Which molecule, when added to a solution, would give the solution the highest pH?

HCl

H2SO4

KOH

H2O

What is change in atomic number when an atom emits positron?

Explain the energetic benefits of making the enzyme active site complementary to the transition state rather than to the substrate conformation. Also explain how multiple weak interactions contribute to enzyme action.

What is a light year

Why does a metal spoon left on a bowl of hot soup become warm?

Which of the following is a chemical change? Select one: a. Boiling water b. Melting wax c. Broiling a steak on a grill d. Condensing water vapor into rainfall e. Carving a piece of wood

Which explanation best compares the movement of particles in the three states of matter? A. Particles in a gas can only vibrate. In a solid, they slide against each other. In a liquid, they move freely, bouncing and bumping into each other. B.

What is the molecular formula of the compound with a molecular weight of 112 g/mol and percent composition: 85.6% c and 14.4 % h

Calculate the enthalpy of combustion, δh∘comb, for c6h14. you'll first need to determine the balanced chemical equation for the combustion of c6h14. express your answer to four significant figures and include the appropriate units.

Complete this equation for the dissociation of NH4NO3 (aq).

Solve the following: 2.05 x 102 - 1.02 x 101