Answer:
Equilibrium composition for, no2 =.7365
The equilibrium composition for, nN2=3.76
Explanation:
Answer:
The system gains 126100 J
Explanation:
The heat can be calculated by the equation:
Q = nxCxΔT, where Q is the heat, C is the heat capacity,n is the number of moles and ΔT is the variation of temperature (final - initial). The number of moles is the mass divided by the molar mass, so:
n = 250/4 = 62.5 mol.
The system must be in thermal equilibrium with the surroundings, so if the temperature of the surroundings decreased 97 K, the temperature of the system increased by 97 K, so ΔT = 97 K
Q = 62.5x20.8x97
Q = 126100 J
Answer:
13.26 g has 4 significant figures
B,c and f are true,but I doubt about g cause I don't know anything about electron's dimention
Atomic number Bi = 83
electron configuration Bi : 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p3
p orbitals = 3p6, 4p6, 5p6 and 6p3
so, 6 + 6 + 6 + 3 = 21 electrons
