Moles and Conversions

What is the total number of moles contained in 115 g of C₂H₅OH?

• 0

• 1.5

• 3.0

• 2.5

What is the total mass in grams of 0.75 mole of SO₂?

• 16 g

• 24 g

• 32 g

• 48 g

Find the mass of 5 moles of water.

• 18.02 g

• 36.04 g

• 90.1 g

• 25.0g

Calculate the number of atoms in 0.0340 g Zn.

• 5.200 x 10^-4 atoms Zn

• 3.130 x 10²³ atoms Zn

• 3.130 x 10²⁰ atoms Zn

• 1 atom Zn

Tags

NGSS.HS-PS1-7

How many molecules are in 2.5 mol of NaCl?

• 1.50 x10²⁴ molecules

• 1.50 molecules

• 4.15 molecules

• 1.51 x10²⁴ molecules

How many moles are in 19.82 g Mg?

• 1.23 mol Mg

• 481.70 mol Mg

• 1.00 mol Mg

• 0.82 mol Mg

How many moles are in 3.01 x 10²² atoms of magnesium?

• 0.05 moles

• 1.81 x 10⁴⁶ moles

• 5.00 x 10²¹ moles

• 5.00 moles

How many grams are in 1.2 x 10²⁴ atoms of C?

• 29.34 grams

• 23.94 grams

• 6.02 grams

• 1.21 grams

What is the molar mass of PbSO₄

• 303.3 g/mol

• 294.7g/mol

• 163.8g/mol

• 372g/mol

How many grams are in 1.2 moles of Neon?

• 0.05 grams

• 16.6 grams

• 21.2 grams

• 24 grams