In chemistry class, Carlos calculated the number of molecules in 100 molecules. The calculator displayed the number 6.02E25. What is the number of molecules in 100 molecules in scientific notation?
a 6.02 x 10^25
b 6.02 + 10^25
c 6.02 x 24
d 25 x 10^6.02
The correct answer is a) 6.02 x 10^25.
The number of molecules in 100 molecules, as calculated by Carlos as 6.02E25, can be written in scientific notation as 6.02 x 10^25. Therefore, the correct answer is option a: 6.02 x 10^25.
To find the number of molecules in 100 molecules in scientific notation, we can refer to the given calculator display result, which is 6.02E25.
In scientific notation, the number before "E" represents the significant digits, and the number after "E" represents the power of 10 by which the decimal point should be moved.
In this case, the number before "E" is 6.02, which serves as the significant digits. The number after "E" is 25, which indicates the power of 10.
Therefore, the number of molecules in 100 molecules in scientific notation is 6.02 x 10^25.
So, the correct answer is option a) 6.02 x 10^25.