Answer: Not possible to find average amu with only the information provided.
Explanation:
Is there more information about the other isotopes? I don't see how one could calculate an overall atomic mass with only one isotope is known. An isotope of 186.956 with abundance of 62.6% isn't enough information. We're not told anything about the other isotopes: are they larger, smaller, and at what percentage. If one has an amu of 204.956 at 37.4%, the overall atomic mass would be quite different than if it had an atomic mass of 182.956 at 37.4%. More infornmation is required.
A student in lab is determining the density of beads of an unknown metal using displacement by volume. The beads are added to an empty beaker (82.0 g) and with the metal beads it weighs 205.5 g. The beads are poured out into a graduated cylinder containing 60.9 mL of water and the water rises to 70.8 mL mark. What is the density of the metal beads in g/mL?
a. 0.34
b. 0.08
c. 12.47
d. 2.90
e. 1.74
The density of the metal beads is 12.47 g/mL (option c).
1. Determine the mass of the metal beads:
Mass of beaker + metal beads = 205.5 g
Mass of empty beaker = 82.0 g
Mass of metal beads = (Mass of beaker + metal beads) - (Mass of empty beaker)
= 205.5 g - 82.0 g
= 123.5 g
2. Determine the volume of water displaced by the metal beads:
Initial volume of water in the graduated cylinder = 60.9 mL
Final volume of water in the graduated cylinder = 70.8 mL
Volume of water displaced = Final volume - Initial volume
= 70.8 mL - 60.9 mL
= 9.9 mL
3. Calculate the density of the metal beads:
Density = Mass / Volume
Density = 123.5 g / 9.9 mL
Density = 12.47 g/mL
Therefore, the density of the metal beads is 12.47 g/mL (option c).
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In what ways are the electronic structures of the group 14 (4A) elements similar? In what ways are they different?
Elements in the same group have the same number of outermost electrons.
What is electronic structure?Electronic structure refers to the arrangement of electrons in the atom. We know that elements in the same group have the same number of outermost electrons.
However, as we come down the group, the inner shells of the elements in group 14 become bigger and the outermost shells are now found at higher energy levels such as n=4 or 5.
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what two functional groups are found in monosaccharides
ENT
Which of the following is one of Mendel's laws?
Law of Independent Assortment
ouTube
Law of DNA contains genes
Law of Segregation of Genes
Answer:
law of independent assortment
a car is parked along a level road identify the forces that act upon the car
Answer: Gravity i think
How did gravity and density affect the order in which these spheres ended up on earth
Answer:
The atmosphere and Earth's interior are layered by density. The differentiation between these layers is due to processes that took place during the early stages of Earth's formation (ca. 4.5 billion years ago). At this time, melting would have caused denser substances to sink toward the center while less-dense materials would have migrated to the crust.
Gravity pulls more strongly on denser materials so denser materials are at the center of things.
Explanation:
Gravity pulls more strongly on denser materials so denser materials are at the center of things. The lowest layer of the atmosphere is denser than the upper layer. Earth's liquid metal core has convection, which generates the magnetic field.
Denser materials are in the centre of the universe because they are more powerfully pulled toward the centre by gravity.
What is gravity?The force that pulls items toward the centre of a planet or other entity is called gravity. All of the planets are kept in orbit around the sun by gravity.
Gravity applies to anything that has mass. Gravity is stronger for objects with higher mass. Along with distance, gravity weakens as well. Therefore, the gravitational force of two things becomes stronger the closer they are to one another.
The mass of the Earth is what creates gravity. The total gravitational force of all of its mass acts on the weight in your body. What gives you weight is that. Additionally, you would weigh less than you do now if you were on a planet with a lower mass than Earth.
Gravity applies to anything that has mass. Gravity is stronger for objects with higher mass. Along with distance, gravity weakens as well. Therefore, the gravitational force of two things becomes stronger the closer they are to one another.
Therefore, denser materials are closer to the centre of the universe because gravity is more drawn to them.
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la masa molecular de la cafeina es de 194,19g ¿cual es la formula molecular de la cafeina ?
Answer:
the formula for the molecular caffeine is C8H10N4O2
Explanation:
percent to mass, mass to mole, divide by small multiply till whole
Bromine, a liquid at room temperature, has a boiling point of 58°C and a melting point of -7.2°C. Bromine can be
classified as a
Answer:
Selenium
adadadadad
Explanation:
if u ask which group
so it is halogen
or u ask which type of matter
then liquid
why should you never place a hot object on the pan of a balance
Answer:
Because, it would make the pan hot and if it's plastic then it would melt. if it was metal it might make the metal piece hot and you'd risk burning yourself.
