering.
We now have the reaction that is occurring between the metallic iron and oxygen and water. This is the reaction that occurs when there is rusting that is occurring on a given or particular piece of iron as we have it here.
We shall now attempt to look at the equation so that the equation that has been shown in the question can be appropriately balanced according to the rules.
Thus, we could write the balanced chemical reaction equation as; [tex]Fe(s) + 2O_{2} (g) + H_{2} O ---- > 2Fe(OH)_{2} (aq)[/tex]
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An important formula from chemistry is PV = nRT. Solve the formula for R.
The value of R from the ideal gas equation is 0.082 atm.L/K/mol.
What is the ideal gas equation?The ideal gas equation is the equation that shows the relationship between pressure, and volume. moles of a gas and the temperature of a gas under ideal conditions.
The ideal gas equation is given below as follows:
PV = nRT
At standard temperature and pressure, the values of the variables are given below;
Pressure, P = 1 atm
Volume, V = 22.4 Liters
Number of moles, n = 1 mole
Temperature, T = 273.15 K
R = PV/nT
R = 1 * 22.4 / (273.15 * 1)
R = 0.082 atm.L/K/mol
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The patient has a bone density of 1200mg/cm^3 what is the mass of 39.5cm^3 sample
Answer:
47,400 mgExplanation:
The mass of the bone sample can be found by using the formula
mass = density × volume
From the question
density = 1200mg/cm^3
volume = 39.5cm^3
We have....
mass = 1200 × 39.5 = 47400
We have the final answer as
47,400 mgHope this helps you
Pretest: Unit 1
Question 3 of 42
Which of the following is an example of engineering, not science?
Which of the following is an example of engineering, not science?
OA. Predicting the precipitate formed during a chemical reaction
OB. Adding lime to adjust the acidity of a lake
OC. Developing a machine to control the rate of a reaction
OD. Determining the relative reactivity of two metals
SUBMIT OA. Predicting the precipitate formed during a chemical reaction
OB. Adding lime to adjust the acidity of a lake
OC. Developing a machine to control the rate of a reaction
OD. Determining the relative reactivity of two metals
SUBMIT
Correct option is OC- Developing a machine to control the rate of a reaction according to engineering
What is engineering?
Engineering is a field that has been performed for thousands of years, but STEM education, which attempts to engage students with science, technology, engineering, and mathematics, includes it as a component.
The Parthenon, Stonehenge, and the Pyramids of Giza, among other places, are instances of engineering. However, modern engineers work in a variety of fields in addition to erecting structures.
Engineers work on a variety of things, including as cell membranes, building materials, prosthetics, increasing the efficiency of engines and vehicles, and creating renewable energy sources.
Correct option is OC- Developing a machine to control the rate of a reaction according to engineering
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What are water turbines used for?
Answer:
A water turbine is used to convert the energy contained in water, potential energy or kinetic energy, into mechanical or electrical energy. There are two types of water turbines, the reaction water turbine, and the impulse water turbine.
Explanation:
Answer:
Water turbines are used to take energy whether it may be kinetic or potential from the water and convert that energy into mechanical, or electrical energy.
Explanation:
Diagram of Down's cell
the diagram of downs cell
which statements correctly describe a polar covalent bond? i. electrons are shared but not equally by the two atoms. ii. one atom has a small negative charge, and the other atom has a small positive charge. iii. the bond dipole is zero. iv. one or more electrons are transferred from one atom to a second atom.
A covalent bond bond is appropriately described as occurring when one or even more electrons move of one atom to another.
what is covalent polar bond?a bond in which the two bound atoms' electron densities are unequally distributed as a result of either a difference in the electronegativity or the effects of induction.
A covalently bonded bond is represented by the water molecule, written as H2O. The oxygen atom is given more time with the electrons than for hydrogen atoms due to the unequal distribution of the electrons.
what is electron?The electron is an unit of matter with a negative zero elementary charge electric charge. Due to their lack of known components, electrons, which are part of the first generation of lepton particles family, are typically regarded to be elementary particles or substructure
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