When 4 moles of aluminum are allowed to react with an excess of chlorine gas, Cl2, how many moles of aluminum chloride are produced?

a solution contains 29.1g per litre of aluminium sulphate. calculate the number ofsulphate ions in 350cm^3 of the solution (Al=27, S=32, O=16)

An atom has a mass number of 9 and 5 neutrons. What is its atomic number?

Classify vegetable soup as a pure substance or a mixture. if it is a pure substance, classify it as an element or a compound. if it is a mixture, classify it as a homogeneous or heterogeneous.

The density of copper is 9.0g/cm3 and the mass of a copper coin is 0.31g. Calculate the volume of the coin.

A patient is receiving treatments for brain cancer. Which electromagnetic waves are most likely being used as part of the treatment? A) infrared B) ultraviolet C) microwave D) gamma ray

How many moles of co2 are produced when 10 mol of propane (c3h8) is burned in excess oxygen?

Why are the spheres representing nitrogen and oxygen different colors

How many moles are in 16.94g of water?

Two compound samples are found to have the same mass percentages of the same elements. what can you conclude about the two samples

Sodium hypochlorite (Na xCl yO z) is the active ingredient in household bleach. A 250.0 g sample of sodium hypochlorite contains 77.2 g sodium, 119.1 g chlorine, and the remainder is oxygen. Calculate the empirical formula of sodium hypochlorite.