Explanation:
You should never place a hot object on the pan of a balance because it can cause the balance to become inaccurate and affect the measurement results.
Balances are precision instruments used to measure the mass of objects with high accuracy. The balance pan and its components are designed to operate under specific conditions, including a stable temperature. When you place a hot object on the balance pan, several issues can arise:
Thermal Expansion: Materials, including metals and plastics, can expand when exposed to heat. Placing a hot object on the pan can cause the pan and its supporting components to expand, potentially affecting the balance's calibration and accuracy.
Uneven Heating: If the hot object is not uniformly heated, it can cause uneven expansion of the balance pan. This can lead to imbalanced weight distribution and inaccurate measurements.
Calibration Shift: The heat from the hot object can cause the materials in the balance to change temperature rapidly, potentially affecting the calibration of the instrument. The balance may require time to stabilize before accurate measurements can be obtained.
Damage to the Balance: Exposing the balance pan to extreme heat can cause warping, cracking, or other structural damage to the pan material. This can permanently impair the balance's performance and accuracy.
To ensure accurate measurements and maintain the integrity of the balance, it's important to allow hot objects to cool to room temperature before placing them on the balance pan. Additionally, using appropriate containers or holders designed for high-temperature applications can help prevent damage to both the hot object and the balance equipment.
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sulphur (iv)oxide reacts with hydrochloric acid solution .give reasons
Answer:
Hydrogen chloride - diluted solution. Sulfur dioxide ( SO 2) reacts with chlorine gas (Cl 2) in the presence of moisture to give HCl and H 2 SO 4. ... H 2 SO 4 and HCl are strong acids in aqueous solutions. If more HCl is added to the solution, then carbon dioxide gas, sodium chloride and water are produced.
How many significant figures in 100000 g?
Answer:
1
Explanation:
Any digit that is not 0 is always significant
Which diagram or diagrams represent a compound?
Answer:
x and z cuz compound are group of molecules or atoms
when a solution is diluted, what happens to the number of moles of solute in the diluted solution.
Answer: The amount does not change.
Explanation:
5 Facts about Geology
Differentiate liquid crystals from pure liquids and crystalline solids.
(Answer this question correctly and I will give the first correct answer brainliest)
Answer:
the difference between pure liquids and crystallines solids is pure liquids have optically active molecules forming twisted shapes whereas solids do not
Explanation:
a major cause of rancidity of lipids in foods is exposure to
Answer:
exposure to the sun (heat and light) for long period of time and air (oxygen reacts with particles)
What is the formula for Iron (3) Oxide?
Answer:
IT should be Fe2O3
Explanation:
Fe2O3
Answer:
Iron (III) Oxide = Fe2O3
what is the change in atomic mass when an atom emits a beta particle
Answer:
A neutron in the nucleus converts to a proton and a beta particle. The nucleus ejects the beta particle and some gamma radiation. The new atom retains the same mass number, but the number of protons increases to 44.
Explanation:
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If the atomic number is bigger then is the nuclear charge also bigger
Answer:
No
Explanation:
When atomic number is increasing its atomic mass increases
Atomic number doesn't affect nuclear charge
when food looks bad this type of food spoilage is usually due to
microbial growth
nitrates
organic acids
sulfides
Answer:
microbial growth
Explanation:
food that is not properly kept at a proper temperature bacteria will grow causing spoilage
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List these drinks in order of kinetic energy, starting with the drink whose particles have the highest kinetic energy.
hot chocolate, water, juice, milk
hot chocolate, juice, milk, water
water, milk, juice, hot chocolate
water, hot chocolate, juice, milk
Water
Milk
Juice
Hot choclate
Answer: The answer is B). Hot Chocolate, Juice, Milk, Water.
Explanation: For the second row, I put the temperature (in °C) in the descending order that looks like this: 50°C, 40°C, 35°C, 15°C.
I hope that my answer is very helpful to your own question about listing these drinks in descending order by starting with the drink whose particles have the highest kinetic energy, please mark me as Brainliest and have a great P.A. Day and weekend! :D
Sincerely,
Jason Ta,
The ambitious of Brainly and the role of The TDSB and WHCI Student of the high school.
