Question

12. 1 u equals
(a) the mass of an H atom
(b) the mass of a C atom
(c) the mass of an O atom
of the mass of a C atom
12
13 Which elements are present in sodium phosphate?​

Answer 1

Answer:

12. (b) the mass of a C atom

13. Sodium phosphate is a group of chemical compounds. The phosphate atom can hold three other atoms. They can be three hydrogen (phosphoric acid), two hydrogen and one sodium(sodium dihydrogen phosphate), one hydrogen and two sodium (disodium hydrogen phosphate), or three sodium (trisodium phosphate).

Explanation:

Hope this answer helps you!