Home
Class 10
CHEMISTRY
Calculate the mass of 1.51 xx 10 ^(23) ...

Calculate the mass of 1.51 `xx 10 ^(23)` molecule of `H_2O`.

Text Solution

Verified by Experts

`1.51 xx 10 ^(23)` molecules mass of `H_(2) O= 18`
Number of moles
`= (" Number of molecules of water ")/(" Avogadro's number ")`
`=(1.51xx 10^(23))/(6.023 xx 10 ^(23))=(1)/(4)=0.25 ` mole
Number of moles `=( "Mass ")/("Molarcular mass ")`
`=0.25 = mass //18`
Mass `= 0.25 xx18`
Mass `=4.5 g `
Promotional Banner

Topper's Solved these Questions

  • ATOMS AND MOLECULES

    SURA PUBLICATION|Exercise ADDITIONAL QUESTIONS & ANSWER ( CHOOSE THE CORRECT ANSWER ):|53 Videos

  • ATOMS AND MOLECULES

    SURA PUBLICATION|Exercise ADDITIONAL QUESTIONS & ANSWER ( FILL IN THE BLANKS ):|95 Videos

  • ATOMS AND MOLECULES

    SURA PUBLICATION|Exercise TEXTBOOK EVALUATION ( SOLVE THE FOLLOWING PROBLEMS ) :|7 Videos

  • CARBON AND ITS COMPOUNDS

    SURA PUBLICATION|Exercise ADDITIONAL QUESTION & ANSWER ( HIGHER ORDER THINKING SKILLS (HOTS) )|6 Videos

Similar Questions

Explore conceptually related problems

Calculate the number of moles in 1.51 xx10 ^(23) Molecules of NH_(4) Cl