Question

The following masses are written using metric prefixes on the gram. Rewrite them in scientific notation in terms of the SI base unit of mass: the kilogram. For example, 40 Mg would be written as 4×104kg.

(a) 23 mg;
(b) 320 Tg;
(c) 42 ng;
(d) 7 g;
(e) 9 Pg.

Answer 1

To rewrite masses in scientific notation in terms of the kilogram, convert the given masses to grams and then convert grams to kilograms.

Step-by-step explanation:

To rewrite masses in scientific notation in terms of the SI base unit of mass (kilogram), we need to convert the given masses to grams and then convert grams to kilograms.

(a) 23 mg = 2.3 x 10-5 kg

(b) 320 Tg = 3.2 x 1017 kg

(c) 42 ng = 4.2 x 10-14 kg

(d) 7 g = 0.007 kg

(e) 9 Pg = 9 x 1015 kg