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Calculate the mass of potassium

I need help with these questions1. Calculate the percentage by mass of potassium in potassium sulfate K2 SO4 2. calculate the
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2. asked by Victoria
3. 923 views
Potassium has an atomic mass of 39.10amu. a sample of potassium is made up of isotopes potassium-39 (mass=38.964) and
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2. asked by Skylar
3. 900 views
Potassium sulphate and water are produced from the neutralisation reaction of sulphuric acid and potassium hydroxidea)Write
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2. asked by Azuwa
3. 418 views
Calculate the number of potassium ions present in 7.45g of potassium oxide (atomic mass of K=39u)?
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2. asked by For St Joseph School,Imphal,Sagaiprou
3. 898 views
8.4 g of a mixture of potassium hydroxide and potassium chloride were made up of 1 litre of aqueous solution. 20 cm of this
1. 2 answers
2. asked by Doris
3. 681 views
Calculate the mass of salts needed for constructing a buffer using potassium monobasic phosphate and potassium dibasic phosphate
1. 4 answers
2. asked by dave
3. 818 views
A 0.8870-g mixture of sodium chloride and potassium chloride is dissolved in water and silver nitrate is added. The AgCl that
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2. asked by Ethan
3. 2,323 views
calculate the mass of potassium hydrogen phthalate needed to prepare a 0.1M solution in a 250 ml volumetric flask given that the
1. 3 answers
2. asked by Sam
3. 6,038 views
The mole fraction of an aqueous solution of potassium perchlorate is 0.125. Assuming that the density of this solution is 1.20g
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2. asked by Lori
3. 797 views
8.4g of a mixture of potassium hydroxide and potassium chloride were made up to 1litre of aqueous solution 20cm3 of this
1. 1 answer
2. asked by Fatuma
3. 400 views