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3 years ago

Where does the energy come from that is needed for an endothermic reaction

Chemistry

2 answers:

4vir4ik [10]3 years ago

5 0

Where else but from the surroundings?

jasenka [17]3 years ago

3 0

Answer : For an endothermic reaction the energy come from the surroundings.

Explanation :

Endothermic reaction : It is a type of chemical reaction in which the energy is absorbed by the surroundings. In this reaction, the energy of reactants are less than the energy of products. The energy of reactant is greater than the energy of product.

Exothermic reaction : It is a type of chemical reaction in which the energy is released into the surroundings. In this reaction, the energy of reactants are more than the energy of products. The energy of product is greater than the energy of reactant.

Hence, the energy come from the surroundings that is needed for an endothermic reaction.

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which of these energy resources can produce the most amount of energy from the smallest amount of fuel? choices coal, uranium, p

nikitadnepr [17]

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3 years ago

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5.60 g of an unknown gas at STP fills a 500 mL flask. What is the molar mass of the gas

ale4655 [162]

Hey there!

From ideal gas equation we know, PV = nRT

All the terms have their usual significance.

PV =w/M * RT

( where , n is number of moles = w/M, we = weight of gas, M = molecular weight of the gas)

Therefore, PV = wRT/M

At standard conditions , value of pressure, P = 1atm and standard temperature, T = 273K

And value of universal gas constant, R = 0.082 lit. atm. K⁻¹.mol⁻¹

Given that, weight of gas,

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V = 500mL = 0.5 Liters

Therefore, substituting all the value, we get :

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Molar mass = 250.7232 g/mole

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4 years ago

In 1939, at the age of 20, a man stood 270 cm tall (over 8 1/2 feet) and wore size 37 shoes! The hormonal disorder from which he

rodikova [14]

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4 years ago

What information do the coefficients of a balanced equation give about the

ale4655 [162]

Answer:

B. The coefficients give the molar ration of the reactants

Explanation:

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3 years ago