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TimestampScoreName of StudentSchool and City
Q1. Find the number of moles and number of atoms of H and S in 10 mole of H2S.
Q2. Calculate the number of atoms of each element in 245 g of KClO3.
Q3. If 4 g of NaOH dissolves in 36 g of H2O, calculate the Mole fraction of each component.
Q4. Calculate the number of atoms in 12.2 litres of the below gas at NTP (i) mono-atomic (ii) diatomic gas
Q5. If a mole were to contain 1×1024 particles, what would be the mass of (i) one mole of oxygen(ii) a single oxygen molecule?
Q6. Calculate the standard molar volume of oxygen gas. The density of O2 gas at NTP is 1.429 g/L.
Q7. if 2 mol of Calcium Carbonate (Formula Weight =100) occupies a volume of 67.0 ml, Find the density ?
Q8. Calculate how many methane molecules are there in 25 g of Methane?
Q9. Calculate the total number of electrons present in 3.2 g of CH4.
Q10. State the number of atoms in 1 g atom of Aluminium? 6.022×10^23 atoms
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5/15/2021 15:31:019 / 10TusharLUCKNOW cis6.022×10^24 S atoms
12.044×10^23 K atoms, 12.044×10^23 Cl atoms and 1.806×10^24 O atoms.
H2O = 0.95, NaOH = 0.05
(i) 3.011×10^23 atoms (ii) 2 x 3.011×10^23 atoms
(i) 32 (ii) 3.2 x 10^-2322.39 L2.99 gm/ml9.411×10^23 molecules12.044×10^23 electrons.2.23×10^22 atoms
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6/21/2021 11:59:296 / 10Uttam Verma CIS/LKO6.022×10^24 S atoms
12.044×10^24 K atoms, 12.044×10^22 Cl atoms and 1.806×10^24 O atoms.
H2O = 0.95, NaOH = 0.05
(i) 3.011×10^23 atoms (ii) 2 x 3.011×10^23 atoms
(i) 16 (ii) 3.2 x 10^-2422.39 L1.5 gm/ml9.411×10^23 molecules12.044×10^23 electrons.2.23×10^22 atoms
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6/21/2021 12:38:5010 / 10Uttam Verma CIS/LKO6.022×10^24 S atoms
12.044×10^23 K atoms, 12.044×10^23 Cl atoms and 1.806×10^24 O atoms.
H2O = 0.95, NaOH = 0.05
(i) 3.011×10^23 atoms (ii) 2 x 3.011×10^23 atoms
(i) 32 (ii) 3.2 x 10^-2322.39 L2.99 gm/ml9.411×10^23 molecules12.044×10^23 electrons.6.022×10^23 atoms
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9/14/2021 22:31:207 / 10Ananya prakash Cis 6.022×10^24 S atoms
12.044×10^23 K atoms, 12.044×10^23 Cl atoms and 1.806×10^24 O atoms.
H2O = 0.95, NaOH = 0.05
(i) 6.022×10^23 atoms (ii) 2 x 3.011×10^23 atoms
(i) 16 (ii) 3.2 x 10^-2422.39 L2.99 gm/ml3.011×10^23 molecules12.044×10^23 electrons.6.022×10^23 atoms
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9/15/2021 4:38:047 / 10AnjuDelhi6.022×10^24 S atoms
12.044×10^23 K atoms, 12.044×10^23 Cl atoms and 1.806×10^24 O atoms.
H2O = 0.95, NaOH = 0.05
(i) 2 x 3.011×10^23 atoms (ii) 3.011×10^23 atoms
(i) 32 (ii) 3.2 x 10^-2322.39 L1.5 gm/ml9.411×10^23 molecules6.022×10^23 electrons.6.022×10^23 atoms
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5/4/2024 21:16:538 / 10Rithika shree Chennai6.022×10^24 S atoms
12.044×10^23 K atoms, 12.044×10^23 Cl atoms and 1.806×10^24 O atoms.
H2O = 0.95, NaOH = 0.05
(i) 3.011×10^23 atoms (ii) 2 x 3.011×10^23 atoms
(i) 32 (ii) 3.2 x 10^-232.24 L2.99 gm/ml9.411×10^23 molecules12.044×10^23 electrons.2.23×10^22 atoms
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6/15/2024 23:57:272 / 10Asthajitasaikia Jorhat public school 12.044 x 10^23 S atoms
12.044×10^23 K atoms, 12.044×10^23 Cl atoms and 1.806×10^24 O atoms.
H2O = 0.5, NaOH = 0.5
(i) 6.022×10^23 atoms (ii) 2 x 3.011×10^23 atoms
(i) 8 (ii) 6.4 x 10^-2322.39 L1.5 gm/ml3.011×10^23 molecules3.011×10^23 electrons.3.011×10^23 atoms
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6/20/2024 20:40:442 / 10Vishal Govt1.8066 x 10^23 S atoms
12.044×10^20 K atoms, 12.044×10^20 Cl atoms and 1.806×10^25 O atoms.
H2O = 0.45, NaOH = 0.55
(i) 2 x 3.011×10^23 atoms (ii) 3.011×10^23 atoms
(i) 16 (ii) 3.2 x 10^-246.88 L2.99 gm/ml3.011×10^23 molecules6.022×10^23 electrons.6.022×10^23 atoms
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