2 years ago

What mass of a .413% KCN solution contains 545 mg of KCN?

1 answer:

8 0

328 % means 0.328 g of KCN in 100 g of solution

0.328 g of KCN ---------> 100 g of solution

1120 * 10^-3 g of KCN ------> (100 / 0.328) * 1120 * 10^-3

= 341 g of solution

You might be interested in

Consider the combustion of glucose: c6h12o6(s) + 6 o2(g) ←→ 6 co2(g) + 6 h2o(g) ∆h = −2, 800 kj/mol which condition i) adding mo

Verizon [17]

The answer is iii) decreasing the pressure of the system. When the pressure is decreased, the equilibrium will shift to the right because it has 12 moles of gas which is greater than the number of moles of gas on the left side, which is 6 moles. Equilibrium shifting to the side that exerts greater pressure is favored to offset the decrease in pressure.

6 0

2 years ago

1)Which of the following changes would decrease the rate at which a solid solute dissolves in a liquid solvent? (3 points)

Diano4ka-milaya [45]

Answer:

The first one is B, "Decreasing surface area."

Explanation:

This is because greater the surface area exposed, the more collisions that occur between the solvent and solute. I also just took the test myself and got it correct.