Q1 Calculate the mass of 1*10^23 molecules of methane(C=12,H=1) Q2 calculate the no Of moles present in 0 25 - Science - Atoms and Molecules

Question

Q1 Calculate the mass of 1*10^23 molecules of methane(C=12,H=1)
Q2 calculate the no Of moles present in 0 25 moles of water
Q3 which has more no Of atoms – 100gms of silver or 100gms of
iron? (fe=56,ag=108)
Q4 how many atoms will be present in 0 05 moles of ozone?
(O=16)

Kanika Dalal · Accepted Answer

Dear student,

Please find below the solution to the query posted by you

You can use the following formulae to solve numericals like
these

1) Mass of given number of moleculesMass = Given number of moleculesNA×Molar mass2) Number of molecules = Moles × Molar mass3) Number of atoms = Given massAtomic mass×NA4) Number of atoms = Moles × NAwhere, NA = 6
02 × 1023
Hope this information will clear you doubt
regarding reactions of metals with acids

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Q1 Calculate the mass of 1*10^23 molecules of methane(C=12,H=1)Q2 calculate the no. Of moles present in 0.25 moles of water.Q3 which has more no. Of atoms – 100gms of silver or 100gms of iron? (fe=56,ag=108)Q4 how many atoms will be present in 0.05 moles of ozone? (O=16)

Q1 Calculate the mass of 1*10^23 molecules of methane(C=12,H=1)
Q2 calculate the no. Of moles present in 0.25 moles of water.
Q3 which has more no. Of atoms – 100gms of silver or 100gms of iron? (fe=56,ag=108)
Q4 how many atoms will be present in 0.05 moles of ozone? (O=16)