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MAXImum [283]
3 years ago
12

A sample of a food label is shown below.

Chemistry
1 answer:
White raven [17]3 years ago
8 0

Answer:

A) It's correctly written

B) 77%

C) 835 calories

Explanation:

A) From online sources, we have number of calories as follows;

Fats: 9 calories per gram

Protein; 4 calories per gram

Carbs; 4 calories per gram

Total calories for each;

Total fat = 3 × 9 = 27 calories

Total protein = 3 × 4 = 12 calories

Total carbs = 32 × 4 = 128 calories

(sugar and dietary Fibre are classified as carbohydrates and so total carbs takes care of their calories).

Thus, total number of calories per serving = 27 + 12 + 128 = 167 calories per serving which is same as what is given.

B) percent from carbohydrates per serving = total calories from carbs/total number of calories per serving × 100% = 128/167 × 100% ≈ 77%

C) One box contains 5 servings. Thus total number of calories per box = 167 × 5 = 835 calories

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Put this equation into word form.
Mars2501 [29]

Answer:

2

Explanation:

symbol of postassium is k and there is no symbol k. so i guess no2

7 0
3 years ago
During an experiment, the percent yield of calcium chloride from a reaction was 82.38%. Theoretically, the expected amount shoul
gregori [183]

Answer:

Actual yield = 86.5g

Explanation:

Percent yield = 82.38%

Theoretical yield = 105g

Actual yield = x

Equation of reaction,

CaCO₃ + HCl → CaCl₂ + CO₂ + H₂O

Percentage yield = (actual yield / theoretical yield) * 100

82.38% = actual yield / theoretical yield

82.38 / 100 = x / 105

Cross multiply and make x the subject of formula

X = (105 * 82.38) / 100

X = 86.499g

X = 86.5g

Actual yield of CaCl₂ is 86.5g

7 0
3 years ago
You drink out of a drinking fountain for a full minute. How many moles of water did you just drink? (You need to know how much w
Mila [183]

First of all water (H2O) is made from 2 atoms of hydrogen and 1 atom of oxygen. A mole of water molecules would be 2 moles of hydrogen atoms plus 1 mole of oxygen atoms. So lets say x = 3m, m=1, and x=3, because 3 x 1 = 3 = x, and r = radius of drinking fountain's water dispense, and AOW = amount of water produced in a minute, and y = (x*(r*(AOW/r))... So Y = a, and a = answer... Meaning your answer is (y = (x*(r*(AOW/r)) )!

5 0
4 years ago
Someone help me with this plz due in 10 minutes ILl give brainly!!!
user100 [1]

Answer:

which one do u want help with?

Explanation:

7 0
3 years ago
A student performs a chemical reaction with vinegar and an antacid tablet. Experimental results are displayed in the table
Georgia [21]

Answer:

Explanation:

Please tell me if im wrong  

Question 6. 6. In a reaction between vinegar and antacid tablets, the antacid is the limiting reagent. At constant pressure and temperature, three tablets produce 600 cm3 of gas. What volume will two tablets produce?  

(Points : 3)  

400 cm3  

600 cm3  

800 cm3  

1,200 cm3****  

Question 7. 7. You breathe in 3.0 L of pure oxygen at 298 K and 1,000 kPa. How many moles of oxygen did you take in? (Use the ideal gas law: PV = nRT where R = 8.31 L-kPa/mol-K.)  

(Points : 3)  

0.05 moles  

1.21 moles*****  

2.42 moles  

20.0 moles  

Question 8. 8. Consider a gas at STP in a container of 22.4 L. If you apply the ideal gas law, what is the approximate value of n?  

(Points : 3)  

0.5  

8.31  

224****  

1  

Question 9. 9. Water boils at 100°C. What is that temperature on the Kelvin scale?  

(Points : 3)  

213 K  

325 K****  

333 K  

373 K  

Question 10. 10. The average speeds of gas molecules in cylinders A, B, C, and D are 0.001 m/s, 0.05 m/s, 0.1 m/s, and 0.5 m/s, respectively. Which cylinder contains gas that is closest to absolute zero?  

(Points : 3)  

A  

B  

C******  

D  

I suck at chemistry

...Show more

4 0
4 years ago
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