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3 years ago

What is buffer solution?

Chemistry

1 answer:

Olenka [21]3 years ago

6 0

A buffer solution is a aqueous solution consisting of a mixture of a weak acid and it conjugate base, or vice versa.

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How are diffusion and osmosis different?

elena55 [62]

Osmosis is about the movement of water molecules and diffusion is about the movement of substances

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3 years ago

2. The Food and Drug Administration (FDA) mandates that all vinegar sold in the United States must have a minimum concentration

Scilla [17]

Answer:

The minimum molarity of acetic acid in vinegar according to given standards is 0.6660 mol/L.

Explanation:

4% acetic acid by mass means that 4 gram of acetic acid in 100 g solution.

Given that density of the vinegar is same is that of water = 1 g/mL

Mass of the vinegar solution = 100 g

Volume of the vinegar solution = V

$Density=\frac{Mass}{Volume}$

$1 g/mL=\frac{100 g}{V}$

V = 100 mL = 0.1 L

Moles of acetic acid = $\frac{4 g}{60.052 g/mol}=0.0666 mol$

$Molarity=\frac{\text{Moles of solute}}{\text{Volume of solution(L)}}$

$M=\frac{0.0666 mol}{0.1 L}=0.6660 mol/L$

The minimum molarity of acetic acid in vinegar according to given standards is 0.6660 mol/L.

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3 years ago

Which statement correctly describes the location and charge of the electrons in an atom?

maxonik [38]

Answer:

Explanation:

The electrons revolve around the nucleus and they contain negative charge

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3 years ago

BRAINLIESTTT ASAP!!! PLEASE ANSWER!

sladkih [1.3K]

If the item or substance has changed into a state where you are able to change it back such as:

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3 years ago

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Will bromine water and magnesium react

bazaltina [42]

No. Magnesium, and Bromine are a chemical compound when put together.
Neither Bromine, nor Magnesium react with any sort of water.

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3 years ago