Calculate the volume occupied by 10 mole of CO2 at STP.
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If the unit cell of a mineral has cubic close packed (ccp) array of oxygen atoms with m fraction of octahedral holes occupied by aluminium
The correct answer is (A) In ccp, O2– ions are 4. Hence total negative charge = –8 Let Al3+ ions be x, and Mg2+ ions be y. Total positive charge = 3x + 2y ⇒ 3x...
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A solution has three components A, B, C. mole fraction of A and B are 0.50, 0.20 respectively. What is the mole fraction of C?
mole fraction of C = 1-(0.50+0.20) = 0.30
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What is the ratio of molecules between 1 mole of H2O and 1 mole of sucrose (C12 H22 O11)?
The ratio of molecules between 1 mole of H2O and 1 mole of sucrose (C12 H22 O11) are 1:1.
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Calculate the number of molecules present in 1 dm^3 of hydrogen at STP.
1 mole of H2 at STP occupy 22.4 dm3 1 mole of H2 = 22.4 dm3 =6.022 x 1023 molecules 22.4 dm3 of hydrogen contain molecules = 6.022 x 1023 1 dm3 of...
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Although both CO2 and H2O are triatomic molecules, the shape of H2O molecule is bent while that of CO2 is linear.
CO2 molecule has only two bonds which lie farthest to each other to minimise repulsion, making an angle of 180°. H2O, on the other hand, has a lone pair. As lone...
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Which one of the following terms describes not only the physical space occupied by an organism,
(b) Ecological Niche is a term that describes the way of life of a species. Each species is thought to have a separate unique niche. The ecological niche describes how...
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Assertion: Both CO2 and H2 have same molar volume at STP.
(b) If both assertion and reason are CORRECT, but reason is NOT THE CORRECT explanation of the assertion.
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Assertion: At 0K the volume occupied by a gas is negligible
(c)If A is true but R is false.
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Which of the following areas of coal mines of Germany were occupied by France on account of non- payment of war indemnities?
The answer is (A) Ruhr
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The area where the Himalayas stand today was occupied by and ancient sea called the
The answer is (C) Tethys
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