Molar Mass and Percent Composition

Front

How would we calculate the molar mass of H₂O? Options: 2+16=18, 1+16=17, 2+32=34, 1+31=32

Back

2+16=18

Front

What is the molar mass of CO₂?

Back

44 g/mol

Front

Find the percentage composition of Mg in Mg₃(PO₄)₂.

Back

27.48% Mg

Front

What is the molar mass of table salt (NaCl)?

Back

58.443 g/mol

Front

Which of the following is NOT needed to calculate percent composition? Mass of specific element, Molar Mass, Avogadro's Number, Division

Back

Avogadro's Number

Front

Calculate the molar mass of Ba(C₂H₃O₂)₂

Back

255.3 g/mol

Front

What is the percent by mass of sodium in NaCl?

Back

39%

Front

What is the mass percentage of Carbon in Carbon dioxide (CO₂)?

Back

27.27%

Front

What are the units in molar mass? Options: grams, moles, moles/gram, grams/mole

Back

grams/mole

Front

The molar mass of an element is equal to its...

Back

Atomic mass