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Alexxx [7]
3 years ago
11

Calculate the amount of heat required to raise the temperature of an 64 g sample of water from 32 ∘C to 69 ∘C.

Chemistry
1 answer:
Serjik [45]3 years ago
4 0

Answer:

9945.6 J

Explanation:

Amount of heat = Mass * Heat Capacity * Temperature Change

Heat capacity of Water = 4.2 J/gC

Amount of heat = 64 * 4.2 * (69 - 32)

Amount of heat = 64 * 4.2 * 37

Amount of heat = 9945.6 J

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compared to a solution with a pH of 6, the hydronium ion concentration of a solution with a pH of 4 has how many more Times the
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Record your findings about sound and light waves for each of the following.
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Answer:

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3 years ago
For this question, the "entropy term" refers to "-TΔS". Addition reactions are generally favorable at low temperatures because _
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Answer:

Lowering the temperature typically reduces the significance of the decrease in entropy. That makes the Gibbs Free energy of the reaction more negative. As a result, the reaction becomes more favorable overall.  

Explanation:

In an addition reaction there's a decrease in the number of particles. Consider the hydrogenation of ethene as an example.

\rm H_2C\text{=}CH_2\; (g) + H_2\; (g) \stackrel{\text{Ni}^\ast}{\to} H_3C\text{-}CH_3\; (g).

When \rm H_2 is added to \rm H_2C\text{=}CH_2 (ethene) under heat and with the presence of a catalyst, \rm H_3C\text{-}CH3 (ethane) would be produced.

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\Delta G = \Delta H + (\underbrace{- T \, \Delta S}_{\text{entropy}\atop \text{term}}).

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