Question

calculate the number of moles in 100 gram of iron and 100 gram of water. atomic mass of iron is 56u​

Answer 1

Answer:

No. of moles of Iron =1.785 moles

No. of moles of Water =5.5 moles

Explanation:

No. of moles of Iron = Given Mass/Molar mass

Therefore, N = 100/56

Therefore N = 1.785 moles

No. of moles of water = Given mass/Molar Mass

Therefore, N=100/18

Therefore, N=5.5 moles

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Answer 2

Answer:

Explanation:

56 g of iron contains 6.023*10^23 no. of moles.

or,100g of iron contain 1.07^24 no. of moles.

again,

18g of water contain 6.023*10^23 no. of moles.

or, 100g of water contains  3.334^24  no. of moles.