FExRev

How many molecules are in 3.6 grams of sodium chloride (NaCl)?

• 0.06

• 1.0 X 10²¹

• 1.3 x 10²⁶

• 3.7 x 10²²

What is the molar mass of C₂H₄O₂?

• 40 g/mol

• 50 g/mol

• 60 g/mol

• 68 g/mol

What is the mass of 0.75 moles of (NH₄)₃PO₄?

• 101.75 g
• 121.75 g
• 111.75 g
• 131.75 g

The number 6.02 x 10²³ is called...

• Obama's number and it measures the amount of gases or liters in a mole

• Bohr's number and it measures the amount of molecules or atoms in a sample

• Avogadro's number and it measures the amount of gas in moles

• Avogadro's number and it measures the amount of molecules or atoms in a sample

_N₂ + _H₂ → _NH₃

What is the mole ratio between N₂ and NH₃ if you balanced the above equation correctly?

• 1 moles NH₃ / 2 moles N₂

• 2 moles NH₃ / 1 moles N₂

• 2 moles N₂ / 3 moles NH₃

• 1 moles N₂ / 3 moles NH₃

Which of the following represent a mole ratio between silver nitrate and copper(II) nitrate in the following reaction:

2AgNO₃ + _Cu → _Cu(NO₃)₂ + 2Ag

• 2 : 2

• 1 : 2

• 1 : 1

• 2 : 1

Using the following equation:

_Fe₂O_3(s) + 3H_2(g) → 2Fe_(s) + 3H₂O_(l)

How many moles of iron can be made from 6 moles H₂?

• 4 moles Fe

• 6 moles Fe

• 9 moles Fe

• 2 moles Fe

Boyle's Law: What happens to the volume of a gas if the pressure is doubled, assuming the temperature remains constant?

• The volume of the gas will remain the same.

• The volume of the gas will be halved.

• The volume of the gas will be tripled.

• The volume of the gas will be quadrupled.

Ideal Gas Law: What is the equation for the ideal gas law?

• P = nRT/V

• V = nRT/P

• PV = RT/n

• PV = nRT

Kinetic Molecular Theory: According to the kinetic molecular theory, how does the average speed of gas molecules change when the molar mass of the gas is increased?

• The average speed of gas molecules decreases.

• The average speed of gas molecules becomes zero.

• The average speed of gas molecules increases.

• The average speed of gas molecules remains the same.