trueth780

F varies directly with m m and inversely with the square of d. If d=3 when m=360 and F=160, find d when m=720 and F=80.

1. Calculate the mass of calcium chloride CaCl2 required to prepare 50.0ml of a solution with concentration (molarity) 0.425M

2. Determine the final concentration if 125mL of 0.425 M calcium chloride solution is diluted to a final volume of 500.0mL

Suppose that the resistance between the walls of a biological cell is 3.22 x 109. (a) What is the current when the potential difference between the walls is 74.6 mV? (b) If the current is composed of Na+ ions (q = +e), how many such ions flow in 0.726 s?