are my answers correct

2. Explain how you determine which reactant is the limiting one in a chemical reaction. Why is it important to determine the limiting reactant? (4 marks) Steps 2. It is important because 1. Start with balanced equation it dictates the maximum 2. Change / convert mass of reactants amount of product to moles that can be formed 3. Determine mole ratio, divide the in a reaction moles of each reactant by it's Corresponding coefficent in equation 4. The reactant with the lowest resulting value is the limiting 3. You have added a small amount of magnesium metal to a solution containing copper (II) nitrate. By your calculations, you should be recovering 1.50 g of Cu metal. However, when you mass the copper, you measure 1.65 g. Suggest two possible errors that would have led to this amount of recovered copper. (4 marks) 1. Copper was not fully dreid before weighing, adding water / liquid extra weight, increasing mass 2, impurities of extra My became mixed unreacted My may contaminate copper, increasing it's weight 4. State the following: a. The empirical formula of C6H602 (1 mark) Simplist whole number ratic CG HE Oz = (3 H3 0 = 2 b. The molecular formula for a compound with a molar mass of 56.1 g/mol and an empirical formula of CH2. (2 marks ) 1. molar mass of emperical famula = 12. 01 + 2 (1. 01) = 14.03 g/m 2. multiplyer / ral.o = molecular mass = 56. 1 = 4 emperical mass 14.03 3. Molecular formula = 41 ( CH2 ) = Cy Ho