Select all that apply. when the products of a reaction have more energy than the reactants: the reaction is exothermic. the reaction is endothermic. the reactants gave up energy. the δh is positive.

What is a binary ionic compound?

What happens to the solute particles when a solution forms?

The rate constant for the first order decomposition of A at 500oC is 9.2 x 10-3 s-1. how long will it take for 90.8% of a 0.500 M sample of A to decompose? Question options:

If you drop a rubber ball covered in cooking sheet and fry it on a frying pan on hot temperature will it catch fire or will the ball melt?

What chemicals are produced when you mix HC1 (aq) and KOH (aq) ? Nothing. There is no reaction. a. O b. NaOH and water. O c. CO2 and water O d. Water and KCl

Name the feature of the ocean floor shown at A and describe how it's formed.

A certain element consists of two stable isotopes. The first has a mass of 62.9 amu and a percent natural abundance of 69.1 %. The second has a mass of 64.9 amu and a percent natural abundance of 30.9 %. What is the atomic weight of the element?

Nonmetals rarely lose electrons in chemical reactions because?

What is the mass of carbon in 500. g of octane?

Which of the following is true about the relationship between the energy gap (∆E) between the spin states for a 1H nucleus and the strength of the external magnetic field?