Select the correct answer.

The chemical composition of most stars usually has which element in the highest concentration?

A. oxygen

B. hydrogen

OC. chromium

OD. lead

How are isotopos defined? forms of different elements that have the same number of neutrons in each atom forms of different elements that have the same number of protons in each atom forms of the same element that differ in the number of neutrons in

Is ch4 an alkane alkyne or alkene compound

Discuss why temperature is the most important factor in determining the state of a substance.

How many bonds are present in HCI? a) 1 b) 3 c) 4 d) 2

Sometimes the goals of different social institutions conflict, making it difficult to meet people's needs.

Write a balanced equation for the combustion of 1 mol of C4H10O (l). Express your answer as a chemical equation. Identify all of the phases in your answer.

A thermonuclear chain reaction is considered to be a: -sustaining reaction in which the products cause new reactions fusion reaction because new material is combined many times }common phenomenon for all unstable uranium atoms proton creation

Which atoms are most likely to form covalent bonds?

Which phrase is the best description of weathering? A-Compacting Rocks B-Cementing Rocks Together C-Crystallizing to form minerals D-Breaking Rocks into fragments by physical or chemical means

Calculate the acid dissociation constant of a weak monoprotic acid if a 0.5M solution of this acid gives a hydrogen-ion concentration of 0.000 1M? Show your work.