There are more electrons than protons in a negatively charged atom.

True

False

If the Sun were much smaller than its current size, what effect would this have on eclipses?

determine the percent yield for carbon dioxide if 4.50 moles of propane yielded 7.64 moles of carbon dioxide

Which of the following concerning electrolytes and the solubility rules is/are true? 1. The solubility rules apply only to ionic substances. 2. All soluble ionic compounds are considered strong electrolytes. 3.

Which of the following is a polyatomic ion? Н+ OH+ OH- O2-

A balloon filled with 39.1 moles of helium has a volume of 876 l at 0.0'c and 1.00 atm pressure. the temperature of the balloon is increased to 38.0'c as it expands to a volume of 998 l, the pressure remaining constant.

What is the number of moles of 27.6g of lithium?

Air is transferred from a 75 L tank where the pressure is 125 psi and the temperture is 288 k to a tire with a volume of 6.1 L and a pressure of 25 psi. What is the new temperture.

Which of the following is a measure of randomness in a system? A) entropy. B) kinetic energy. C) potential energy. D) chemical energy.

What substance can be broken down by chemical means? A) ammonia B) aluminum C) antimony D) argon (Castle learning question)

How the law of conservation of mass could be useful for investigating chemical changes