Advertisements
Advertisements
प्रश्न
Calculate the molar mass of the following substance:
Phosphorus molecule, P4 (atomic mass of phosphorus = 31)
Advertisements
उत्तर
Molar mass of phosphorus molecule, P4 = 4 × atomic mass of S
= (8 × 32) u
= 124 u
APPEARS IN
संबंधित प्रश्न
How many moles are 3.6 g of water ?
How many moles are represented by 100 g of glucose, C6H12O6 ? (C = 12 u, H = 1 u, O = 16 u)
Define the term:
Avogadro’s number
Calculate the weight of one molecule of oxygen.
[Avogadro’s number = 6 × 1023, O = 16 ]
A flask contains 3.2g of sulphur dioxide.Calculate the following : The moles of sulphur dioxide present in the flask.
Which of the following would weight the least?
[Atomic masses : Ag = 108, N - 14, O = 16,C = 12]
Explain the term:
Molar volume
Calculate the number of molecules in one Kg of calcium chloride.
How many grams are there in the following?
4 moles of the phosphorous molecule, P4
Cinnabar (HgS) is a prominent ore of mercury. How many grams of mercury are present in 225 g of pure HgS? Molar mass of Hg and S are 200.6 g mol–1 and 32 g mol–1 respectively.
