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kirill115 [55]
3 years ago
14

A scientist mixed two chemicals, observed the results, and concluded that an endothermic reaction took place. Which of the follo

wing would be evidence that the reaction was endothermic?
temperature decrease

temperature increase

change of state

change of color
Chemistry
1 answer:
Anni [7]3 years ago
8 0

Answer: Temperature increase

Explanation:

Endothermic reaction means the absorb of heat from the surrounding. So when heat is absorbed from the surrounding then the temperature of the reaction will increase

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A gas has a volume of 1.75L at -23°C and 150.0 kPa. At what temperature would the gas occupy 1.30L at 210.0 kPa?
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Answer:

At -13 ^{0}\textrm{C} , the gas would occupy 1.30L at 210.0 kPa.

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Let's assume the gas behaves ideally.

As amount of gas remains constant in both state therefore in accordance with combined gas law for an ideal gas-

                                          \frac{P_{1}V_{1}}{T_{1}}=\frac{P_{2}V_{2}}{T_{2}}

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           T_{1} and T_{2} are initial and final temperature in kelvin scale respectively.

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