Molar Mass & Gram-Mole Conversions

How many of each element are in the compound CoCl₂

• 1 cobalt, 2 chlorine

• 1 carbon, 1 oxygen, 2 chlorine

• 2 cobalt, 2 chlorine

Tags

NGSS.MS-PS1-1

How many carbon atoms are shown by the formula V(C₂O₄)₃?

(a)  

How many of each element are in the compound Cu₃(PO₄)₂

• 3 copper, 2 phosphorus, 8 oxygen

• 3 copper, 1 phosphorus, 8 oxygen

• 3 copper, 1 phosphorus, 6 oxygen

• 1 copper, 3 phosphorus, 6 oxygen

The molar mass of MgF₂

• 62.31 g/mol

• 43.31 g/mol

• 86.62 g/mol

• 5.31 g/mol

The molar mass of Mn(CO₃)₂

• 174.96 g/mol

• 162.95 g/mol

• 82.95 g/mol

• 144.33 g/mol

The molar mass of (NH₄)₃P

• 85.12 g/mol

• 57.10 g/mol

• 110.96 g/mol

• 144.03 g/mol

Convert 23.55 g of NF₃ to moles.

• 0.3316 mol NF₃

• 1672 mol NF₃

• 3.01 mol NF₃

• 0.6540 mol NF₃

Convert 11.3 g Cu(NO₃)₂ to moles

• 0.0602 mol Cu(NO₃)₂

• 17.8 mol Cu(NO₃)₂

• 2280 mol Cu(NO₃)₂

• 0.0651

Tags

NGSS.HS-PS1-7

What is the mass of 0.755 mol NiBr₂?

• 165 g NiBr₂

• 0.00346 g NiBr₂

• 289 g NiBr₂

• 0.0558 g NiBr₂

What is the mass of 0.244 mol of Ca(OH)₂

• 18.1 g Ca(OH)₂

• 0.00329 g Ca(OH)₂

• 304 g Ca(OH)₂

• 14.2 g Ca(OH)₂

Tags

NGSS.HS-PS1-7