Which is a characteristic of an Atoms

1. They come in 10 major types

2. They are smallest Unit of matter

3. They can be divided

4. They cannot combine together

Which statement best describes the difference between nuclear fission and nuclear fusion reactions?

How many grams are in 1.60 moles Hg (NO3) 2

How many grams are present in a 5.63 liter container filled with O2 at STP?

Part a - calculate the value of q what is the value of q when the solution contains 2.00*10-3 m ca2 + and 3.00*10-2m so42-? express your answer numerically.

Scientists have discovered a new planet with many craters. Which of the following would be an appropriate hypothesis?

Some covalent compounds contain atoms of just one element. true or false?

You wish to calculate the mass of hydrogen gas that can be prepared from 4.93 g of srh2 and 4.14 g of h2o.

Are needed to digest food in the stomach

What is the volume of 2.1 moles of chlorine gas at STP?

If one starts with pure NO2 (g) at a pressure of 0.500 atm, the total pressure inside the reaction vessel when 2 NO2 (g) ⇌ 2 NO (g) + O2 (g) reaches equilibrium is 0.674 atm. Calculate the equilibrium partial pressure of NO2.