1. Determine the number of significant figures in each of the following. (a) 0.7680
(b) 1230.00
(c) 1000.01
(d) 120.0
(e) 1.09 x 104
(f) 0.0080060

Explanation:

a) 3 sig. figures

b) 3 sig. figures

c) 6 sig. figures

d) 2 sig. figures

e) 1.09 × 104 = 113.36 = 5 sig. figures

if it is 1.09 × 10^4, it is 10900 = 3 sig. figures

f) 4 sig. figures

jjj89t'ji; it hink the answer is your mom is not si

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.