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Inga [223]
3 years ago
15

The SI unit of heat energy is British Thermal unit Joule all of the above Calorie

Chemistry
1 answer:
AnnyKZ [126]3 years ago
7 0
I think the answer is Joule.

As an amount of energy (being transferred), the SI unit of heat is the joule (J).
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If you examined the human body on a chemical composition basis, which of the following combinations of elements would be most co
Harlamova29_29 [7]

Answer:

(C) O, C, H, N

Explanation:

<u>Roughly 96% of mass of human body is made up of four elements which are oxygen, carbon, nitrogen and hydrogen.</u>

Oxygen and hydrogen are predominantly found in the water, which makes up about 60% of body's weight. Carbon is synonymous with the life. The central role of carbon is due to fact that it has four bonding sites which allow for building of long and complex chains of the molecules. Moreover, these carbon bonds can be formed and also be broken with amount of energy which makes life alive. Nitrogen is found in organic molecules, including amino acids which make up the proteins, and nucleic acids which make up the DNA.

5 0
3 years ago
What would happen to a sealed bag of chips left in the sun?
olchik [2.2K]

The answer is the gaz inside the bag would expand. (A)

7 0
3 years ago
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2 Zn + O2 → 2 ZnO
meriva

Answer:

we need 6.0 moles of zinc (Zn)

Explanation:

Step 1: Data given

Number of moles ZnO produced = 6.0 moles

Step 2: The balanced equation

2 Zn + O2 → 2 ZnO

For 2 moles Zinc we need 1 mol Oxygen to produce 2 moles Zinc oxide

Step 3: Calculate moles zinc

For 2 moles Zn we need 1 mol O2 to produce 2 moles ZnO

For 6.0 moles 2nO produced, we need 6.0 moles of zinc (Zn) and 3.0 moles of O2 to react.

3 0
3 years ago
The Fischer esterification mechanism is examined in this question. The overall reaction is: Benzoic acid, C H 3 O H and H C l re
elena55 [62]

Answer:

See explanation and image attached

Explanation:

Fischer esterification is a type of reaction used  to convert carboxylic acids to ester in the presence of excess alcohol and a strong acid which acts as a catalyst. Another final product formed in the reaction is water.

The mechanism for the fischer esterification of Benzoic acid and  C H 3 O H in the presence of HCl as the catalyst is shown in the image attached to this answer.

The final products of the reaction are methyl benzoate, water and H^+ as shown in the image attached.

4 0
2 years ago
Why are thiols more nucleophilic than alcohols?
Roman55 [17]

Answer:

Thiols contain stronger acids than alcohols

Explanation:

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2 years ago
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