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prohojiy [21]
3 years ago
12

Identify the main function of carbohydrates. supply energy to cells store and transfer genetic information transfer chemicals bu

ild muscle
Chemistry
2 answers:
liraira [26]3 years ago
8 0

Answer: Option (a) is the correct answer.

Explanation:

Carbohydrates are the substances that consists of sugars, starch, and fibers in food items.

For example, breads, fruits, vegetable etc all contain carbohydrates.

Some functions of carbohydrates are as follows.

  • Primarily, carbohydrates provide energy to the body or cells of consumer.
  • They help in the building of macro molecules.
  • Carbohydrates also help in storage of energy.

Hence, we can conclude that the main function of carbohydrates is  supply energy to cells.

BaLLatris [955]3 years ago
3 0

Carbohydrates are used for short term energy so it’s gonna be supply energy to the cell, proteins are used for genetic information and building muscles

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Answer: The enthalpy change is 34.3 kJ

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The conversions involved in this process are :

(1):H_2O(s)(-18^0C)\rightarrow H_2O(s)(0^0C)\\\\(2):H_2O(s)(0^0C)\rightarrow H_2O(l)(0^0C)\\\\(3):H_2O(l)(0^0C)\rightarrow H_2O(l)(25^0C)

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\Delta H=[m\times c_{s}\times (T_{final}-T_{initial})]+n\times \Delta H_{fusion}+[m\times c_{l}\times (T_{final}-T_{initial})]

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c_{l} = specific heat of liquid water = 4.184J/g^0C

n = number of moles of water = \frac{\text{Mass of water}}{\text{Molar mass of water}}=\frac{72.0g}{18g/mole}=4.00moles

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Now put all the given values in the above expression, we get

\Delta H=[72.0g\times 2.09J/g^0C\times (0-(-18)^0C]+4.00mole\times 6010J/mole+[72.0g\times 4.184J/g^)C\times (25-0)^0C]\Delta H=34279.8J=34.3kJ        (1 KJ = 1000 J)

Therefore, the enthalpy change is 34.3 kJ

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