Identify the independent and the dependent variables of this statement: Do tomatoes
have a faster growth rate under fluorescent, incandescent, or natural light?
Answer:The dependent variable is the rate of germination and growth. The independent variable is the variety of tomato.
Explanation:i hope this helps you
Which of the following is found in both a cell and a virus?
A) hereditary(genetic) material B) cell membrane C) nucleus D) mitochondria
Answer:
I believe that it is a
Explanation:
I can't comment on you the other question for some reason. Do you have any other means of communication??
Limestral flour (calcium carbonate) is a weak base used for at a few years of intervals Neutralize the acidification that takes place by lakes and woodland. Would not be a good idea that instend Using the stronger base sodium hydroxide and then be able to use a little less amount?
Answer:
Well, no.
Explanation:
NaOH is a base which is found in soap, and other detergents which gives it the slippery feel, because, it is a really strong base. Applying this to lakes and woodland could make the water and woodland really concentrated which could make them harmful for domestic and industrial use
What does the atoms of metals have
Answer:
I dont know
Explanation:
because I dont know
All matter is made up of atoms and molecules that are what?
Fluorine + sodium chloride → sodium fluoride + __________. What is the missing chemical name?
Answer:
Chlorine (Cl)
Explanation:
The equation would be:
[tex]F+NaCl[/tex] → [tex]NaF + Cl[/tex]
This is because no atom is lost in a reaction. Chlorine would be the missing chemical as it is on the other side of the equation and needs to be accounted for on the products side.
The missing chemical in the reaction of sodium chloride with fluorine forming sodium fluoride is chlorine.
What is a chemical equation?The chemical equation is given as the representation of the reactants molecules and the product molecules in a chemical reaction.
The reaction follows the law of conservation and thereby no element will be lost in the reaction. Thus, the chemical reaction for the fluorine and sodium chloride is given as:
Fluorine + Sodium chloride → Sodium fluoride + Chlorine
Thus, the missing chemical in the reaction was chlorine.
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Use the equation to answer the question.
CH4 + _____Cl2 → CCl4 + _____HCl
Which numbers balance this equation?
The whole Balanced Reactions Quick Check for Honors Chemistry A is
1) A. The reactants and products have the same number and type of atoms, but the atoms may be recombined.
2) B. It shows how many molecules there are of a particular substance.
3) D. NaOH + HCl → NaCl + H2O
4) A. Atoms always remain intact during chemical reactions.
5) D. 4, 4
The balanced chemical equation is:
CH₄ + 4Cl₂ —> CCl₄ + 4HCl
The numbers that balanced the equation are: 4, 4
To know the number that balanced the equation, we shall simply balance the equation.
CH₄ + Cl₂ —> CCl₄ + HCl
There are 4 atoms of H on the left side and 1 atom on the right side. It can be balance by writing 4 before HCl as shown below:
CH₄ + Cl₂ —> CCl₄ + 4HCl
There are 2 atoms of Cl on the left side and a total of 8 atoms on the right side. It can be balance by writing 4 before Cl₂ as shown below:
CH₄ + 4Cl₂ —> CCl₄ + 4HCl
Now, the equation is balanced
The numbers that balanced the equation are 4,4
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the molecular formula mass of this compound is 150 amu . what are the subscripts in the actual molecular formula?
Answer:
You need the mass composition of the compound.
This composition works fine for the formula mass 150 amu.
C: 40.0%
H: 6.7%
O: 53.3%
From that, you can solve the problem following theses steps:
1) Convert mass composition fo molar ratios by dividing ech element by its atomic mass =>
C: 40.0 / 12 = 3.33
H: 6.70 / 1 = 6.70
O: 53.3 / 16 = 3.33
2) Divide all the numbers by the smallest one =>
C: 3.33 / 3.33 = 1
H: 6.70 / 3.33 = 2
O: 3.33 / 3.33 = 1
3) Write the empirial formula and calculate its mass:
C H2 O => 1 * 12.0 g/mol + 2 * 1.0 g/mol + 1 * 16.0 g/mol = 30 g/mol
4) Calculate how many times the empirical mass is contained in the molecular mass:
150 / 30 = 5
5) Conclusion:
The molecular formula is C5 H10 O5, i.e. the number of each atom in the molecular formula are:
C =5, H = 10, O = 5
If the net force acting on a stationary object is zero, how will the object’s motion be affected?
Answer:
remain at rest
Explanation: