With molarity? what mass of water must be used to dissolve 500g c2h5oh to prepare a 3.00 m solution?
2.6 kg

1.65 kg

5.2 kg

3.87 kg
what is the molality of a solution that contains 80.0 g al2(so4)3 in 625 g h2o?
0.578 m

0.476 m

0.374 m

0.213
25 g of naoh is dissolved in 120 g of water. what is the molality?
5.21 m

4.16 m

3.74 m

7.32 m

What mass of water must be used to dissolve 500g C2H5OH to prepare a 3.00 m solution?

500g C2H5OH ( 1 mol / 46.07 g ) / 3 mol/kg water = 3.62 kg water needed

What is the molality of a solution that contains 80.0 g Al2(SO4)3 in 625 g H2O?

Molality = 80.0 g Al2(SO4)3 (1 mol / 342.15 g) / .625 kg H2O = 0.374 m

25 g of NaOH is dissolved in 120 g of water. What is the molality?

Molality = 25 g NaOH ( 1 mol / 40 g ) / .120 kg = 5.21 m

Ans() ; the burning of them contributes to global warmingthey come from decayed organic material;