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Help me on chemistry hmk + working out please

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1. A piece of zinc was added o 50.0cm^3 of 2.00 mol dm-3 sulfuric acid (an excess). The zinc reacted according to the equation:

Zn + H2SO4 ---> ZnSO4 + H2

The remaining sulfuric acid required 27.50cm^3 of 0.200 mol dm-3 sodium hydroxide for neutralisation.

2NaOH + H2SO4 ---> Na2SO4 + H2O

1) Calculate the number of moles in 50.0cm^3 of 2.00 mol dm-3 sulfuric acid
2)Calculate the number of moles in 27.50cm^3 of 0.200 mol dm-3 of sodium hydroxide
3) use the second equation to calculate the number of moles of sulfuric acid remaining after the reaction with zinc
4) Use your answer from parts (1) and (3) to calculate the number of moles of sulfuric acid which reacted with the zinc
5) Hence calculate the mass of zinc that reacted
2. If you can't do parts 1 or 2, you won't be able to do the rest at all. Go and learn it, then come back and say what you've tried.
3. (Original post by mandeep_nagra)
A piece of zinc was added o 50.0cm^3 of 2.00 mol dm-3 sulfuric acid (an excess). The zinc reacted according to the equation:

Zn + H2SO4 ---> ZnSO4 + H2

The remaining sulfuric acid required 27.50cm^3 of 0.200 mol dm-3 sodium hydroxide for neutralisation.

2NaOH + H2SO4 ---> Na2SO4 + H2O

1) Calculate the number of moles in 50.0cm^3 of 2.00 mol dm-3 sulfuric acid
2)Calculate the number of moles in 27.50cm^3 of 0.200 mol dm-3 of sodium hydroxide
3) use the second equation to calculate the number of moles of sulfuric acid remaining after the reaction with zinc
4) Use your answer from parts (1) and (3) to calculate the number of moles of sulfuric acid which reacted with the zinc
5) Hence calculate the mass of zinc that reacted
Hint: Use n= c x v
4. (Original post by richardhello)
If you can't do parts 1 or 2, you won't be able to do the rest at all. Go and learn it, then come back and say what you've tried.
Ive done part a and b i just need to make sure i got the answers right because i got the answer 1/10 for part 1 and 5.5*10-3 - but im not sure if their right?

Im stuck on how to do the rest of it if you can just at least tell me with the method of how to do it i will be able to do it.

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