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:
Atomic Particles
Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge).
You’re answer would be B love!
Answer:
1121.08 millilitres of 0.223 M 
solution contains 0.250 moles of .
Explanation:
The formula for molarity of a solution:
Molarity = 0.223 M
n = 0.250 moles
Therefore, 1121.08 millilitres of 0.223 M solution contains 0.250 moles of .
