100g of calcium carbonate was heated until it decomposed to give calcium oxide and carbon dioxide. 56g of calcium oxide was left. Work out the mass of carbon dioxide given off.

The nucleus of an atom holds 4 neutrons and 4 protons, how many electrons does it have

In the event that you are exposed to infectious materials by being accidentally stuck with a used needle, you should report it to your supervisor and seek medical attention. However, what is the one thing you should do first? A. Bandage the wound B.

What chemical is PCL3

2. I'm strong and stiff. Getting through me is TOUGH! I'm found only in plants and I guess that's enough

Convert 115 lb to kg

which of Nature's erosions message do you think wears down a mountain or part 2 faster when water or ice why

We dissolve 5.00 grams of sugar, C12H22O11, in water to make 1.000 L of solution. What is the concentration of this solution expressed as a molarity?

What mass of carbon monoxide must be burned to produce 175 kj of heat under standard state conditions?

The Wittig reaction involves coupling between a phosphonium ylide and a carbonyl-containing molecule. If a chemist wants to use the Wittig reaction to synthesize 3-methyl-3-hexene, which reactants should be used?

How many grams of zinc are needed to produce 25.0 g ZnCl2