what is the relative formula mass of phosphate (PO4)? (To the nearest tenth) A. 187.9 grams B. 46.9 grams C. 23.0 grams D. 94.9 grams

Explanation:

Relative formula mass of phosphate:

=>  [Ignoring the charge on it]

Atomic mass of P = 31.0 grams, O = 15.9 grams

=>  30.97 + 4(15.9)

=> 30.97 + 63.9

=> 94.87

≈ 94.9 grams [To nearest tenth]

Explanation:

Phosphate chemical formula is given as,

There is one phosphorus atom and four oxygen atoms.

Atomic mass of Phosphorus = 30.974 grams

Atomic mass of Oxygen = 15.999 grams

The relative formula mass of phosphate is 94.9 grams.

d.) circle motion requires a force to give it a centripetal acceleration.