Calculate the number of mol of solute in 8.00 * 102 mL of 0.250 M HCl.

363 mL of a solution of NaOH is diluted to a final of 1400mL and and the new molarity is 0.286 calculate the original molarity of the base Report your answer with 4 decimal places

How many electrons does fluorine have? How many electron shells? How many electrons are needed to fill the valence shell?

Which formula represents a hydronium ion? (1) H3O + (3) OH- (2) NH4 + (4) HCO3-

Write the chemical symbol for the ion with 95 protons and 89 electrons.

Why can't we carry an umbrella during lighting?

What typefs) of bonding would be expected for each of the following materials: solid xenon, calcium fluoride (CaF, bronze, cadmium telluride (CdTe), rubber, and tungsten?

A balloon filled with helium occupies 20.0 l at 1.50 atm and 25.0◦c. How many moles of helium will there be in the balloon at stp?

How many joules are in 148 calories? (hint: 1 cal = 4.18 j)

Which factor most directly affects potential energy?

Using John daltons method, what's the ratio of the chemical compound of Salt - NaC1