Molar mass of \({\mathrm{\mathrm{CH}_{4}=16 \mathrm{~g} / \mathrm{mol}}}\) Electrons in a molecule of \({\mathrm{\mathrm{CH}_{4}=6+(1 \times 4)=10}}\) \({\text{16}}\;{\text{g}}\) of \({\text{C}}{{\text{H}}_{\text{4}}}\) contains \({\mathrm{=10 \times 6.023 \times 10^{23}}}\)electrons \({\mathrm{=60.2 \times 10^{23}}}\) electrons so, (A - Q) One mole or 2 g of hydrogen gas occupies 22.4 L volume at STP . \({\mathrm{\therefore 1 \mathrm{~g}}}\) of \({\mathrm{\mathrm{H}_{2}}}\) gas occupies \({\mathrm{\dfrac{22.4}{2}=11.2 \mathrm{~L}}}\) volume at STP (B – S) 1 mole of \({\mathrm{\mathrm{N}_{2}}}\) gas weighs 28 g . (C- P ) 1 mol of \({\mathrm{\mathrm{SO}_{2}}}\) gas weighs 64 g \({\kern 1pt} \therefore 0.5\;\,{\rm{mol}}\) of gas weighs \({\mathrm{\dfrac{64}{2}=32 \mathrm{~g}(\mathrm{D}-\mathrm{R})}}\)
JEE - 2023
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306717
10 grams of each \(\mathrm{\mathrm{O}_{2}, \mathrm{~N}_{2}}\) and \(\mathrm{\mathrm{Cl}_{2}}\) are kept in three bottles. The correct order of arrangement of bottles containing decreasing number of molecules is
1 mole means \(\mathrm{6.02 \times 10^{23}}\) molecules \(\mathrm{\therefore}\) No. of molecules \(\mathrm{\propto}\) no. of moles no. of moles \(\mathrm{=\dfrac{\text { mass }}{\text { molar mass }}}\) Here no. of moles \(\mathrm{=\mathrm{n}_{\mathrm{N}_{2}}>\mathrm{n}_{\mathrm{O}_{2}}>\mathrm{n}_{\mathrm{Cl}_{2}}}\) (as the given masses are same)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306718
The number of oxygen atoms present in \(\mathrm{14.6 \mathrm{~g}}\) of magnesium bicarbonate is:
1 \(\mathrm{6 \mathrm{~N}_{\mathrm{A}}}\)
2 \(\mathrm{0.6 \mathrm{~N}_{\mathrm{A}}}\)
3 \(\mathrm{\mathrm{N}_{\mathrm{A}}}\)
4 \(\mathrm{\dfrac{\mathrm{N}_{\mathrm{A}}}{2}}\)
Explanation:
Magnesium bicarbonate, \(\mathrm{\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2}}\), molar mass is \(\mathrm{146 \mathrm{~g} / \mathrm{mole}}\). \(\mathrm{146 \mathrm{~g}}\) of \(\mathrm{\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2}}\) contains 6 mole oxygen atoms. \(\mathrm{14.6 \mathrm{~g}}\) of \(\mathrm{\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2}}\) contains ? \(\mathrm{=\dfrac{14.6 \times 6}{146}=0.6 \mathrm{~mole}=0.6 \mathrm{~N}_{\mathrm{A}}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306719
In which of the following pairs do 1 g of each have an equal number of molecules?
