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3 years ago

One cup of fresh orange juice contains 115 mg of ascorbic acid (vitamin c, c6h8o6). given that one cup

1 answer:

4 0

The question is incomplete. Complete question is read as:
'<span>One cup of fresh orange juice contains 115 mg of ascorbic acid (vitamin C, C6H8O6). Given that one cup = 218.0 mL calculate the molarity of vitamin C in organic juice.'
..........................................................................................................................
Answer:
Given: weight of solute (ascorbic acid) = 115 mg = 0.115 g
Volume of solution = 218.0 mL = 0.218 L
Molecular weight of ascorbic acid = 176.12 g/mol.

Now, Molarity = </span> $\frac{\text{weight of solute(g)}}{\text{Molecular weight X Vol. of solution(l)}}$
= $\frac{\text{0.115}}{\text{176.12 X 0.218}}$
<span> = 0.002995 mol/dm3

Answer: Molarity of solution = </span>0.002995 mol/dm3<span>

</span>

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Which of the following statements is a part of John Dalton’s atomic theory?

Phantasy [73]

Answer:

i think it is all atoms of all elements are exactly alike and have the same mass

Explanation:

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3 years ago

A 28. 0 ml sample of vinegar, which is an aqueous solution of acetic acid, ch3cooh, requires 21. 5 ml of 0. 550 m naoh to reach

Fittoniya [83]

Concentration of vinegar sample of 28mL which requires 21. 5 ml of 0.550 M NaOH to reach the endpoint in a titration is 0.42M.

<h3>How do we calculate the concentration of Vinegar?</h3>

Concentration of vinegar in the titration method will be used by using the below equation:

M₁V₁ = M₂V₂,

M₁ & V₁ are the molarity and volume of acetic acid.
M₂ & V₂ are the molarity and volume of vinegar sample.

By putting values on above equation from the question, we get

M₂ = (0.55M)(21.5mL) / (28mL) = 0.42 M

Hence, required concentration of vinegar is 0.42M.

To know more about concentration, visit the below link:

brainly.com/question/14469428

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2 years ago

Periodic table the first row of elements fits in the period blank after the element blank the second row of elements fits in per

Bezzdna [24]

Answer:

The first row fits in period 2

The second row fits in period 3

Explanation:

Elements arranged vertically in the periodic table in groups that share similar chemical properties.

Elements are also organized horizontally in rows or periods

The length of each period is determined by the number of electrons that can occupy the sublevels being filled in that period.

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3 years ago

A fertilizer is 60.9% ammonium phosphate. What is the percent P in the sample? Answer in units of %

PtichkaEL [24]

Answer:- 12.7%

Solution:- It says, ammonium phosphate is 60.9%. It means if we assume 100 g of the sample then there is 60.9 g ammonium phosphate in it.

Formula of ammonium phosphate is $(NH_4)_3PO4$ and it's molecular weight is 149 grams per mol. There is only one P in the formula and so the mass of P in 149 g of ammonium phosphate is 31 g(atomic mass of P).

Now, we could use the proportions to find out the mass percentage of P in the sample.

31 g P is present in 149 g of ammonium phosphate, how many grams of P would be present in 60.9 g of ammonium phosphate. Let's set the proportions as:

$\frac{31}{149}=\frac{x}{60.9}$

$x=\frac{31(60.9)}{149}$

$x=12.7$

This 12.7 g of phosphorous is present in 100 g of the sample means there is 12.7% phosphorous in the sample.

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3 years ago

Use the Henderson-Haaselbach equation based on the buffer equilibrium reaction to complete the statements below.

zloy xaker [14]

Hi, Again!

The answer to the drop downs are

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3 years ago