2.524 g (5.1 × 106 g) ÷ (6.85 × 103 g) = ? how many significant figures should the result have?

Explanation:

To solve the equation, we will first multiply the numerator and denominator separately and then divide it, to attain the final result.

The equation given is:

Whenever multiplication and division are involved, the answer must not contain, more number of significant figures as there are in the least precise term.

Of all the given terms, the least precise number has 2 significant numbers. Therefore, the answer  would have 2 significant figures and the final answer will be 1.9

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.