Mole Concept and Molar Mass
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306721 How many moles of \(A{l_2}{\left( {S{O_4}} \right)_3}\) would be in 50 g of the substance?

1 0.083 mole
2 0.952 mole
3 0.481 mole
4 0.140 mole
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306722 What is the volume (in \(\mathrm{\mathrm{dm}^{3}}\) ) occupied by \(\mathrm{75 \mathrm{~g}}\) ethane at S.T.P?

1 60.0
2 56.0
3 22.4
4 44.8
MHTCET - 2021
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306724 1 mol of \({\rm{C}}{{\rm{H}}_{\rm{4}}}\) contains same number of molecules as that of

1 \({\rm{6}}{\rm{.02 \times 1}}{{\rm{0}}^{{\rm{23}}}}\) atoms of H
2 4 g atoms of hydrogen
3 \({\rm{1}}{\rm{.81 \times 1}}{{\rm{0}}^{{\rm{23}}}}\) molecules of \({\rm{C}}{{\rm{H}}_{\rm{4}}}\)
4 3.0 g of carbon
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306725 How many moles of magnesium phosphate \({\rm{M}}{{\rm{g}}_{\rm{3}}}{\left( {{\rm{P}}{{\rm{O}}_{\rm{4}}}} \right)_{\rm{2}}}\) will contain 0.25 mole of oxygen atoms?

1 0.02
2 \({\rm{3}}{\rm{.125 \times 1}}{{\rm{0}}^{{\rm{ - 2}}}}\)
3 \({\rm{1}}{\rm{.25 \times 1}}{{\rm{0}}^{{\rm{ - 2}}}}\)
4 \({\rm{2}}{\rm{.5 \times 1}}{{\rm{0}}^{{\rm{ - 2}}}}\)
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306721 How many moles of \(A{l_2}{\left( {S{O_4}} \right)_3}\) would be in 50 g of the substance?

1 0.083 mole
2 0.952 mole
3 0.481 mole
4 0.140 mole
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306722 What is the volume (in \(\mathrm{\mathrm{dm}^{3}}\) ) occupied by \(\mathrm{75 \mathrm{~g}}\) ethane at S.T.P?

1 60.0
2 56.0
3 22.4
4 44.8
MHTCET - 2021
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306724 1 mol of \({\rm{C}}{{\rm{H}}_{\rm{4}}}\) contains same number of molecules as that of

1 \({\rm{6}}{\rm{.02 \times 1}}{{\rm{0}}^{{\rm{23}}}}\) atoms of H
2 4 g atoms of hydrogen
3 \({\rm{1}}{\rm{.81 \times 1}}{{\rm{0}}^{{\rm{23}}}}\) molecules of \({\rm{C}}{{\rm{H}}_{\rm{4}}}\)
4 3.0 g of carbon
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306725 How many moles of magnesium phosphate \({\rm{M}}{{\rm{g}}_{\rm{3}}}{\left( {{\rm{P}}{{\rm{O}}_{\rm{4}}}} \right)_{\rm{2}}}\) will contain 0.25 mole of oxygen atoms?

1 0.02
2 \({\rm{3}}{\rm{.125 \times 1}}{{\rm{0}}^{{\rm{ - 2}}}}\)
3 \({\rm{1}}{\rm{.25 \times 1}}{{\rm{0}}^{{\rm{ - 2}}}}\)
4 \({\rm{2}}{\rm{.5 \times 1}}{{\rm{0}}^{{\rm{ - 2}}}}\)
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306721 How many moles of \(A{l_2}{\left( {S{O_4}} \right)_3}\) would be in 50 g of the substance?

1 0.083 mole
2 0.952 mole
3 0.481 mole
4 0.140 mole
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306722 What is the volume (in \(\mathrm{\mathrm{dm}^{3}}\) ) occupied by \(\mathrm{75 \mathrm{~g}}\) ethane at S.T.P?

1 60.0
2 56.0
3 22.4
4 44.8
MHTCET - 2021
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306724 1 mol of \({\rm{C}}{{\rm{H}}_{\rm{4}}}\) contains same number of molecules as that of

1 \({\rm{6}}{\rm{.02 \times 1}}{{\rm{0}}^{{\rm{23}}}}\) atoms of H
2 4 g atoms of hydrogen
3 \({\rm{1}}{\rm{.81 \times 1}}{{\rm{0}}^{{\rm{23}}}}\) molecules of \({\rm{C}}{{\rm{H}}_{\rm{4}}}\)
4 3.0 g of carbon
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306725 How many moles of magnesium phosphate \({\rm{M}}{{\rm{g}}_{\rm{3}}}{\left( {{\rm{P}}{{\rm{O}}_{\rm{4}}}} \right)_{\rm{2}}}\) will contain 0.25 mole of oxygen atoms?

1 0.02
2 \({\rm{3}}{\rm{.125 \times 1}}{{\rm{0}}^{{\rm{ - 2}}}}\)
3 \({\rm{1}}{\rm{.25 \times 1}}{{\rm{0}}^{{\rm{ - 2}}}}\)
4 \({\rm{2}}{\rm{.5 \times 1}}{{\rm{0}}^{{\rm{ - 2}}}}\)
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306721 How many moles of \(A{l_2}{\left( {S{O_4}} \right)_3}\) would be in 50 g of the substance?

1 0.083 mole
2 0.952 mole
3 0.481 mole
4 0.140 mole
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306722 What is the volume (in \(\mathrm{\mathrm{dm}^{3}}\) ) occupied by \(\mathrm{75 \mathrm{~g}}\) ethane at S.T.P?

1 60.0
2 56.0
3 22.4
4 44.8
MHTCET - 2021
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306724 1 mol of \({\rm{C}}{{\rm{H}}_{\rm{4}}}\) contains same number of molecules as that of

1 \({\rm{6}}{\rm{.02 \times 1}}{{\rm{0}}^{{\rm{23}}}}\) atoms of H
2 4 g atoms of hydrogen
3 \({\rm{1}}{\rm{.81 \times 1}}{{\rm{0}}^{{\rm{23}}}}\) molecules of \({\rm{C}}{{\rm{H}}_{\rm{4}}}\)
4 3.0 g of carbon
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306725 How many moles of magnesium phosphate \({\rm{M}}{{\rm{g}}_{\rm{3}}}{\left( {{\rm{P}}{{\rm{O}}_{\rm{4}}}} \right)_{\rm{2}}}\) will contain 0.25 mole of oxygen atoms?

1 0.02
2 \({\rm{3}}{\rm{.125 \times 1}}{{\rm{0}}^{{\rm{ - 2}}}}\)
3 \({\rm{1}}{\rm{.25 \times 1}}{{\rm{0}}^{{\rm{ - 2}}}}\)
4 \({\rm{2}}{\rm{.5 \times 1}}{{\rm{0}}^{{\rm{ - 2}}}}\)
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