Molar mass of \({\mathrm{\mathrm{CH}_{4}=16 \mathrm{~g} / \mathrm{mol}}}\) Electrons in a molecule of \({\mathrm{\mathrm{CH}_{4}=6+(1 \times 4)=10}}\) \({\text{16}}\;{\text{g}}\) of \({\text{C}}{{\text{H}}_{\text{4}}}\) contains \({\mathrm{=10 \times 6.023 \times 10^{23}}}\)electrons \({\mathrm{=60.2 \times 10^{23}}}\) electrons so, (A - Q) One mole or 2 g of hydrogen gas occupies 22.4 L volume at STP . \({\mathrm{\therefore 1 \mathrm{~g}}}\) of \({\mathrm{\mathrm{H}_{2}}}\) gas occupies \({\mathrm{\dfrac{22.4}{2}=11.2 \mathrm{~L}}}\) volume at STP (B – S) 1 mole of \({\mathrm{\mathrm{N}_{2}}}\) gas weighs 28 g . (C- P ) 1 mol of \({\mathrm{\mathrm{SO}_{2}}}\) gas weighs 64 g \({\kern 1pt} \therefore 0.5\;\,{\rm{mol}}\) of gas weighs \({\mathrm{\dfrac{64}{2}=32 \mathrm{~g}(\mathrm{D}-\mathrm{R})}}\)
JEE - 2023
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306717
10 grams of each \(\mathrm{\mathrm{O}_{2}, \mathrm{~N}_{2}}\) and \(\mathrm{\mathrm{Cl}_{2}}\) are kept in three bottles. The correct order of arrangement of bottles containing decreasing number of molecules is
1 mole means \(\mathrm{6.02 \times 10^{23}}\) molecules \(\mathrm{\therefore}\) No. of molecules \(\mathrm{\propto}\) no. of moles no. of moles \(\mathrm{=\dfrac{\text { mass }}{\text { molar mass }}}\) Here no. of moles \(\mathrm{=\mathrm{n}_{\mathrm{N}_{2}}>\mathrm{n}_{\mathrm{O}_{2}}>\mathrm{n}_{\mathrm{Cl}_{2}}}\) (as the given masses are same)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306718
The number of oxygen atoms present in \(\mathrm{14.6 \mathrm{~g}}\) of magnesium bicarbonate is:
1 \(\mathrm{6 \mathrm{~N}_{\mathrm{A}}}\)
2 \(\mathrm{0.6 \mathrm{~N}_{\mathrm{A}}}\)
3 \(\mathrm{\mathrm{N}_{\mathrm{A}}}\)
4 \(\mathrm{\dfrac{\mathrm{N}_{\mathrm{A}}}{2}}\)
Explanation:
Magnesium bicarbonate, \(\mathrm{\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2}}\), molar mass is \(\mathrm{146 \mathrm{~g} / \mathrm{mole}}\). \(\mathrm{146 \mathrm{~g}}\) of \(\mathrm{\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2}}\) contains 6 mole oxygen atoms. \(\mathrm{14.6 \mathrm{~g}}\) of \(\mathrm{\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2}}\) contains ? \(\mathrm{=\dfrac{14.6 \times 6}{146}=0.6 \mathrm{~mole}=0.6 \mathrm{~N}_{\mathrm{A}}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306719
In which of the following pairs do 1 g of each have an equal number of molecules?
Molar mass of \({\mathrm{\mathrm{CH}_{4}=16 \mathrm{~g} / \mathrm{mol}}}\) Electrons in a molecule of \({\mathrm{\mathrm{CH}_{4}=6+(1 \times 4)=10}}\) \({\text{16}}\;{\text{g}}\) of \({\text{C}}{{\text{H}}_{\text{4}}}\) contains \({\mathrm{=10 \times 6.023 \times 10^{23}}}\)electrons \({\mathrm{=60.2 \times 10^{23}}}\) electrons so, (A - Q) One mole or 2 g of hydrogen gas occupies 22.4 L volume at STP . \({\mathrm{\therefore 1 \mathrm{~g}}}\) of \({\mathrm{\mathrm{H}_{2}}}\) gas occupies \({\mathrm{\dfrac{22.4}{2}=11.2 \mathrm{~L}}}\) volume at STP (B – S) 1 mole of \({\mathrm{\mathrm{N}_{2}}}\) gas weighs 28 g . (C- P ) 1 mol of \({\mathrm{\mathrm{SO}_{2}}}\) gas weighs 64 g \({\kern 1pt} \therefore 0.5\;\,{\rm{mol}}\) of gas weighs \({\mathrm{\dfrac{64}{2}=32 \mathrm{~g}(\mathrm{D}-\mathrm{R})}}\)
JEE - 2023
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306717
10 grams of each \(\mathrm{\mathrm{O}_{2}, \mathrm{~N}_{2}}\) and \(\mathrm{\mathrm{Cl}_{2}}\) are kept in three bottles. The correct order of arrangement of bottles containing decreasing number of molecules is
