CH.2- 14, 18, 19, 20

please help me get the correct answers i only have one try left

14 Be sure to answer all parts. 10 points Give the name and formula for the acid derived from the following anion: periodate. Name: (select) vlacid eBook Formula: References N 18 10 points Select the mass law(s) demonstrated by the following experimental results. Experiment 1: A student heats 1.27 g of copper and 3.50 g of iodine to produce 3.81 g of a white compound; 0.96 g of iodine remains. Experiment 2: A second student heats 2.55 g of copper and 3.50 g of iodine to form 5.25 g of a white compound; 0.80 g of copper remains. Select all that apply: Law of multiple proportions eBook References Law of mass conservation Law of definite composition 19 Enter your answer in the provided box. 10 points Calculate the molecular (formula) mass of the following compound: diphosphorus trioxide eBook Formula mass: amu References 20 Be sure to answer all parts. 10 points Give the name and formula of the compound formed from the elements zL and 9M. Name: (select) (select) (select) eBook Formula: References