Question

question 6 (1 point) express 23400 in correct scientific notation. a 2.34 x 10^4 b 2.3 x 10^3 c 2.30 x 10^5 d 2.34 x 10^3 question 7 (1 point) the diameter of a carbon atom is 0.000 000 000 154 m. what is this number expressed in scientific notation? a 1.54 x 10^12 m b 1.54 x 10^-12 m c 1.54 x 10^10 m d 1.54 x 10^-10 m

Explanation:

Step1: Recall scientific - notation form

Scientific notation is $a\times10^{n}$, where $1\leqslant|a|\lt10$ and $n$ is an integer.

Step2: Solve for 23400

Move the decimal point 4 places to the left to get $a = 2.34$ and $n=4$. So, $23400=2.34\times 10^{4}$.

Step3: Solve for 0.000000000154

Move the decimal point 10 places to the right to get $a = 1.54$ and $n=- 10$. So, $0.000000000154=1.54\times10^{-10}$.

Answer:

Question 6: A. $2.34\times 10^{4}$
Question 7: D. $1.54\times 10^{-10}$