Which one of the following is a base?

A. HCI

B. Cu (OH) 2

C. HNO3

D. HC2H3O2

What Is a high-temperature physical state of matter in which atoms lose their electrons?

Explain the energy changes that occur when the following reaction happens: H2 + Cl2 → 2HCl A. Energy is absorbed when the HCl bonds form. B. Energy is needed to break the bonds of H-H in H2 and Cl-Cl in Cl2 C.

Which of the following is untrue concerning a reversible reaction? a. All reversible reactions will reach equilibrium. b. The reaction always spends equal time in the forward and reverse direction. c.

if water absorbs 0.779j and has a mass of 0.4866g, how much would its temperature go up? a) 0.383 C b) 7.458 C c) 0.137 C d) 0.233 C

The chemical formula of oxygen is o2 that means it is a single compound or molecule gas? It is pure substance or mixture?

Which property of gases allows them to be stored at high concentrations in a bottle of air freshener? What changes occur at the molecular level when ice cream melts and forms a liquid?

a gas has a volume of 6 liters and a pressure of 1.5 atm. if the container is compressed to a volume of 2 liters, what will the pressure of the gas be?

When metals react with nonmetals, an ionic compound generally results. what is the predicted general formula?

Why could the Bohr model not predict line spectra for atoms other than hydrogen?

Cryolite, Na3AlF6 (s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. Balance the equation. 1.) Balance the equation - AlO3 (s) + NaOH (l) + HF (g) - ->Na3AlF6+H2O (g) 2.) If 17.5 kilograms of Al2O3 (s), 51.