1. Determine the number of significant figures in the following measurements. a. 38.7 g 3 significant figures
b. 3 486 002 kg 7 significant figures
c. 0.00013 cm
d. 0.001400 g/L
e. 9 740 000 nm/s

2 and 4 and 3

Explanation:

in c. leading 0's are never significat. Numbers 1-9 are always significant.

d. leading 0's are never significant. numbers 1-9 are always significant. ending 0's are only significant when there is a decimal.

e. numbers 1-9 are always significant. 0's are not significant because there is no decimal.

1. they vary with a higher number because boiling is way hotter than melting