How are rare earth elements like neodymiun important to our technological world?

Reactions that affect the nucleus of an atom are called? A. Fusions B. Radioactive decays C. Nuclear reactions D. Fissions

If I have ten hydrogen molecules and three oxygen molecules, how many molecules of water can I make and how many leftover?

When energy is transferred to ocean water from the moving air above it, what happens to most of the energy. A. It pushes the water foward B. It cause the water to evaporate C. it moves through the water D. It reflects of the surface of the water

What is 99 times 100

The atomic mass of silicon is approximately 28.055. Which of the following would indicate the number closest to 28.055? 1. atomic number 2. mass number 3. number of electrons + neutrons 4. number of protons + electrons

A solution which has a concentration that exceeds its predicted solubility at a certain temperature and pressure would be -

Convert 4.992*1010 g to each of the following units. B. Mg c. mg D. metric tons

The ideal gas law shows us how a gas will behave under many conditions. The formula is: P V = n R T Where P = pressure, V = volume, n = amount of the substance, R = ideal gas constant, and T = temperature.

The Suns ultraviolent Rays can cause skin damage including sunburn and even skin

Peas contain 250 kJ per 100 g. You would use the equivalent of 600 g of peas if you slept for.