Calculate the molarity of 0.50 mol MgCl2 in 750 ml of solution.

A) 0.38 M

B) 0.67 M

C) 0.75 M

D) 0.95 M

In what other planets did differentiation occur? Neptune Mercury Venus Jupiter Mars

If there are 11 protons and 10 neutrons in the nucleus of an atom, what is the atomic number?

A 0.055 mol sample of formaldehyde vapor, CH2O, was placed in a heated 500 mL vessel and some of it decomposed. The reaction is CH2O (g) H2 (g) + CO (g) At equilibrium, the CH2O (g) concentration was 0.051 mol L-1.

What is the electron configuration of kr?

If you leave a solar powered flashlight in the sun for 8 hours, it will be able to stay lit for 3 hours. What would happen if you placed the flashlight under a bright light bulb for 8 hours?

How many moles of a gas will occupy 2.50L at STP

Which has more kinetic energy, a small sports car traveling at 30 km/hr or a large tractor-trailer traveling at 75 km/hr?

A Lay's potato chip weighing 4.03g is put into a bomb calorimeter containing 895.5g of water at 25.10°C. If this increases the temperature of the surrounding water to 48.89°C, what is the amount of calories per serving if 1 serving = 28.38g.

Which element is the least metallic between cadmium, silver, zinc, or iron?

Describe the motion of molecules in an ice cube an in a radiator in winter