What are economic challenges that governments must face? Check all that apply.

1. threats of war

2. unemployment

3. low production

4. inflation

5. low voter turnout

What happens to wood when it burns?

What statement best describes the compresibility of a gas?

Given that Rubidium has two isotopes, 85Rb and 87Rb. Calculate the average atomic mass of rubidium. Note that 85Rb has an atomic mass of 84.912 amu and occurs at an abundance of 72.17% while 87Rb has an atomic mass of 86.

What is the frequency a measure of?

Circle that atom with the smaller atomic size

How many metaloides are found on the periodic table

Which of the following is considered to be a chemical property of matter?

How does percent composition by mass contribute to writing a balanced equation?

Raising the temperature of a reacting system increases the rate of the reaction, but does NOT increase the a) activation energy b) number of collisions c) fraction of the reacting particles which possess energies greater than the activation energy

If you have 60 grams of MgCl2 in 5 liters of solution, what is the molarity of this solution?