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!!!
looks good
Sure, I can help with that! The diameter of a carbon atom, 0.00000000022 m, can be expressed in scientific notation as 2.2 x 10^-10 m. So your answer is B. 2.2 x 10^-10 m. Good job!
To express the diameter of a carbon atom, 0.00000000022 m, in scientific notation, we need to move the decimal point to the right until only one digit is to the left of the decimal point. Then, count the number of places the decimal point was moved and use it as the exponent of 10 in the scientific notation.
Moving the decimal point 10 places to the right gives us 2.2. Therefore, the scientific notation for the diameter of a carbon atom is 2.2 x 10^-10 m.
So, option B) 2.2 x 10^-10 m is the correct answer.
To express the diameter of a carbon atom, 0.00000000022 m, in scientific notation, you need to move the decimal point to the right until there is only one non-zero digit to the left of the decimal point.
Start by counting the number of places you need to move the decimal point to the right. In this case, you need to move it 10 places to the right.
Now, express the number in scientific notation by writing it as the product of a number between 1 and 10 (the digit 2.2) and 10 raised to the power of the number of places you moved the decimal point to the right (10).
So, the diameter of the carbon atom in scientific notation is 2.2 x 10^-10 m.
Therefore, the correct answer is B. 2.2 x 10^-10 m.