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Verdich [7]
3 years ago
10

Which type of chemical reaction occurs in Ca + Cl2 ->CaCl2?

Chemistry
2 answers:
Mars2501 [29]3 years ago
7 0
Ca + Cl2 ->CaCl2 <span>synthesis  (check your chemistry lesson)</span>
oksano4ka [1.4K]3 years ago
5 0
A. Synthesis is the correct answer
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A 2.04 g lead weight, initially at 10.8 oC, is submerged in 7.74 g of water at 52.2 oC in an insulated container. clead = 0.128
QveST [7]

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Hello, in this case, the lead is catching heat and the water losing it, that's why the heat relation ship is (D is for Δ):

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m_{Pb}C_{Pb}*(T_{eq}-T_{lead}=-m_{H_2O}C_{H_2O}*(T_{eq}-T_{H_2O})\\

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T_{eq}=\frac{m_{Pb}C_{Pb}T_{Pb}+m_{H_2O}C_{H_2O}T_{H_2O}}{m_{Pb}C_{Pb}+m_{H_2O}C_{H_2O}} \\\\T_{eq}=\frac{2.04g*0.128J/(g^oC)*10.8^oC+7.74g*4.18J/(g^oC)*52.2^oC}{2.04g*0.128J/(g^oC)+7.74g*4.18J/(g^oC)} \\\\T_{eq}=51.87^oC

Which is very close to the water's temperature since the lead's both mass and head capacity are lower than those for water.

Best regards.

5 0
3 years ago
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