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dsp73
2 years ago
5

What is chemical energy

Chemistry
1 answer:
anyanavicka [17]2 years ago
8 0

Answer:

chemical energy is the energy of a chemical substance that is stored in the bonds of chemical compounds and is released when they undergo a chemical reaction and transform into another substance

You might be interested in
What is the volume of 1.60 grams of O2 gas at STP? 1.72 liters 1.45 liters 1.32 liters 1.12 liters
elixir [45]

Answer:

The required volume is 1.12 L.

Explanation:

Given,

Mass of O2 gas= 1.60 grams

We know,

Number of moles = Mass/Molecular mass

                             = 1.60/32                     [Molecular mass of O2 gas is 32 gram]

                             = 0.05

Again,

We know that at STP,

Number of moles = Volume in L / 22.4 L

or, Volume = Number of moles X 22.4

or, Volume = 0.05 X 22.4

or, Volume = 1.12

∴The required volume is 1.12 L.

5 0
3 years ago
Why is respiration an exothermic reaction?
Degger [83]

Answer: A large amount of energy is released into the surroundings.

Explanation:-

Endothermic reactions are defined as the reactions in which energy of the product is greater than the energy of the reactants. The total energy is absorbed in the form of heat and \Delta H which is difference between energy of products and energy of reactants come out to be positive.

Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and \Delta H which is difference between energy of products and energy of reactants comes out to be negative.

Thus a reaction in which large amount of energy is released is categorized as exothermic reaction and thus respiration is also a exothermic reaction.

7 0
3 years ago
4. Assuming the reaction below is at equilibrium, which of the following changes will drive the reaction to the left? C(s) + O2(
shepuryov [24]

Answer:

Increasing temperature

Explanation:

C(s) + O_2(g) \leftrightharpoons CO_2(g)

Enthalpy of the reaction = -393.5 kJ/mol

Negative sign implies that reaction is exothermic.

Effect of change in reaction condition is explained by Le chateliers principle.

According to Le chateliers principle, if the reaction conditions of a reversible reaction in a state of dynamic equilibirum is changed, the reaction will move in a direction to counteract the change.

1. Increasing the temperature

Forward reaction is exothermic that means temperature increases in forward direction. Backward reaction will be endothermic and so there is decrease in temperature in backward direction or in left direction.

On increasing temperature, reaction will be move in direction to counteract the increased temperature, therefore reaction will move in left direction.

2. Adding O2

If O2 is added, then reaction will move in a direction in which its get consumed. So, reaction will move in forward direction or in right direction.

3. Removing C (s)

Le Chatelier's principle does not apply on solids, so removal of C(s) does not affect the equilibrium.

4 0
4 years ago
Read 2 more answers
What determines how much kinetic energy an object has?
Anna71 [15]
The mass and speed/velocity determines the kinetic energy an object has.
4 0
3 years ago
The complete combustion of propane, C3H8 in the presence of an excess amount of
Luda [366]

The balanced equation is given by

  • 2 C3H8 + 9 O2 → 4 CO2 + 2 CO + 8 H2O + Heat

Moles of propAne

  • Given mass/Molar mass
  • 220/44
  • 5mol

2 mol of propane produces 8 mol water

1 mol produces 4mol water

moles of water

  • 4(5)
  • 20mol

Mass of water

  • 20(18)
  • 360g
5 0
2 years ago
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