Home
Class 9
CHEMISTRY
Convert into mole : (a) 12 g of oxygen...

Convert into mole :
(a) 12 g of oxygen gas
(b) 20 g of water
(c) 22 g of carbon dioxide.

Text Solution

Verified by Experts

(a) Molar mass of oxygen `(O_(2)) = 2 xx 16` = 32 g
Given mass of oxygen = 12 g
Number of moles = `("given mass")/("molar mass")`
`=(12)/(32) = 0.375` mole
Mole of oxygen gas = 0.375 mole.
(b) Molar mass of water `(H_(2)O) = (2 xx 1) + 16` = 2 + 16 = 18 g
Given mass of water = 20 g Number of moles = `("given mass")/("molar mass")`
`=(20)/(18) ~~ 1.11` mole
Mole of water = 1.11 mole.
(c) Molar mass of carbon dioxide `(CO_(2)) = 12 + (2 xx 16)` = 12 + 32 = 44 g
Given mass of carbon dioxide = 22 g
Number of moles = `("given mass")/("molar mass")`
`=(22)/(44) = 0.5` mole
Mole of carbon dioxide = 0.5 mole.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ATOMS AND MOLECULES

    KUMAR PRAKASHAN|Exercise QUESTIONS AND ANSWERS ( SCIENTIFIC REASONS)|3 Videos

  • ATOMS AND MOLECULES

    KUMAR PRAKASHAN|Exercise QUESTIONS AND ANSWERS ( MATCH THE COLUMN )|5 Videos

  • ATOMS AND MOLECULES

    KUMAR PRAKASHAN|Exercise QUESTIONS AND ANSWERS (WRITE THE FORMULAE )|15 Videos

  • BIOLOGY

    KUMAR PRAKASHAN|Exercise QUESTION BASED ON PRACTICAL SKILLS WITH ANSWERS (SELECT THE APPROPRIATE OPTION AND COMPLETE THE SENTENCE)|22 Videos

Similar Questions

Explore conceptually related problems

When 3.00 g of carbon is burnt in 8,00 g of oxygen, 11.00 g of carbon dioxide is produced. What mass of carbon dioxide will be formed when 3.00 g of carbon is burnt in 50.00 g of oxygen? Which law of chemical combination will govern your answer ?

In a reaction, 5.3 g of sodium carbonate reacted with 6g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g of water and 8.2 g of sodium ethanoate. Show that these observations are in agreement with the law of conservation of mass. underset("carbonate")("Sodium") + underset("acid")("Ethanoic") to underset("ethanoate")("Sodium") + "Water" + underset("dioxide")("Carbon")

Knowledge Check

  • 16 g of oxygen has same number of molecules as in

    A
    16 g of CO
    B
    28 g of `N_(2)`
    C
    14 g of `N_(2)`
    D
    1.0 g of `H_(2)`

    • Similar Questions

    Explore conceptually related problems

    Convert the following into mole: 12 g oxygen [Molecular weight of O_(2) is 32 u.]

    Calculate the amount of carbon dioxide that could be produced when, (i) 1 mole of carbon is burnt in air. (ii) 1 mole of carbon is burnt in 16g of dioxygen. (iii) 2 moles of carbon are burnt in 16 g of dioxygen.

    2.0 g of oxygen contains number of atoms same as in

    What will be the pressure exerted by a mixture of 3.2 g of methane and 4.4 g of carbon dioxide contained in a 9 dm^(3) flask at 27^(@)C ?

    Calculate the mass percentage of benzene (C_(6)H_(6)) and carbon tetrachloride (C Cl_(4)) if 22 of benzene is dissolved in 122 g of carbon tetrachloride.

    If one mole of oxygen atom weigh 16 g, find the mass of one atom of oxygen in grams.

    The number of gram-atoms of oxygen in 128g of oxygen is

    Home
    Profile