What is basic of matter that can't be broken down

A sample of hydrated magnesium sulfate, mgso4 xh2o, weighs 21.0 g. it is placed inside of an oven until all of the water is vaporized, the anhydrous form weighs 12.0 g. what is the value of x in the hydrated salt? mgso4 = 120 gmol-1.

Which of the following gases is not an important component of soil?

If I mixed milk and vinegar together would it be a chemical or physical change?

Explain the changes that take place at the molecular level when a substance is superheated or supercooled?

How are elements in the nitrogen family (group 15) similar to each other

The electron configuration for an atom is 1s22s22p2. How many electrons does the atom have? 4 2 6 5

When a piece of sodium carbonate reacts with dilute HCl, a gas X is produced. When gas X is passed through lime water then the solution turns milky and a white precipitate Y is formed a. Write the chemical formula of X, Y and (3) b.

Would precipitation occur when 500 mL of a 0.02M solution of AgNO3 is mixed with 500 mL of a 0.001M solution of NaCl? Show your work.

What compound is always part of an aqueous solution?

How did scientists carry out research before and after the scientific revolution?