Question

3.58 g of K and 1.22 g of I Express your answers using three significant figures. Provide the mass percents for K and then I, and separate the values with a comma (e.g., 45.0,55.0).

3.39 g of N, 0.940 g of H, and 3.88 g of S

Express your answers using three significant figures. Provide the mass percents for N, H, and S, in that order, and separate the values with commas (e.g., 22.0,45.0,33.0).

4.48 g of C, 0.695 g g of H, and 2.76 g g of O

Express your answers using three significant figures. Provide the mass percents for C, H, and O, in that order, and separate the values with commas (e.g., 22.0,45.0,33.0).

Answer 1

Q1. K and I

mass percent K = 74.6 %

mass percent I = 25.4 %

Q2. N , H and S

mass percent N = 41.3 %

mass percent H = 11.4 %

mass percent S = 47.3 %

Q3. C , H and O 7.935

mass percent C = 56.5 %

mass percent H = 8.76 %

mass percent O = 34.8 %