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3 years ago

The process by which rocks break down as a result of chemical reactions is called ----

1 answer:

4 0

The process by which rocks break down as a result of chemical reactions is called chemical weathering. Weathering is the breaking down of rocks, and chemical indicates that the chemical reactions cause the breaking-down. I hope this helps and feel free to rate my answer Brainliest!

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(50 points help ASAP it’s due 10mins)About how much more TE does it take to change the temperature of 1 kg of water compared to

horrorfan [7]

Answer:c

Explanation:

6 0

3 years ago

You are given the following boiling point data. Which of the liquids would you expect to have the highest vapor pressure at room

Leokris [45]

Answer:

Diethyl ether

Explanation:

vapor pressure - the pressure exerted by the gaseous molecules on the walls of the container , is called its vapor pressure.

The compound with higher boiling point , will have lower vapor pressure ,

and the compound with lower boiling point , will have higher vapor pressure.

Hence, Boiling point and vapor pressure have inverse relation.

The vapor pressure and boiling point both, depends on the inter molecular interactions , i,e, the interaction between the molecules.

Since, the compound with stronger inter molecular interactions, will not easily convert to gas, hence will have higher boiling point between , therefore , its vapor pressure would be less.

But the compound with less inter molecular interactions , can easily vaporize to convert to gaseous state and hence will have lower boiling point, therefore, its vapor pressure would be higher .

Among all the options , diethyl ether have lowest boiling point , hence, will have highest vapor pressure , at room temperature.

6 0

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.

7 0

4 years ago

PROJECT: KITCHEN TOOLS

docker41 [41]

Answer:

Explanation:2+2=4

7 0

4 years ago

Descibe the methods you will use to identify and isolate yeast and bacteria in a pineapple juice

zalisa [80]

Answer:

The correct answer would be the use of differential and selective growth medium.

Explanation:

The mixed colonies states of certain species can be developed on the differential and specific media relying on the morphology saw in the general media. These types of selective and differential media will allow certain microorganisms to grow only and not all the rest species present on the media.

It will help in recognizing species present in the mixed colonies present in such a growth medium. Different tests like catalase can be performed to dispose of certain choices not long before the utilization of the differential and particular media.

Thus, the correct answer would be the use of differential and selective growth medium.

4 0

3 years ago