Calculate the molarity of a solution that contains 15.7 g of CaCO3 dissolved in enough water to make 275 mL of solution.

Question 4 How many moles of solute are needed for 2.0 L of a 0.10 M solution of MgCl2?

Molecular formula of WO2?

How many atoms and elements are there in C2H5OH

List an example of each of the four classes of polymers that living things make and use

Diatomic hydrogen gas and diatomic nitrogen gas react spontaneously to form a gaseous product. Give the balanced chemical equation (including phases) that describes this reaction

Who first established the heliocentric view

If measurements of a gas are 75l and 300 kilopascals and then the gas is measured a second Time and found to be 50L describe what had to happen to the pressure

The neritic zone is also called the: a. Intertidal zone c. Eutrophic zone b. Bathyal zone d. Subtidal zone

How many moles of liquid water must freeze to remove 100 kJ of heat? (ΔHf = - 334 J/ g.

What is the power of a kitchen blender if it can perform 3750 joules of work in 15 seconds?