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chubhunter [2.5K]

4 years ago

13

What does Vitamin D do for the body?

2 answers:

Arte-miy333 [17]4 years ago

7 0

C. Controls the way your body uses calcium

-BARSIC- [3]4 years ago

5 0

Answer:

C.

Explanation:

Vitamin D is a molecule that is essential in the transport of the Calcium to the bones, it can be obtained from direct contact with the sun or can be obtained directly from the diet. Besides transporting the Calcium to the bones, also participates in regulation of calcium and fosfate in the kidneys and intestine promoting the calcium reabsortion at renal level and calcium absortion at intestinal level. Also modulates the inmune system, promoting the maturation of monocytes to macrophages, improving the inmune response.

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a 68 ml aliquot of a 1.4M solution is diluted to a total volume of 288 ml a 144 ml portion of that solution is diluted by adding

vova2212 [387]

Answer:

$0.1501\ \text{M}$

Explanation:

$68\times 10^{-3}\times 1.4=0.0952\ \text{mol}$

Concentration in solution

$\dfrac{95.2}{288}=0.3305\ \text{M}$

After dilution

$144\times 0.3305=47.592\ \text{mmol}$

Total volume $=144+173=317\ \text{mL}$

Final concentration $=\dfrac{47.592}{317}=0.1501\ \text{M}$

The final concentration is $0.1501\ \text{M}$

6 0

3 years ago

Given the reaction: 2 NO2 (g) → N2O4 (g) the rate of reaction was slow with 2.00 moles of NO2 in a 2.00 L container at 1 atm and

astra-53 [7]

Answer:

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Explanation:

5 0

2 years ago

How many moles of NaOH is needed to neutralize 45.0ml of 0.30M H2SeO4?

kiruha [24]

Answer:

0.027 mole of NaOH.

Explanation:

We'll begin by obtaining the number of mole H2SeO4 in 45mL of 0.30M H2SeO4

This is illustrated below:

Molarity of H2SeO4 = 0.3M

Volume of solution = 45mL = 45/1000 = 0.045L

Mole of H2SeO4 =...?

Mole = Molarity x Volume

Mole of H2SeO4 = 0.3 x 0.045

Mole of H2SeO4 = 0.0135 mole

Next, the balanced equation for the reaction. This is given below:

H2SeO4 + 2NaOH –> Na2SeO4 + 2H2O

From the balanced equation above,

1 mole of H2SeO4 required 2 moles of NaOH.

Therefore, 0.0135 mole of H2SeO4 will require = 0.0135 x 2 = 0.027 mole of NaOH.

Therefore, 0.027 mole of NaOH is needed for the reaction.

8 0

4 years ago

Read 2 more answers

How’s life going<br> Yes I would like to know<br> No guys this is not for school

Murrr4er [49]

Answer:

Good.

Explanation:

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3 0

3 years ago

Read 2 more answers

Where would you expect to find carbon? Check all that apply.

dezoksy [38]

Answer:

in all living organisms

in organic compounds

Explanation:

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3 0

4 years ago