1. How many moles of copper is 1.01x1024 atoms of Copper

Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)

How many grams of n2h4 will be consumed by 23 g of n2o4

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane