(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.

Suppose you got a low yield of benzoin from your benzoin condensation reaction and thus only have 0.300 g of benzoin to use as the starting material for this reaction. how much concentrated nitric acid should you add? (concentrated nitric acid is 15.8 m). write your answer in the form x.xx ml

Select all that apply. a beta particle: is electromagnetic energy is an electron has zero charge is emitted from the nucleus has a +2 charge has a -1 charge

Explanation for basic character?