Acertain ore is 33.0% nickel by mass. how many kilograms of this ore would you need to dig up to have 45.0 g of nickel?

How many moles of gas are present if p=11 atm, v=12l, t=185k?

Calculate the molarity of each of the following solutions. part a) 0.12 mol of lino3 in 5.5 l of solution part b) 60.7 g c2h6o in 2.48 l of solution part c) 14.2 mg ki in 100 ml of solution

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?