Express the diameter of a carbon atom, 0.00000000022 m, in scientific notation.
A. 0.22 x 10^-9 m
B. 2.2 x 10^-10 m
C. 2.2 x 10^-9 m ***
D. 22 x 10^-11 m
I'm not sure. Can someone please check? Thank you!! I need someone to check just really quick thank you so much
Disagree. Count the number of zeros to get to your value.
Is it B?
yes, move decimal point right ten to get one non-zero digit left of decimal point.
To express a number in scientific notation, you need to move the decimal point to the right or left to create a number between 1 and 10, and then multiply it by a power of 10.
In the given question, the diameter of a carbon atom is given as 0.00000000022 m. To express this in scientific notation, we need to move the decimal point to create a number between 1 and 10.
In this case, we can move the decimal point 10 places to the right to get 2.2, resulting in the number 2.2 x 10^-10 m.
Therefore, the correct answer is B. 2.2 x 10^-10 m.
I hope this explanation helps!