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प्रश्न
The ratio of moles of atoms in 12 g of magnesium and 16 g of sulphur will be :
पर्याय
3 : 4
4 : 3
1 : 1
1 : 2
उत्तर
1:1
The ratio of moles of atoms in 12 g of Magnesium and 16 g of Sulphur will be 1:1.
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संबंधित प्रश्न
Convert into mole.
22 g of carbon dioxide
A gas cylinder can hold 1 kg of hydrogen at room temperature and pressure
1) Find the number of moles of hydrogen present.
2) What weight of CO2 can the cylinder hold under similar conditions of temperature and pressure? (H = 1, C = 12, O = 16)
3) If the number of molecules of hydrogen in the cylinder is X, calculate the number of CO2 molecules in the cylinder under the same conditions of temperature and pressure.
4) State the law that helped you to arrive at the above result.
Fill in the following blanks :
A mole represents an .............. number of particles of a substance.
Fill in the following blanks :
0.5 mole of calcium element has a mass of ............... .
Deduce the number of molecules of the following compound in the given quantity.
32g oxygen
What is the value of Avogadro's number?
Define the term : Avogadro's number
Consider the following reaction and based on the reaction answer the questions that follow :
\[\ce{(NH4)2Cr2O7 ->[heat] N2(g) + 4H2O(g) + Cr2O3}\]
Calculate :
(i) The quantity in moles of (NH4)2Cr2O7 if 63 gm of (NH4)2Cr2O7 is heated.
(ii) The quantity in moles of nitrogen formed.
(iii) The volume in litres or dm3 of N2evolved at STP.
(iv) The mass in grams of Cr2O3 formed at the same time
[Atomic masses : H = 1, Cr=52, N=14]
What is the value of molar volume of a gas at S.T.P?
From the equation for burning of hydrogen and oxygen
\[\ce{2H2 + O2 -> 2H2O}\] (Steam)
Write down the number of mole (or moles) of steam obtained from 0.5 moles of oxygen.
