How many atoms of carbon are in 24 grams of carbon?a) 1.2 x 10²⁴ atoms
b) 1.7 x 10²⁶ atoms
c) 1.2 x 10²⁵ atoms
d) 3.0 x 10²⁴ atoms
e) 3.0 x 10²³ atoms

Can anyone explain this one?

Answers

Answer 1

Answer: (3 grams of carbon) x (1 mole of carbon/12 grams ) =3/12 = 1/4 of a mole of carbon. Then... ( 1/4 of a mole) x (6.02 x 10^23 atoms/mole) = approximately 1.5 x 10^23 atoms.

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If water were a nonpolar molecule, how would its properties be different?
The concentration 12 g/L means there are 12 g of solute present in__________of solution.
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An atomic nucleus must contain at least one neutron or else the force of attraction of the electron(s) will collapse the atom. True/false

Answers

True. If the nucleus had only protons and electrons, they would stick together like a magnet and collapse the atom.

True the neutron is neutral meaning it doesnt do anything but keep the balance in check

If a sample of gas in a rigid container has a temperature of 28.1°C at pressure of 121.2kPa.What will the pressure increase to if heated to a temperature of 89.3°C?

Answers

Answer:

3,495.02‬

Explanation: TRY THAT FOR AN ANSWER

An ionic solid is placed in a beaker of water. Which of the following occurs when there is a strong attraction between the solute and the solvent?A. The solute melts.
B. The solute dissolves.
C. The solute remains intact.
D. The solute reacts to form a precipitate.

Answers

Answer: Option (B) is the correct answer.

Explanation:

An ionic solid is a substance which has ionic bonds, that is, formed by the transfer of electrons.

Ionic bonds have strong force of attraction because ionic solids have opposite charges which strongly attract each other.

When we dissolve ionic solid in a beaker of water, it completely dissociate into its ions because polar molecules or solutes dissolve in polar solvents.

For example, when NaCl is dissociated into ions then the reaction is as follows.

$NaCl \rightarrow Na^(+) + Cl^(-)$

Thus, we can conclude that when an ionic solid is placed in a beaker of water then the solute dissolves in it.

The answer is B. the solute dissolves. The ionic solid has attraction between ions and when there is strong attraction between solute and solvent, the ion will separate and dissolve in water.

What is the % yield if 20 grams of hydrogen is reacted with 32 gramsof oxygen and produces 9 grams of water?
H2 + O2 -> H2O

Answers

If 20 g of hydrogen is reacted with 32 g of oxygen to produce 9 g of water, the percentage yield is 5%.

What is Percent yield?

Percent yield is the ratio of the actual yield times the theoretical yield to 100. When the actual and theoretical yield are equal, the percentage yield is 100%. So if the actual yield is less than the theoretical yield then the percentage yield is less than 100%. This situation may arise due to the incompleteness of the reaction or the loss of the sample during the recovery process.

According to the stoichiometry of reaction of formation of water,

4 g hydrogen gives 36 g water, thus, 20 g hydrogen gives 20×36/4=180 g water which is theoretical yield.

So, the percent yield=observed yield/theoretical yield×100

percent yield=9/180×100=5%.

Thus, if 20 g of hydrogen is reacted with 32 g of oxygen to produce 9 g of water, the percentage yield is 5%.

Learn more about Percent yield, here:

brainly.com/question/22178760

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Answer:

12.5%

Explanation:

32/16 = 2 moles of oxygen

2 x 18.01 x 2/1 = 72.04 g of H2O

9/72.04 x 100 = 12.5%

balanced equation: 2H2 + O2 → 2H2O

limiting reactant is oxygen

Your tongue has about 3,000 taste buds.
True
False

Answers

false , tongue has more than 9000 taste buds .

What is an ionic bond

Answers

Ionic bonding is the complete transfer of valence electron(s) between atoms. It is a type of chemical bond that generates two oppositely charged ions. In ionic bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion.

Answer:

Ionic bond is formed by the cations and anions and their attractive forces.

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