Stoichiometry

• 0.64mol

• 0.64 atoms

• 0.64g

• 6.04 mol

Molar mass is in units of ________.

• grams

• grams/mole

• mole

• moles/gram

The percentage by mass of the elements in a compound is

C = 72%, H = 12 %, O = 16%.

What is the mole ratio of C : H in the empirical formula of this compound?

How many oxygen atoms are present in 0.0500 mol carbon dioxide?

• 6.02 x 10²³

• 6.02 x 10²²

• 3.01 x 10²³

• 3.01 x 10²²

Tags

NGSS.HS-PS1-7

How many grams are in 88.1 moles of magnesium?

• 2141 g

• 0.3 g

• 30 g

• 3.6 g

Tags

NGSS.HS-PS1-7

How many grams are in one mole of Oxygen

• 16

• 32

• 15.99

• 31.98

How many atoms are in 1 mole of NaCl?

• 6.02 x 10²³

• 58 

• 11

• 17

What is the molar mass of H₂O?

• 6.02 x 10²³

• 16 grams

• 18 grams

• 15.99999 grams

Tags

NGSS.HS-PS1-1

What is the molar mass of B₂(CO₃)₃?

• 81.632 g/mol

• 94.842 g/mol

• 38.822 g/mol

• 201.648 g/mol

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-7