In chemistry class, Carlos calculated the number of molecules in 100 moles. The calculator displayed the number 6.0225. What is the number of molecules in 100 moles in scientific notation? (1 point)
O 6.02 × 25
O 25 × 108.02
O 6.02 + 1025
O 6.02 × 1025
The number of molecules in 100 moles can be represented as 6.02 × 10^25, which is option O 6.02 × 1025 in scientific notation.
To express the number of molecules in scientific notation, we need to move the decimal point to the right until there is only one digit to the left of the decimal point. In this case, there are already two digits to the left of the decimal point, so we need to move the decimal point 23 places to the right.
Therefore, the number of molecules in 100 moles in scientific notation is 6.02 × 10^23.
Therefore, the correct answer is O 6.02 × 10^25.
To convert a number to scientific notation, you need to move the decimal point so that there is only one digit to the left of the decimal point and multiply the number by the appropriate power of 10.
In this case, the calculator displayed the number 6.0225. To move the decimal point one place to the left, we get 0.60225.
Next, we count the number of places we moved the decimal point. Since we moved it one place to the left, the power of 10 is 1.
Finally, we express the number in scientific notation by multiplying 0.60225 by 10^1:
0.60225 × 10^1.
In scientific notation, this is written as 6.0225 × 10^0 (since 10^1 is equal to 10^0).
So, the correct answer option would be:
O 6.02 × 10^25.