25,3 moles of potassium sulfate hva a mass of 4,4409 kg.
4,12 grams aluminum sulfate is equivalent to 0,012 moles (for the anhydrous salt).
The answer is 32,4.10e23.
45/94.2 is 0.4777 moles
3.6 moles N2SO4 (142.05 grams/1 mole Na2SO4) = 511.38 grams Na2SO4 ==================( you do significant figures )
The atomic mass of Potassium is 39 and that of Sulfur 32. The formula for Potassium Sulfide is K2S therefore the molecular weight of Potassium Sulfide is (39 * 2) + 32 = 110. Therefore one mole of Potassium Sulfide weighs 110 grams. Therefore 3.3 moles of Potassium Sulfide weigh 110 * 3.3 = 363 grams.
You have to use the equationnumber of moles = mass/Molar massn = 5/(39.1+32.1+64)n = 5/135.2number of moles = 0.04:)
4,12 grams aluminum sulfate is equivalent to 0,012 moles (for the anhydrous salt).
The answer is 32,4.10e23.
34,7 moles of potassium 1 356,7 g.
You did not describe the amount of potassium bicarbonate amount in grams in your question. But if you are about 1 gram of potassium bicarbonate it will be 0.0099 moles in one gram of potassium bicarbonate. 0.0199 moles in 2 grams of potassium bicarbonate.
224 g are in two moles of potassium dichromate.
45/94.2 is 0.4777 moles
In one mole of potassium dichromate, there seven moles of oxygen. This means in two moles of K2Cr2O7, there are 14 moles of O, or 7 Moles of O2, which equals 224 grams.
3.99 or 4
About 0.013
3.6 moles N2SO4 (142.05 grams/1 mole Na2SO4) = 511.38 grams Na2SO4 ==================( you do significant figures )
224 grams of Oxygen will be in 2 moles of Potassium dichromate.