How many atoms of xenon are in 3.50 moles of Xe gas?

The element with the electron arrangement of 2, 8, 6 is:

Carbon dioxide, CO2, contains 12.01 g of carbon in every 44.01 g of carbon dioxide. What mass of carbon dioxide can be formed from 85.20 g of carbon?

What is the molar mass of carbon disulfide, CS2?

The label on a container of baking soda lists one ingredient: sodium bicarbonate. Which one of the following best classifies the contents in baking soda?

Laughing gas, N2O, also known as nitrous oxide contains 28.01 g of nitrogen in every 44.01 g of nitrous oxide. What mass of nitrous oxide can be formed from 34.50 g of nitrogen?

The model of the atom that shows positive sub-particles in a very small and dense center is:

How many moles of potassium nitrate, KNO3 , contains 8.68 x 1020 KNO3 formula units?

The correct chemical formula for the binary ionic compound between Mg2+ and O2- is:

A glass cylinder contains four liquid layers: mercury (d = 13.6 g/mL), chloroform (d = 1.49 g/mL), water (d = 1.00 g/mL) and ether (d = 0.708 g/mL). If a solid ball (d = 1.45 g/mL) is dropped into the cylinder, where does it come to rest?