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2 years ago

Polarity of water. Which is the correct answer?

Chemistry

2 answers:

larisa [96]2 years ago

4 0

Answer:

does all of these above

andrew11 [14]2 years ago

3 0

Try All of the above.. it might be the right answer

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You have 100 mL of a solution of benzoic acid in water; the amount of benzoic acid in the solution is estimated to be about 0.30

dimaraw [331]

Answer:

0.00370 g

Explanation:

From the given information:

To determine the amount of acid remaining using the formula: $\dfrac{(final \ mass \ of \ solute)_{water}}{(initial \ mass \ of \ solute )_{water}} = (\dfrac{v_2}{v_1+v_2\times k_d})^n$

where;

v_1 = volume of organic solvent = 20-mL

n = numbers of extractions = 4

v_2 = actual volume of water = 100-mL

k_d = distribution coefficient = 10

∴

$\dfrac{(final \ mass \ of \ solute)_{water}}{0.30 \ g} = (\dfrac{100 \ ml}{100 \ ml +20 \ ml \times 10})^4$

$\dfrac{(final \ mass \ of \ solute)_{water}}{0.30 \ g} = (\dfrac{100 \ ml}{100 \ ml +200 \ ml})^4$

$\dfrac{(final \ mass \ of \ solute)_{water}}{0.30 \ g} = (\dfrac{1}{3})^4$

$\dfrac{(final \ mass \ of \ solute)_{water}}{0.30 \ g} = 0.012345$

Thus, the final amount of acid left in the water = 0.012345 * 0.30

= 0.00370 g

3 0

3 years ago

Only positive ions have a charge. true or false?

Elis [28]

Answer:

true

Explanation:

5 0

2 years ago

Please help me match these to the boxes

mamaluj [8]

Answer:

answers from left to right:

decomposition,decomposition,synthesis,replacement,synthesis,replacement

Explanation:

6 0

3 years ago

How many atoms are in 54.6 grams of nickel

sergij07 [2.7K]

5.60*10²³ is the answer First you find the molar mass of nickel then you you turn grams to moles to atoms and boom there's your answer.

4 0

3 years ago

Number of atoms in calcium carbonate

lakkis [162]

Answer:

5 Atoms

Explanation

We have one atom of Calcium, One Atom of Carbon and three of Oxygen

3 0

3 years ago