The following reaction shows sodium hydroxide reacting with sulfuric acid.

4naoh + 2h2so4 → 2na2so4 + 4h2o

how many grams of na2so4 are produced from 10.0 grams of naoh?

(molar mass of na = 22.989 g/mol, o = 15.999 g/mol, h = 1.008 g/mol, s = 32.065 g/mol)
17.8 grams
19.2 grams
35.5 grams
38.5 grams

Astudent is given a sample of a blue copper sulfate hydrate. he weighs the sample in a dry covered porcelain crucible and got a mass of 23.875 g for the crucible, lid, and sample. the mass of the empty crucible and lid was found earlier to be 22.652 g. he then heats the crucible to expel the water of hydration, keeping the crucible at red heat for 10 minutes with the lid slightly ajar. on colling, he finds the mass of crucible, lid, and contents to be 23.403 g. the sample was changed in the process to very light clue anhydrous cuso4. if there are again 100.0 g of hydrate, how many grams of cuso4 are in it? how many moles of cuso4? (hint: molar mass of cuso4 = 159.6 g / mole. what per cent of the hydrate is cuso4? you may convert the mass of cuso4 to moles.)

What is the molar mass of potassium nitrate, kno3

What is the most important factor in determining climates.