Mass of nitrogen, m = 2.0 × 10-2 kg=20 g
in temperature, ΔT = 45°C
Molecular mass of N2, M = 28
Universal gas constant, R = 8.3 J mol-1 k-1
Number of moles, \(n=\frac{m}{M}\)
\(=\frac{2.0×10^{-2}×10^3}{28}=0.714\)
Molar specific heat at constant pressure for nitrogen, \(c_p=\frac{7}{2}\,R\)
\(=\frac{7}{2}×8.3\)
=29.05 J mol-1 K-1
The total amount of heat to be supplied is given by the relation:
\(ΔQ = C_p^n ΔT\)
\(= 0.714 × 29.05 × 45\)
\( = 933.38 \,J\)
Therefore, the amount of heat to be supplied is 933.38 J.
Match List-I with List-II: List-I List-II
In the given cycle ABCDA, the heat required for an ideal monoatomic gas will be:
Give reasons for the following.
(i) King Tut’s body has been subjected to repeated scrutiny.
(ii) Howard Carter’s investigation was resented.
(iii) Carter had to chisel away the solidified resins to raise the king’s remains.
(iv) Tut’s body was buried along with gilded treasures.
(v) The boy king changed his name from Tutankhaten to Tutankhamun.
Find the mean deviation about the median for the data
xi | 15 | 21 | 27 | 30 | 35 |
fi | 3 | 5 | 6 | 7 | 8 |