How many moles are in 4.5 g of magnesium sulfate

What happens to the chemical energy in fireworks as they explode

What trend in atomic radius occurs down a group on the periodic table

Which of the following pressures is equal to 303,900 pa? 3.0 atm 303.9 atm 303,900 atm 3.00 mm Hg

What is an example of a physical change? A: having less ash than the paper that was burned to form it B: ice forming and then melting back into water C: rust having a different identity than the iron it forms on D: the irreversible reaction of

Which of these contains only one substance? A. distilled water B. sugar water C. saltwater D. rainwater

What is natural transmutation?

An electron in a sodium atom gains enough energy to move from the second shell to the third the sodium atom becomes

What is temperature in science, how fast molecules move or how cold or hot something is?

Which describes an object's speed when free falling in a vacuum? The object accelerates until it reaches its terminal velocity. The object falls at a constant speed because only one force acts on it.

If you had 20,000 liters of NO2 how many moles would you have?