Question 1
Diabetics often need injections of insulin to help maintain the proper blood glucose levels in their bodies. How many moles of insulin are needed to make up 45 mL of 0.0066 M insulin solution?
◦
0.00059 mol◦
0.15 mol◦
6.8 mol◦
0.30 mol◦
0.00030 molQuestion 2
For the reaction 4FeCl2(aq) + 3O2(g) → 2Fe2O3(s) + 4Cl2(g), what volume of a 0.620 M solution of FeCl2is required to react completely with 8.12 × 1021molecules of O2?
◦
6.45 × 103mL◦
11.1 mL◦
16.3 mL◦
29.0 mL◦
6.27 mL