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Rina8888 [55]
2 years ago
10

A medium-sized banana (118g) on average contains 422 mg of potassium - a nutrient needed to maintain fluid balance. If someone e

ats a medium-sized banana each day for a week, how many total grams of potassium are ingested in that week?
Chemistry
1 answer:
4vir4ik [10]2 years ago
8 0

Answer:

2.954 g

Explanation:

One banana contains 422 mg

One banana weighs 118 g

To make our calculations easier, we will convert both unit to the same power, that is both of them will be in g.

422 mg = 422/1000 = 0.422 g

If one banana contains 0.422 g of potassium, then 7 bananas(since he eats 1 per day) will weigh

0.422 * 7 = 2.954 g

Thus, after a week, he would have ingested at least 2.954 g of potassium.

I hope you understand the explanations. Thanks

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a serving of a particular fruit dessert contains 20.0 g of sugar. if all the sugar is sucrose, c12h22o11, how many molecules of
Harrizon [31]

Taking into account the definition of Avogadro's number and molar mass, 3.49334×10²² molecules of sucrose are present.

<h3>Definition of molar mass</h3>

The molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.

<h3>Avogadro's Number</h3>

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.

<h3>Molecules of sugar in this case</h3>

In first place, the molar mass of sucrose is 342 g/mole. So, you can apply the following rule of three: If by definition of molar mass 342 grams of the compound are contained in 1 mole, 20 grams of the compound are contained in how many moles?

amount of moles=\frac{20 gramsx1 mole}{342 grams}

<u><em>amount of moles= 0.058 moles</em></u>

Now, considering the Avogadro's number, you can apply the following rule of three: If 1 mole of the compound contains 6.023×10²³ molecules, 0.058 moles contains how many molecules?

amount of moleculas= (6.023×10²³ molecules × 0.058 moles)÷ 1 mole

<u><em>amount of molecules= 3.49334×10²² molecules</em></u>

Finally, 3.49334×10²² molecules of sucrose are present.

Learn more about

molar mass:

brainly.com/question/5216907

brainly.com/question/11209783

brainly.com/question/7132033

brainly.com/question/17249726

Avogadro's Number:

brainly.com/question/11907018

brainly.com/question/1445383

brainly.com/question/1528951

#SPJ12

6 0
2 years ago
A single atom of an element has 21 nutrons 20 electtons and 20 protons which element is it
guajiro [1.7K]

your element would be calcium


7 0
3 years ago
ELETE
yKpoI14uk [10]

Answer:

5 L

Explanation:

Use Charles law and rearrange formula

Change C to K

- Hope that helped! Please let me know if you need further explanation.

6 0
3 years ago
What is the name of the molecule that is used to heat most of our buildings?<br><br> (Chemistry)
mario62 [17]

Answer:

Fluids (air/water) either as water vapour or oxygen and carbon dioxide.

Explanation:

Heat transfer occurs through conduction, convection or radiation.

Many aties, this involves fluids whose molecules have been activated by heated by heat, moving from hotter to cooler regions, allowing for heating or cooling of the rooms.

Building materials have varying conductivity.

7 0
2 years ago
A three dimensional circular shape
Bond [772]
A three dimensional circular shape would be a sphere :)
4 0
3 years ago
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