Question 1
What mass of calcium chloride, CaCl2, is needed to prepare 3.350 L of a 1.57 M solution?
◦
237 g◦
5.26 g◦
52.0 g◦
111 g◦
584 gQuestion 2
What mass of NaOH is required to react exactly with 25.0 mL of 2.8 M H2SO4?
◦
2.8 g◦
0.7 g◦
5.6 g◦
140 g◦
none of these are correct