Which of the following is a pure substance that can be separated by physical means and can't be decomposed into other substances by chemical means

A: element

B:molecule

C: compound

D: mixture

Which functional group is found in methanol? R-O-R -NH2 -OH R-X Its - OH i just took the test

Determine the molarity of a 45ml 7 moles solution of HCI

What is one of the products produced when Mg (NO3) 2 and AlPO4 react together?. Mg3 (PO4) 2. Al (NO3) 2. Mg (PO4) 2. AlNO3 ...

A tube that carries air from the larynx to the lungs is called

Most earthquakes are produced by the rapid release of what kind of energy stored in rock and subjected to great forces?

Which change might cause a cold spell in the northern united states

Kipps appratus is for what?

Which of the following statements about protons are true? Protons have twice the mass of neutrons. Protons have the same magnitude of charge as electrons but are opposite in sign. Protons have a charge of 1+.

What is true of an acidic solution at room temperature?

Why does a higher concentration make a reaction faster? There are more collisions per second and the collisions are of greater energy. Collisions occur with greater energy. There are more collisions per second.