Mole Conversions

How many molecules are in 3 moles of H2O?

• 1.807 x 10^24 molecules

• 6.022 x 10^23 molecules

• 3.011 x 10^24 molecules

• 1.000 x 10^24 molecules

How many molecules are in 9.44 moles of AlCl3?

• 3.01 x 10^24 molecules

• 5.68 x 10^24 molecules

• 1.20 x 10^25 molecules

• 2.50 x 10^23 molecules

How many grams are in 1.2 x 10^24 atoms of carbon (C)?

• 12 grams

• 24 grams

• 36 grams

• 48 grams

What is the relationship between moles and molecules?

• 1 mole of any substance contains Avogadro's number of molecules.

• 1 mole of any substance contains 6.02 x 10^23 grams of molecules.

• 1 mole of any substance contains twice the number of molecules as its molecular weight in grams.

• 1 mole of any substance contains the same number of molecules as its temperature in Kelvin.

How do you find the number of moles from a given number of molecules?

• Moles = Number of molecules / Avogadro's number

• Moles = Number of molecules x Avogadro's number

• Moles = Number of molecules + Avogadro's number

• Moles = Number of molecules - Avogadro's number

Why is it important to understand mole conversions in chemistry?

• They are only relevant for advanced chemistry courses.

• They help in calculating the mass of substances in grams.

• Mole conversions are essential for stoichiometry and understanding chemical reactions.

• They are not important for practical applications.

What is Avogadro's number?

• 6.022 x 10^23 molecules/mole

• 3.014 x 10^23 molecules/mole

• 1.602 x 10^23 molecules/mole

• 9.109 x 10^23 molecules/mole

What is the significance of molar mass in conversions?

• Molar mass is used to convert between grams and moles.

• Molar mass is used to determine the color of a substance.

• Molar mass is used to calculate the temperature of a solution.

• Molar mass is used to measure the volume of a gas.

What is the formula to convert grams to moles?

• Moles = Mass (grams) / Molar Mass (g/mol)

• Moles = Mass (grams) x Molar Mass (g/mol)

• Moles = Molar Mass (g/mol) / Mass (grams)

• Moles = Mass (grams) + Molar Mass (g/mol)

What is the molar mass of C6H12O6?

• 180.16 g/mol

• 150.12 g/mol

• 200.18 g/mol

• 175.00 g/mol