What is contained in the nucleus of an atom?
a. protons
c. electrons and protons
b. neutrons
d. protons and neutrons

The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.

What is similar between metals and suspensions

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical