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Monica [59]
2 years ago
15

Where does the energy given off by an exothermic reaction come from? HELP ASAP!!

Biology
1 answer:
ivolga24 [154]2 years ago
5 0

In an exothermic reaction, it takes less energy to break bonds in the reactants than is released when new bonds form in the products. The word "exothermic" literally means "turning out heat." Energy, often in the form of heat, is released as an exothermic reaction occurs.

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Propane is burned to provide the heat in many cooking grills. The chemical
tangare [24]

Answer: it's 3CO2+4H2O+Energy

Propane is a linear alkane of formula C3H8. It is mainly used as fuel (this is the main component of liquefied petroleum gas) in cooking and chemical industry reactions.

The reaction of its complete combustion by the presence of oxygen is:

C3H8 (gas) + 5O2  ==> 3 CO2 + 4H2O + energy (2220⋅kJ)

As we can see, propane can release carbon dioxide and water as every combustion reaction, and a lot of energy in the form of heat.

6 0
1 year ago
What traits can make a cell special, why are cells specialized…<br><br> (Minimum 5 sentences)
saw5 [17]

Answer:

They are modified by shape, function, or size. They are made to have certain roles in different parts of our bodies. These cells group together to make/form tissues. Then these tissues make up organs that we obviously need. Different specialized cells include blood cells, nerve cells, and reproductive cells.

Explanation:

3 0
2 years ago
The growth of mosses and lichens on a bare volcanic region helps prepare the area for the next stages of succession. How do moss
melamori03 [73]

Answer:

The correct answer is - B. they build up soil deposits on the rocky ground.

Explanation:

Lichens and mosses are known as the pioneer species as they prepare the particular region for the next stages of succession on the bare volcanic region. Lichens and mosses grow on the bare rocks and secrete acids to break the rocks and start soil production.

The soil deposits produced by breaking the volcanic rocks by secreting acids from mosses and lichens. Even after dying these species leads to thickening of the soil and increase organic matter for the next stages to grow.

4 0
3 years ago
Helppp I need it rn I’m on time
umka2103 [35]

Answer:

B- The gene pool of the population will remain relatively constant

Explanation:

Hope this helps!!

7 0
3 years ago
e) The allele for small size is recessive, and the allele for normal size is dominant. The frequency for the normal-size allele
ki77a [65]

Answer:

51.84%

Explanation:

p² + 2pq + q² = 1 and p + q = 1

p = frequency of the dominant allele in the population

q = frequency of the recessive allele in the population

p²  = percentage of homozygous dominant individuals

q²  = percentage of homozygous recessive individuals

2pq = percentage of heterozygous individuals

p = 0.72 => p² = 0.72² = 0.5184

=> Percentage of the rats are normal sized: 51.84%

3 0
1 year ago
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