3. Chemical Reactions

If nicotine has a molar mass of 160±5g/mol, what is its molecular formula?

A compound is 43.7% phosphorus and 56.3% oxygen. The formula mass of the compound is 284 g. calculate the empirical formula and molecular formula of the compound.

A compound has a molar mass of 180.18 g/mol. Given the following percent composition, calculate the molecular formula: 39.99% C, 6.73% H, 53.28% O.

A compound responsible for the odor of garlic has a molecular weight of 146 g/mol. A 0.650 g sample of the compound contains 0.321 g of carbon, 0.044 g 

of hydrogen, and 0.285 g of sulfur. What is the molecular formula of the compound?

A compound containing only sulfur and nitrogen is 69.6% s by mass; the molar mass is 184 g/mol. What are the empirical and molecular formulas of the compound?

Determine the empirical and molecular formula for chrysotile asbestos. Chrysotile has the following percent composition: 28.03% Mg, 21.60% Si, 1.16% H, and 49.21% O. The molar mass for chrysotile is 520.8 g/mol.

Elemental analysis of the unknown gas from part A revealed that it is 30.45% N and 69.55% O by mass. What is the molecular formula for this gas?

How many atoms of each element are in the chemical formula Ca(OH)₂?

How many atoms of nitrogen are in the chemical formula Ni(NO₃)₂? 2 1 6 3