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stiv31 [10]
3 years ago
5

Explain how H20 chemical formula describe a model of a water molecule?

Chemistry
1 answer:
nignag [31]3 years ago
5 0

Its molecule contains one oxygen and two hydrogen atoms.

Explanation:

Water is a chemical substance with the chemical formula H2O. Water is a chemical substance with the chemical formula H2O. Its molecule contains one oxygen and two hydrogen atoms connected by covalent bonds.

Hope this helps ; )

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how does an airplane’s kinetic energy and potential energy change as it takes off and lands? How does this energy change relate
mojhsa [17]

Answer: As the airplane goes higher, the mechanical energy is changed into gravitational potential energy. While flying, some energy is lost through drag to thermal (heat) energy and sound energy. Some is also lost as the plane makes the air around it move. ... As speed and height decrease, kinetic and potential energy decrease.

Explanation:

Hope this help

8 0
3 years ago
You lab measurements are 23.29, 23.1g, and 23.2g for each trial. Which of the following are your measurements?​
STatiana [176]

Answer:

Precise and maybe accurate.

Explanation:

To know if it is accurate, determine whether or not your measurements are similar to the correct measurements

3 0
3 years ago
Give an example of how today’s forensic chemists can help solve crimes
goldenfox [79]

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4 0
3 years ago
40 points
amm1812

Answer:

I am so confused about this i am so sorry but i cant there is to much going on

Explanation:

7 0
3 years ago
Read 2 more answers
John and his wife are celebrating their first wedding anniversary. Their dinner consists of 55 grams of carbohydrates, 36 grams
nika2105 [10]

Answer: 733 kcal

Explanation:

According to a system used to calculate the available energy of foods, we have the following data:

  • protein has 4 kcal/g
  • carbohydrates has 4 kcal/g
  • fat has 9 kcal/g
  • alcohol has 7 kcal/g

So, we are told Jhon and his wife's dinner has:

  • 55 g of carbohydrates
  • 36 g of protein
  • 27 g of fat
  • 18 g of

Now we have to multiply these values by the kilocalories:

  • (55 g of carbohydrates)(4 kcal/g)=220 kcal  
  • (36 g of protein)(4 kcal/g)=144 kcal
  • (27 g of fat)(9 kcal/g)=243 kcal
  • (18 g of alcohol)(7 kcal/g)=126 kcal

Then we have to sum all, giving the following result:

<h2>733 kcal</h2>
4 0
3 years ago
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