1 mole means \(\mathrm{6.02 \times 10^{23}}\) molecules \(\mathrm{\therefore}\) No. of molecules \(\mathrm{\propto}\) no. of moles no. of moles \(\mathrm{=\dfrac{\text { mass }}{\text { molar mass }}}\) Here no. of moles \(\mathrm{=\mathrm{n}_{\mathrm{N}_{2}}>\mathrm{n}_{\mathrm{O}_{2}}>\mathrm{n}_{\mathrm{Cl}_{2}}}\) (as the given masses are same)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306718
The number of oxygen atoms present in \(\mathrm{14.6 \mathrm{~g}}\) of magnesium bicarbonate is:
1 \(\mathrm{6 \mathrm{~N}_{\mathrm{A}}}\)
2 \(\mathrm{0.6 \mathrm{~N}_{\mathrm{A}}}\)
3 \(\mathrm{\mathrm{N}_{\mathrm{A}}}\)
4 \(\mathrm{\dfrac{\mathrm{N}_{\mathrm{A}}}{2}}\)
Explanation:
Magnesium bicarbonate, \(\mathrm{\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2}}\), molar mass is \(\mathrm{146 \mathrm{~g} / \mathrm{mole}}\). \(\mathrm{146 \mathrm{~g}}\) of \(\mathrm{\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2}}\) contains 6 mole oxygen atoms. \(\mathrm{14.6 \mathrm{~g}}\) of \(\mathrm{\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2}}\) contains ? \(\mathrm{=\dfrac{14.6 \times 6}{146}=0.6 \mathrm{~mole}=0.6 \mathrm{~N}_{\mathrm{A}}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306719
In which of the following pairs do 1 g of each have an equal number of molecules?
Molar mass of \({\mathrm{\mathrm{CH}_{4}=16 \mathrm{~g} / \mathrm{mol}}}\) Electrons in a molecule of \({\mathrm{\mathrm{CH}_{4}=6+(1 \times 4)=10}}\) \({\text{16}}\;{\text{g}}\) of \({\text{C}}{{\text{H}}_{\text{4}}}\) contains \({\mathrm{=10 \times 6.023 \times 10^{23}}}\)electrons \({\mathrm{=60.2 \times 10^{23}}}\) electrons so, (A - Q) One mole or 2 g of hydrogen gas occupies 22.4 L volume at STP . \({\mathrm{\therefore 1 \mathrm{~g}}}\) of \({\mathrm{\mathrm{H}_{2}}}\) gas occupies \({\mathrm{\dfrac{22.4}{2}=11.2 \mathrm{~L}}}\) volume at STP (B – S) 1 mole of \({\mathrm{\mathrm{N}_{2}}}\) gas weighs 28 g . (C- P ) 1 mol of \({\mathrm{\mathrm{SO}_{2}}}\) gas weighs 64 g \({\kern 1pt} \therefore 0.5\;\,{\rm{mol}}\) of gas weighs \({\mathrm{\dfrac{64}{2}=32 \mathrm{~g}(\mathrm{D}-\mathrm{R})}}\)
JEE - 2023
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306717
10 grams of each \(\mathrm{\mathrm{O}_{2}, \mathrm{~N}_{2}}\) and \(\mathrm{\mathrm{Cl}_{2}}\) are kept in three bottles. The correct order of arrangement of bottles containing decreasing number of molecules is
1 mole means \(\mathrm{6.02 \times 10^{23}}\) molecules \(\mathrm{\therefore}\) No. of molecules \(\mathrm{\propto}\) no. of moles no. of moles \(\mathrm{=\dfrac{\text { mass }}{\text { molar mass }}}\) Here no. of moles \(\mathrm{=\mathrm{n}_{\mathrm{N}_{2}}>\mathrm{n}_{\mathrm{O}_{2}}>\mathrm{n}_{\mathrm{Cl}_{2}}}\) (as the given masses are same)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306718
The number of oxygen atoms present in \(\mathrm{14.6 \mathrm{~g}}\) of magnesium bicarbonate is:
1 \(\mathrm{6 \mathrm{~N}_{\mathrm{A}}}\)
2 \(\mathrm{0.6 \mathrm{~N}_{\mathrm{A}}}\)
3 \(\mathrm{\mathrm{N}_{\mathrm{A}}}\)
4 \(\mathrm{\dfrac{\mathrm{N}_{\mathrm{A}}}{2}}\)
Explanation:
Magnesium bicarbonate, \(\mathrm{\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2}}\), molar mass is \(\mathrm{146 \mathrm{~g} / \mathrm{mole}}\). \(\mathrm{146 \mathrm{~g}}\) of \(\mathrm{\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2}}\) contains 6 mole oxygen atoms. \(\mathrm{14.6 \mathrm{~g}}\) of \(\mathrm{\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2}}\) contains ? \(\mathrm{=\dfrac{14.6 \times 6}{146}=0.6 \mathrm{~mole}=0.6 \mathrm{~N}_{\mathrm{A}}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306719
In which of the following pairs do 1 g of each have an equal number of molecules?
