A hardware salesman measures the mass of a box containing 1000 washers. The mass is 1.1298kg. What is the mass of a single washer in milligrams? Write your answer as a decimal.

A5.000 g sample of niso4 h2o decomposed to give 2.755 g of anhydrous niso4. what is the formula of the hydrate? what is the full chemical name for the hydrate? what is the molar mass of the hydrate? niso4•_h2o what is the mass % of water in the hydrate?

What volume would 2.25 moles of ne has occupy at stp?

Convert .347 kilometers to miles show your work