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3 years ago

How is energy associated with food stored?

Chemistry

2 answers:

dangina [55]3 years ago

8 0

Answer: A. Potential energy in chemical form.

Explanation:

Energy can neither be created nor destroyed but can be transformed from one form to another.

The food we eat contains potential energy in the form of chemicals e. g Carbohydrates, that the body use in carrying out various biological activities.

disa [49]3 years ago

3 0

<span>potential energy in chemical form</span>

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C.Convert the following using the molar mass of each:

Alik [6]

Answer:

1. 1.145 mole

2. 19.368g

3. 66.67 moles

4. 0.0056g

Explanation:

The following calculations gives the answers to the various questions asked above:

1. Molar mass of NaCl = 23 + 35.5 = 58.5g/mol

Mass of NaCl from the question = 67g

Number of mole NaCl =.?

Number of mole = Mass /Molar Mass

Number of mole NaCl = 67/58.5

Number of mole of NaCl = 1.145 mol

2. Number of mole of H2O = 1.076 mole

Molar Mass of H2O = (2x1) + 16 = 2 + 16 = 18g/mol

Mass of H2O =?

Mass = number of mole x molar Mass

Mass of H2O = 1.076 x 18

Mass of H2O = 19.368g

3. Molar mass of C6H12O6 = (12x6) + (12x1) + (16x6) = 72 + 12 + 96 = 180g/mol

Mass of C6H12O6 = 1.2x104g

Mole of C6H12O6 =.?

Number of mole = Mass /Molar Mass

Mole of C6H12O6 = 1.2x104/180

Mole of C6H12O6 = 66.67 moles

4. Molar mass of Br2 = 2 x 80 = 160g/mol

Mole of Br2 = 3.5x10^-5 moles

Mass of Br2 =?

Mass = number of mole x molar Mass

Mass of Br2 = 3.5x10^-5 x 160

Mass of Br2 = 5.6x10^-3 = 0.0056g

4 0

3 years ago

Read 2 more answers

How do you convert 134kj to Calories?

Sonja [21]

1 kilo joule = 0.239006 calories
134 kilo joule = 134 x 0.239006
= 32.026804 calories

5 0

3 years ago

The book value of a machine, as shown on the balance sheet, is not relevant in a decision concerning the replacement of that mac

KonstantinChe [14]

The book value of a machine, as shown on the balance sheet, is not relevant in a decision concerning the replacement of that machine by another machine: TRUE

<h3>What is the book value?</h3>

Book value is the worth of an asset based on its balance sheet account balance in accounting.
The value of an asset is determined by subtracting the asset's original cost from any depreciation, amortization, or impairment expenses.
Traditionally, a company's book value is equal to its total assets minus intangible assets and liabilities.
In practice, however, depending on the source of the computation, book value may include either goodwill or intangible assets, or both.
The value inherent in its employees, which is part of a company's intellectual capital, is always overlooked.
When intangible assets and goodwill are specifically omitted, the indicator is frequently defined as "tangible book value."

Therefore, the statement "the book value of a machine, as shown on the balance sheet, is not relevant in a decision concerning the replacement of that machine by another machine" is TRUE.

Know more about Book Value here:

brainly.com/question/23057744

#SPJ4

Complete question:

The book value of a machine, as shown on the balance sheet, is not relevant in a decision concerning the replacement of that machine by another machine. (Ignore taxes.) TRUE or FALSE

7 0

2 years ago

A sample of water at 100°C is converted to steam after absorbing 820 kJ of heat. How grams of H2O are contained in the sample? A

Varvara68 [4.7K]

Since water is already at 100<span>°C all the energy is used to evaporate it.
Now we can calculate how many </span>mols of water are evaporated with 820kJ.
$N= \frac{820}{41} =20 mol$
We calculated that we got 20 mols of water evaporated. Now, all we have to do is find how many grams is a mol of water. Molar mass of water is <span>20.16 g/mol.
</span>The final answer is:
$m=20*20.16=403.2g$

7 0

3 years ago

Explain how our body systems work together to get oxygen into and around our body.

aleksandrvk [35]

Answer: (1) Inhales (breathes in) Oxygen - good for the body - gives it to the Circulatory System to be transported throughout the body through the blood. (1) Digestive System gets nutrients (good) from food and hands it over to the blood and Circulatory System then carries those nutrients where they need to go.

7 0

2 years ago