Common-Core/ Grade 10
Science MCQ Based On Calculate the amount of substance in moles
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Common-Core Grade 10 - 10 Calculate the amount of substance in moles
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Check the options first.
Recall the formula of each given option.
Check which depends on the mass of the solvent.
Atomic mass of potassium is 39.
Chemical formula of sucrose is C12H22O11.
Mass percentage= \\(mass of solute\\div mass of solution\\times100\\)
Molar mass of Helium gas is 4g/mol.
Mass/mass%= \\(Mass of solute\\div Mass of solutions\\times100\\)
Recall one mol of Na2O.
Molar mass of O2 is 32g.
1 mole contains \\(6.022\\times10^23\\).
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