Find the empirical formula of a compound that contains 42g of nitrogen and 9g of hydrogen.

At constant temperature and pressure, 2.05 g of oxygen gas O2 is added to a 1.0 L balloon containing 1.00 g of O2. What is the new volume of the balloon?

Whats a chemical and what does it do?

Which statement is true? A. In a reaction, oxidation can occur independently of reduction. B. A redox reaction involves either the transfer of an electron or a change in the oxidation state of an element. C.

Is potassium a metal, nonmetal, or metalloid?

A quantum of energy is the amount of energy required to do what

Assume we could alter the conditions in the duodenum. Which of the following would be consistent with inserting a large volume of highly acidic chyme which contained a large amount of fat?

Molecules that form when electrons are shared unequally between atoms are called

Explain why substances do not crumble into piles of atoms.

Being able to identify good source of scientific information and apply the knowledge to problems in your life is a part of having A Scientific hypothesis B Scientific inquiry C Scientific literacy D Scientific laws

The label on a bottle of shampoo lists many ingredients, such as water, sodium laureth sulfate, lauramide dea, sodium chloride, etc. from this information, shampoo is best classified as