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melamori03 [73]
1 year ago
15

How many kcal does a food item containing 20 grams of carbohydrate provide?

Biology
1 answer:
NISA [10]1 year ago
3 0

Answer:

b. 80

Explanation:

There are about 4 calories per gram of carbohydrates. As such, if 20 grams of carbohydrate are provided, simply multiply 4 calories per gram with the total amount of grams of carbohydrates.

<em>20 grams of carbohydrates</em> x <em>4 calories per gram of carbohydrates</em> = 80 calories total.

Learn more, here:

brainly.com/question/13584986

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3 years ago
Two solutions will be prepared with the mixture of distilled water and stock solution of KMnO4 (10 mM). Give the correct volumes
Yanka [14]

Answer:

See the answer below

Explanation:

<em>Recall that the law of dilution states that the number of moles before dilution must be equal to the number of moles after dilution.</em>

Mathematically,

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For solution A: final molarity = 3 mM, final volume = 2mL, initial molarity of KMnO4 = 10 mM

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For solution B:final molarity = 8 mM, final volume = 2 mL, initial molarity = 10 mM

    10 x initial volume = 8 x 2

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3 years ago
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Answer:

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Explanation:

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