The early paleozoic dominated by

A. reptiles

B. amphibians

C. fish

D. inverterbrates

The equilibrium constant Kc for the equation2H2 (g) + CO (g) ⇌ CH3OH (g) is 35 at a certain temperature. If there are 3.21 * 10-2 moles of H2 and 4.87 * 10-3 moles of CH3OH at equilibrium in a 3.63-L flask, what is the concentration of CO?

What type of radiation does the ozone layer affect

Which of the following statements does not describe a physical property of a piece of chalk A. Chalk is solid B. chalk can be broken into pieces C. Chalk is white D. Chalk will bubble in vinegar

What will happen to the pressure inside a container of gas if some of the gas is allowed to escape? Select one: a. there will be no effect on the pressure b. The pressure will increase c. the effect is impossible to determine d.

Destiny is the measure of what A. How much mass is in a substance B. How much volume is in a substance C. How much mass per unit of volume is in a substance

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.