An atom has 5 protons and 7 neutrons. What is its mass number?

Why might you have difficulty determining the pH of bleach using ph strips?

What kind of bond would a metal and a nonmetal typically make? A. An Ionic bond B. A Metallic bond C. A Double bond D. A Covalent bond

a gas with a volume of 3.39 L at a pressure of 0.63 atm is allowed to expand until the volume raises to 66 L. What is the new pressure

1. While deployed to a disaster operations center, an employee informs a supervisor that they have a medical condition, and require some sort of adjustment to their normal work routine. What should the supervisor do? A.

What happens when particles with a larger mass diffuse more slowly than particles with a smaller mass

What is the net ionic equation for AgNO3 (aq) + Na2SO4 (aq)

What does it take to prove a hypothesis false? O A. It is impossible to prove a hypothesis false O B. At least ten examples O C. One counterexample O D. A poorly stated question

We dissolve 5g of sugar, C12H22O11, in water to make 1L solution. What is the concentration of this solution expressed as molarity.

Explain how the molar mass of a gas affects the rate at which the gas diffuses and effuses

Wat is a redox reaction