When the CaCl2(s) is added to water, the following reaction occurs. CaCl2(s) → Ca2+(aq) + 2Cl–(aq) ΔH = – 81.5 kJ A 36.6 g sample of CaCl2 is dissolved in water, with both substances at 25.0 °C. Calculate the final temperature (in °C) of the solution assuming no heat is lost to the surroundings, the final solution, containing CaCl2 and water, has a mass of 100.0 g and the solution has a specific heat capacity of 4.18 J °C–1g –1. The molar mass of CaCl2 = 110.98 g/mol

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1. why does the same side of the moon always face earthc.the rotational period of the moon is equal to one revolution around earth2. which is greater the moons period of rotation or its period of revolution  b.the moons revolution period around earth3.what was the major accomplishment of the apollo missions  c.sending the first human into space4. which of these space missions involved the deployment of lunar roversa. voyager 15. which scientists are going to explore next on kepler-186fd. evidence of existence of life6.which mission is not going to explore the outside of the solar  systemb.safir7.which technology limit the future of space explorationb. scientist must first develop certain technologies before missions can be completed.