Molar mass of \({\mathrm{\mathrm{CH}_{4}=16 \mathrm{~g} / \mathrm{mol}}}\) Electrons in a molecule of \({\mathrm{\mathrm{CH}_{4}=6+(1 \times 4)=10}}\) \({\text{16}}\;{\text{g}}\) of \({\text{C}}{{\text{H}}_{\text{4}}}\) contains \({\mathrm{=10 \times 6.023 \times 10^{23}}}\)electrons \({\mathrm{=60.2 \times 10^{23}}}\) electrons so, (A - Q) One mole or 2 g of hydrogen gas occupies 22.4 L volume at STP . \({\mathrm{\therefore 1 \mathrm{~g}}}\) of \({\mathrm{\mathrm{H}_{2}}}\) gas occupies \({\mathrm{\dfrac{22.4}{2}=11.2 \mathrm{~L}}}\) volume at STP (B – S) 1 mole of \({\mathrm{\mathrm{N}_{2}}}\) gas weighs 28 g . (C- P ) 1 mol of \({\mathrm{\mathrm{SO}_{2}}}\) gas weighs 64 g \({\kern 1pt} \therefore 0.5\;\,{\rm{mol}}\) of gas weighs \({\mathrm{\dfrac{64}{2}=32 \mathrm{~g}(\mathrm{D}-\mathrm{R})}}\)
JEE - 2023
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306717
10 grams of each \(\mathrm{\mathrm{O}_{2}, \mathrm{~N}_{2}}\) and \(\mathrm{\mathrm{Cl}_{2}}\) are kept in three bottles. The correct order of arrangement of bottles containing decreasing number of molecules is
1 mole means \(\mathrm{6.02 \times 10^{23}}\) molecules \(\mathrm{\therefore}\) No. of molecules \(\mathrm{\propto}\) no. of moles no. of moles \(\mathrm{=\dfrac{\text { mass }}{\text { molar mass }}}\) Here no. of moles \(\mathrm{=\mathrm{n}_{\mathrm{N}_{2}}>\mathrm{n}_{\mathrm{O}_{2}}>\mathrm{n}_{\mathrm{Cl}_{2}}}\) (as the given masses are same)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306718
The number of oxygen atoms present in \(\mathrm{14.6 \mathrm{~g}}\) of magnesium bicarbonate is:
1 \(\mathrm{6 \mathrm{~N}_{\mathrm{A}}}\)
2 \(\mathrm{0.6 \mathrm{~N}_{\mathrm{A}}}\)
3 \(\mathrm{\mathrm{N}_{\mathrm{A}}}\)
4 \(\mathrm{\dfrac{\mathrm{N}_{\mathrm{A}}}{2}}\)
Explanation:
Magnesium bicarbonate, \(\mathrm{\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2}}\), molar mass is \(\mathrm{146 \mathrm{~g} / \mathrm{mole}}\). \(\mathrm{146 \mathrm{~g}}\) of \(\mathrm{\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2}}\) contains 6 mole oxygen atoms. \(\mathrm{14.6 \mathrm{~g}}\) of \(\mathrm{\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2}}\) contains ? \(\mathrm{=\dfrac{14.6 \times 6}{146}=0.6 \mathrm{~mole}=0.6 \mathrm{~N}_{\mathrm{A}}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306719
In which of the following pairs do 1 g of each have an equal number of molecules?
