(ii) Butane has the formula C4H10.
Calculate the mass of carbon in 100 g of butane.
Give your answer to three significant figures.
(relative atomic masses: H = 1.00, C = 12.0;
relative formula mass: C4H10 = 58.0)
You must show your working.

Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?

What is the atomic number of an atom that has 6 protons

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