Physical means can be used to separate mixtures. compounds. pure substances. elements.

The is a particle with one unit of positive charge a. proton b. positron c. electron d. nucleus awnser quick it is a important science test!

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

Suppose you mix one mole of sulfuric acid (h2so4) with 1 mole of sodium hydroxide(naoh). why does the ph of the solution remain below 7? ( explain so i can get better understanding! )