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3 years ago

How is fiber important to the body?

1 answer:

4 0

Dietary fiber increases the weight and size of your stool and softens it. A bulky stool is easier to pass, decreasing your chance of constipation. If you have loose, watery stools, fiber may help to solidify the stool because it absorbs water and adds bulk to stool. Helps maintain bowel health.

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Calculate the mass of nitrogen dissolved at room temperature in an 86.0 L home aquarium. Assume a total pressure of 1.0 atm and

Andrew [12]

Answer:

Mass of nitrogen gas dissolved= 1.1732 grams

Explanation:

According to Dalton's Law of partial pressure:

$P_{N_2}=P_{Total}X_{N_2}$

Where,

$P_{N_2}$ is the partial pressure of nitrogen

$P_{Total}$ is the Total pressure

$X_{N_2}$ is the mole fraction of nitrogen

Given :

Total pressure = 1.0 atm

Mole fraction of nitrogen = 0.78

Partial pressure of nitrogen:

$P_{N_2}=1.0\times 0.78 atm$

Partial pressure of nitrogen = 0.78 atm

According to Henry's law:

Solubility = Henry's constant (k)×Partial pressure

k = 6.26×10⁻⁴ mol/L-atm

Thus,

Solubility of nitrogen = 6.26×10⁻⁴ mol/L-atm×0.78 atm = 4.8828×10⁻⁴ mol/L

Given: Volume = 86.0 L

So, Moles of nitrogen gas dissolved:

Moles = Solubility (Concentration dissolved)×Volume

Moles = 4.8828×10⁻⁴ mol/L×86.0 L = 0.0419 moles

Also,

$moles=\frac{Mass(m)}{Molar\ mass (M)}$

$Mass\ of\ nitrogen=moles\times {Molar\ mass}$

Molar mass of nitrogen gas = 28 g/mol

So,

Mass of nitrogen gas dissolved = 0.0419 moles×28 g/mol = 1.1732 grams

6 0

4 years ago

The ability to conduct heat is an example of a chemical property. true or false

FrozenT [24]

False the ability to conduct heat is a physical property

7 0

3 years ago

Lysosomes are important for digestion cell division reproduction protein synthesis

KiRa [710]

It’s important for digestion.

7 0

3 years ago

Read 2 more answers

The solubility product of calcium fluoride (CaF2(s); fluorite) is 310-11 at 25C. Could a fluoride concentration of 1.0 mg L-1

Finger [1]

The given question is incomplete. The complete question is as follows.

The solubility product of calcium fluoride () is at 25 degrees C. Will a fluoride concentration of 1.0 mg/L be soluble in a water containing 200 mg/L of calcium?

Explanation:

Reaction equation for the given chemical reaction is as follows.

$CaF_{2} \rightleftharpoons Ca^{2+} + 2F^{-}$