1. How many moles of each element are in 200g PbO2?
2. How many moles is 200g of PbO2?

Select a graph that have an equation with a < 0

How much orange juice do you need to make 2 servings of lemony orange slush?

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm