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How many molecules are in 84.0 g of C5H5N

Sagot :

To solve this you want to divide 84.0g by the molar mass of C5H5N. To find the molar mass of it you add the molar masses of each one like this: 5(M of C) + 5(M of H) + (M of N). Then you mulitply the number you get from the division by 6.022 * 10^23. That will be the number of molecules