How many moles of water molecules are found in 3.80 moles of zinc(ii) sulfate heptahydrate?

Imagine that you own a property that is exactly 2.2 acres large. you want to sell your property, but your realtor tells you that you cannot sell your land by the acre. in order to sell your land you need to determine the area you own in units of square meters? given that there are 1.6 kilometers in 1 mile and 640 acres in 1 square mile, what is the area of land that you own in square meters square meters?

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?