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3 years ago

Please help! Will give brainliest!!!

Chemistry

1 answer:

Jlenok [28]3 years ago

5 0

D. Liquid Nitrogen is much colder than Water.

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What would happen to the boiling point of water at 8,000 m above sea level, where air pressure is lower?

mario62 [17]

it will get warm or spread out into the water or

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3 years ago

Vinegar is a chemical used in cooking, cleaning and other common experiences. A 0.1 M solution of vinegar in water has a [H+] of

Ymorist [56]

Answer: a) pH of a 0.1 M vinegar solution is 2.9

b) It is an acid as pH is less than 7

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

Acids have pH ranging from 1 to 6.9, bases have pH ranging from 7.1 to 14 and neutral solutions have pH equal to 7.

As vinegar is a weak acid, its dissociation is represented as;

$CH_3COOH\rightleftharpoons H^+CH-3COO^-$

cM 0 0

$c-c\alpha$ $c\alpha$ $c\alpha$

So dissociation constant will be:

$K_a=\frac{(c\alpha)^{2}}{c-c\alpha}$

Give c= 0.1 M

$[H^+]=c\times \alpha$

$[H^+]=0.1\times \alpha$

$1.3\times 10^{-3}=0.1\times \alpha$

$\alpha=0.013$

Also $pH=-log[H^+]$

$pH=-log[1.3\times 10^{-3}]=2.9$

Thus pH of a 0.1 M vinegar solution is 2.9

As pH is less than 7, it is an acid.

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4 years ago

PLS HELP ASAP NO LINKS

Elina [12.6K]

Answer:

.biology and maybe physics

3 0

3 years ago

Read 2 more answers

What does the state symbol (aq) mean when written after a chemical

vlabodo [156]

B. it means the compound is dissolved in water

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3 years ago

The conversion of one mole of water from the solid to the liquid phase at the phase transition temperature requires the absorpti

dybincka [34]

Answer: heat

Explanation:

Water at solid is called ICE. This ice absorbs HEAT from its environment, and undergoes a process called melting to convert to liquid, this transition occurs at the melting point of ice

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3 years ago