One Mole of a Substance Contains 6

question 46

Multiple Choice

One mole of a substance contains 6.02 x 10²³ molecules.The atomic number of Li is 3 and the atomic mass is approximately 7.If you have three moles of Li, how many grams does it weigh?

• A)9
• B)21
• C)7 x 6.02 x 10²³
• D)3 x 6.02 x 10²³

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