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USPshnik [31]
3 years ago
8

Which one is a true statement about endothermic reactions? A. I need you from an outside source is continuously being added. B.

Reaction container always feels hot. C. The reactants have less heat energy and the products. D. More heat is given off then it put into reaction
Chemistry
2 answers:
tekilochka [14]3 years ago
7 0
Correct answer: "A. Energy from an outside source is continuously being added."
An endothermic reaction is a reaction that is characterised by the system absorbing energy from its surroundings. That energy is usually in heat form. For example, when mixing water<span> with potassium chloride, this reaction will absorb heat and the container will feel cold - endothermic reaction.</span>
Elodia [21]3 years ago
4 0

A) Energy from the outside source is continously being added

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During _____________ there are 24 hours of daylight at the North Pole.
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In what areas of the periodic table do you find the least reactive elements?
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Using the van der Waals equation, the pressure in a 22.4 L vessel containing 1.00 mol of neon gas at 100 °C is ________ atm. (a
svetoff [14.1K]

Answer:

The answer to your question is        P = 1.357 atm

Explanation:

Data

Volume = 22.4 L

1 mol

temperature = 100°C

a = 0.211 L² atm

b = 0.0171 L/mol

R = 0.082 atmL/mol°K

Convert temperature to °K

Temperature = 100 + 273

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Formula

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Substitution

               (P + \frac{0.211}{22.4})(22.4 - 0.0171) = (0.082)(373)

Simplify

               (P + 0.0094)(22.3829) = 30.586

Solve for P

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                           P + 0.0094 = 1.366

                                 P = 1.336 - 0.0094

                                P = 1.357 atm

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