How to find number of moles if only Molar mass is given? (mass is not given; n=m/M)

If the pOH of a solution os 3.9, solve for the following: pH= H-= OH-= Is the solution an acid or base?

Explain what air is, where on Earth it occurs, and how it moves to create wind.

If one wished to obtain 0.15 moles of glacial acetic acid, how many milliliters of glacial acetic acid should be obtained? Enter only the number with two significant figures.

How many moles of ZnCl, will be produced from 23.0 g of Zn, assuming CuCl, is available in excess?

What percentage of the total net electricity generated in America each day is represented by coal?

What is the coefficient for hydrogen in the balanced equation for the reaction of solid molybdenum (iv) oxide with gaseous hydrogen to form solid molybdenum and liquid water?

Mixture's and solutions

What is half-life? a.) the time it takes for a radioactive atom to lose half its electrons b.) the time it takes for half of any number of radioactive atoms to decay c.) the average time it takes for any element to disappear completely d.

Water molecules are made of slightly positively charged hydrogen atoms and slightly negatively charged oxygen atoms. which force keeps water molecules stuck to one another?

Which can be used to prevent initial entry of bacteria into the body