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Savatey [412]
3 years ago
5

What bonds are broken and octane combustion?

Chemistry
1 answer:
dedylja [7]3 years ago
7 0

Answer:

Common combustion reactions break the bonds of hydrocarbon molecules,

Explanation:

the resulting water and carbon dioxide bonds always release more energy than was used to break the original hydrocarbon bonds. That's why burning materials mainly made up of hydrocarbons produces energy and is exothermic.

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During digestion, hydrochloric acid (HCl) lowers the stomach's pH and this causes the enzyme pepsinogen to be converted to its a
Klio2033 [76]

Answer:

Catalysis

Explanation:

Pepsin is able to break peptide bonds, turning large protein molecules into small peptide chains.

When pepsin acts to break down pepsinogen (inactive form of pepsin), it is accelerating pepsinogen → pepsin reactions, acting as a catalyst, reducing activation energy and favoring proteolytic reactions at a higher rate.

This process of accelerating reactions is characteristic of enzymes and is known as catalysis.

7 0
3 years ago
What is the difference between a permanent change and a temporary change? What is
NikAS [45]

Answer:

temporary changes are the changes which are there only for a short period if time.

Explanation:

generally temporary changes are reversible. permanent changes are the changes which remain for a longer time and are not reversible

6 0
3 years ago
Read 2 more answers
Classify each phrase according to whether it applies to photophosphorylation, oxidative phosphorylation, or both
chubhunter [2.5K]

Answer:

1. Both

2. Phosphorylation

3. Both

4. Phosphorylation

5. Oxidative.

6. Both

Explanation:

Phosphorylation only occurs in chloroplast and it involves larger electrical component. Both Phosphorylation and oxidative occurs in mitochondria and it involves proton gradient. They occur in plants to produce ATP. Oxidative involves in smaller electrical component.

6 0
3 years ago
A woman with diagnosed osteoporosis is told by her doctor to take 1,000 mg of calcium carbonate in addition to increasing intake
spayn [35]

Answer:

400 mg

Explanation:

Given:

A woman with is told by her doctor to take 1,000 mg of calcium carbonate.

Question asked:

How many mg of calcium are in this 1,000 mg regimen of calcium carbonate?

Solution:

As we know:

<em>Amount of elemental calcium in a medicine containing calcium carbonate = 40%</em>

As here doctor prescribed 1000 mg of calcium carbonate to be taken by the woman increasing intake of calcium-containing foods in her diet and including regular weight-bearing exercise, hence amount of elemental calcium in 1,000 mg regimen of calcium carbonate will be,

40\%\ of\ 1000\ mg\\\frac{40}{100} \times1000\ mg\\\frac{40000}{100} = 400\ mg

Therefore, 400 mg of calcium are in this 1,000 mg regimen of calcium carbonate.

6 0
4 years ago
Valence blank are in the outermost shell and influence reactivity during blank of different atoms to produce compounds.
kari74 [83]
The answers is electrons
3 0
3 years ago
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