If an atom of sodium has 11 protons, what is its approximate atomic mass?

Lightning is a very large flow of electrical energy. Describe the type of energy that creates the electrical energy.

Phosphoric acid reacts with magnesium hydroxide to produce magnesium phosphate and water via the following reaction:? H3PO4 + ? Mg (OH) 2->? Mg3 (PO4) 2 + ? H2O Balance the equation, then enter the coefficients, in order, in the answer box.

What are some physical charters tics scientist use to classify vertebrates

How much water should be added to 85 mL of 0.45 M HCI to reduce the concentration to 0.20 M?

One molecule of the antibiotic known as penicillin g has a mass of 5.553*10-22g. what is the molar mass of penicillin g?

Are energy levels and orbitals the same thing?

Heating devices can be made by passing an electric current through a conductor of: high resistance low resistance high conductivity low conductivity

What is the element 3O2 name

Why sulphur used for food preservation?

How would a solution that is labeled 5.0 molar be similar to one labeled 5.0 molal?