Question

question
35 gigatons equals ________.
select the correct answer below:
o 3.5×10⁻⁹ tons
o 3.5×10⁻¹⁰ tons
o 3.5×10⁹ tons
o 3.5×10¹⁰ tons

Explanation:

Step1: Recall gigaton - ton conversion

1 gigaton = $10^{9}$ tons.

Step2: Convert 35 gigatons

35 gigatons = 35×$10^{9}$ tons.

Step3: Rewrite in scientific - notation

35×$10^{9}$ tons = 3.5×$10^{1}$×$10^{9}$ tons.
Using the rule $a^{m}×a^{n}=a^{m + n}$, we have 3.5×$10^{1 + 9}$ tons = 3.5×$10^{10}$ tons.

Answer:

3.5×$10^{10}$ tons (the last option)