Compute the following: Number of moles of copper in 254 g of…

Compute the following: Number of moles of copper in 254 g of copper[moles] Mass of 0.050 mol of copper[grams1] Mass of 1.81×1024 atoms of copper[grams2] Number of moles of copper in 2 moles of Cu3(PO4)2 [moles2] Mass of 3.50 mol of Cu3(PO4)2 in grams[grams3]

A company that sprays chemicals in residences to eliminate o…

A company that sprays chemicals in residences to eliminate or prevent infestation of insects requires that customers prepay for 3 months’ service at the beginning of each new quarter. Which term appropriately describes the prepayment from the perspective of the service provider?