What is the mass of iron contained in 100g of an iron ore?

What is an atom called at has gained or lost electrons? a. molecule. b. ion. c. polar d. nonpolar.

Mass to moles: how many moles in 56g of carbon

How are igneous rocks formed? A. Heat and pressure from nearby magma changes existing rock. B. Lava or magma cools and then crystallizes. C. Sediments deposit in a lake and turn to stone. D. Lava or magma heats up and crystallizes.

What volume of a 0.100MHCl0.100MHCl stock solution should be used to prepare 250.00mL250.00mL of 0.0250MHCl0.0250MHCl?

How is the mass of a gaseous substance affected after it condenses? A. It increases. B. It decreases. C. It stays the same.

Chloroform was used as an anesthetic for childbirth and surgery during the nineteenth century. Write the molecular formula of chloroform.

Why are alloys generally used to make everyday objects

What types of matter could be separated by physical methods?

What information does a net ionic equation give that a complete ionic equation does not show

What is the molality of a solution containing 4.0 moles of solute in 3.2 kg of solvent? Round to the nearest tenth. Don't forget the units.