How many moles of magnesium oxide are there in 2.50 * 10^25 formula units of MgO?

Which properties describe water? strong surface tension, weak surface tension, denser as a solid, denser as a liquid, nonpolar, polar, covalent bonds, or ionic bonds

What are the physical properties of liquid bleach

A plant grows three inches in a month. Why is this a physical change?

Which of the following elements in the periodic table have nonmetallic properties

A gas occupies 100.0mL at a pressure of 780 mm hg. What is the volume of the gas when its pressure is increased to 880 mm hg

How many moles of neon (Ne, 20.179 g/mol) are in 68.4 grams of neon

A 50.00 mL sample of groundwater is titrated with 0.0300 M EDTA. Of 12.40 mL of EDTA is required to titrate the 50.00 mL sample, what is the hardness of the groundwater in molarity and in parts per million of CaCO 3 by mass

Why openness is important to the progress of science?

At a certain temperature the rate of this reaction is second order in NH4OH with a rate constant of 34.1 M^-1s^-1: Suppose a vessel contains NH4OH at a concentration of 0.100M.

If you go into the lab and dissolve 2.11 g of magnesium chloride in enough water to make 1500 ml of solution, what is the molarity of the resulting solution?