Advertisements
Advertisements
प्रश्न
1 mole of any substance contains ______ molecules.
पर्याय
6.023 × 1023
6.023 × 10-23
3.0115 × 1023
12.046 × 1023
Advertisements
उत्तर
1 mole of any substance contains 6.023 × 1023 molecules.
APPEARS IN
संबंधित प्रश्न
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 :
0.5 mole of calcium element has a mass of ............... .
What is the value of Avogadro's number?
Fill in the blank.
One a.m.u. is the mass of ______ atom of C12.
Fill in the blank
Avogadro's number is equal to ______
Calculate the weight of one molecule of oxygen.
[Avogadro’s number = 6 × 1023, O = 16 ]
A student puts his signature with a graphite pencil. If the mass of carbon in the signature is 10-12 g, calculate the number of carbon atoms in the signature.
Solid ammonium dichromate decomposes as:
\[\ce{(NH4)2Cr2O7 -> N2 + Cr2O3 + 4H2O}\]
If 63 g of ammonium dichromate decomposes. Calculate the quantity in moles of (NH4)2Cr2O7.
How many grams are there in the following?
2 moles of the hydrogen molecule, H2.
Calcium chloride when dissolved in water dissociates into its ions according to the following equation.
\[\ce{CaCl2} (aq) → {Ca^{2+} (aq) + 2{Cl}- (aq)}\]
Calculate the number of ions obtained from CaCl2 when 222 g of it is dissolved in water.
