The width of a DNA molecule is about 2.5 nanometers. A nanometer is 0.000000001 meter. What is the width of a DNA molecule in scientific notation
well 0.000000001 = 1.0 x 10^-9, (I counted 9 moves of the decimal place.)
so 2.5(1.0 x 10^-9) = .....
0.000000001.
To express the width of a DNA molecule in scientific notation, we will convert the value to a number between 1 and 10 and multiply it by a power of 10.
The width of a DNA molecule is 2.5 nanometers, which is 2.5 × 10^-9 meters.
Therefore, the width of a DNA molecule in scientific notation is 2.5 × 10^-9 meters.
To express the width of a DNA molecule in scientific notation, we need to convert 2.5 nanometers into a number between 1 and 10, multiplied by a power of 10.
Given that a nanometer is 0.000000001 meter, we can write 2.5 nanometers as:
2.5 x 0.000000001 meters
This can be simplified by multiplying the two values together:
2.5 x 0.000000001 = 0.0000000025
Now we can write this in scientific notation by moving the decimal point to the right until we have a number between 1 and 10:
0.0000000025 = 2.5 x 10^-9
Thus, the width of a DNA molecule in scientific notation is 2.5 x 10^-9 meters.