Advertisements
Advertisements
प्रश्न
Which of the following correctly represents 360 g of water ?
- 2 moles of H2O
- 20 moles of water
- 6.022 × 1023 molecules of water
- 1.2044 × 1025 molecules of water
पर्याय
(i)
(i) and (iv)
(ii) and (iii)
(ii) and (iv)
उत्तर
(ii) and (iv)
20 moles of water and 1.2044×1025 molecules of water correctly represent 360 gms of water.
APPEARS IN
संबंधित प्रश्न
What is the mass of 1 mole of nitrogen atoms?
What is the mass of 4 moles of aluminium atoms (Atomic mass of aluminium = 27)?
How many moles of O2 are there in 1.20 × 1022 oxygen molecules ?
A sample of ammonium nitrate when heated yields 8.96 litres of steam (measured at STP)
NH4NO3 → N2O + 2H2O
What volume of dinitrogen oxide is produced at the same time as 8.96 L of steam?
The equation for the burning of octane is:
\[\ce{2C8H18 + 25O2 -> 16CO2 + 18H2O}\]
How many moles of carbon dioxide are produced when one mole of octane burns?
Calculate the mass of 0.1 mole of carbon dioxide.
[Atomic mass: S = 32, C = 12 and O = 16 and Avogadro's number = 6 × 1023]
Define or explain the term:
Molar volume
Calculate the number of moles of CO2 which contain 8.00 g of O2
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.
How many grams are there in the following?
5 moles of sulphur molecule, S8
