Osmium has a density of 22.6 g/cm3. What volume (in cm3) would be occupied by a 21.8 g sample of osmium? 1.04 2.03 * 103 493 0.965 2.03 * 10-3

The layer of the interior of the sun where the temperature drops from 7,000,000°C to 2,000,000°C

Name three machines which convert straight motion to circular motion.

Which acid and base reacted to get the salt KCl? KOH and HCl OH and HI OH and HCl KOH and HI

What best explains the reason solids have a definite shape and volume? A. the molecules in solids move past each other easily. B. the molecules in solids stay in a definite location and vibrate. C.

Is it true that a compound is different from the elements that reacted to from it?

What can form as a result of a chemical reaction?

A solution of orange juice that weighs 500 g contains liquid juice and solid pulp. All of the pulp is removed from the juice. The pulp is found to weigh 50 g. How much would the remaining liquid juice weigh? A. 50 g B. 250 g C. 450 g D. 500 g

Assume 3 molecules of Fe react according to the following equation. 3Fe + 4H2O Fe3O4 + 4H2 How many molecules of H2 are produced? How many water molecules are required? What is the mole ratio of Fe to H2O?

10.0 mL of a HF solution was titrated with a 0.120 N solution of KOH; 29.6 mL of KOH were required to completely neutralize the HF. Calculate the normality of the HF solution.

The number of grams present in 1.35 mol of Fe is