Antibodies combine with molecules which are called _____ .

A sample of pure lithium carbonate contains 44.3% lithium by mass. What is the % lithium by mass in a sample of pure lithium carbonate that has twice the mass of the first sample?

What volume of a 0.540 M KOH solution contains 15.5 g of KOH?

How many moles are in 2.75 g of ethylamine, CH3CH2NH2?

Identify one mole of a substance.

The compound, NO6, is named

How many milliliters of a 6.0 M HNO3 solution are needed to make 0.500 L of a 3.5 M HNO3 solution? Pay attention to units.

A student weighs out 14.9 mg of vanadium. How many moles are in the sample? Pay attention to units.

What is the concentration of HNO3 in the final solution when 70.0 mL of a 3.00 M HNO3 solution is diluted with pure water to a total volume of 0.15 L? Pay attention to units, mL vs. L

What is the molarity concentration of FeBr3 in a solution prepared by dissolving 10.0 g of FeBr3 in enough water to make 550 mL of solution?