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2 years ago

Describe a chemical test for water-

Chemistry

1 answer:

Mila [183]2 years ago

6 0

Answer:

Anhydrous copper (II) sulphate is white because it has no water in it. When drops of water are added, copper (II) sulphate turns blue. This colour change can be used to detect the presence of water (or water vapour).

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WILL RECIEVE MEDAL!If 1.2 kilograms of rust form on a bridge in five days, what should be the rate of reaction in grams per hour

serious [3.7K]

<span>Since the answer is in grams, kilograms must first be converted to grams. A kilogram is equivalent to 1000 grams. Therefore, multiply 1.2 kilograms by 1000 and you get 1,200 grams. Then, calculate the number of hours in 5 days. Each day is 24 hours and 24 hours multiplied by 5 days equals 120 hours. Lastly, since the answer is in grams per hour, divide 1,200 grams by 120 hours and the resultant rate of reaction is 10 g/hr.</span>

8 0

3 years ago

Which pair of elements would most likely bond to form a covalently bonded compound?

anastassius [24]

Answer:

two nonmetal elements join together to form covalent compounds

3 0

3 years ago

Gas Law- please help!!!

jekas [21]

The pressure of the carbon dioxide will be 0.09079 atm.

<h3>What is partial pressure?</h3>

The pressure exerted by the individual gas is known as partial pressure.

The partial pressure is given as

$\rm P_{Total} = P_1 + P_2 + ...$

In a mixture of carbon dioxide and oxygen, 40.0% of the gas pressure is exerted by oxygen.

If the total pressure is 115 mmHg.

The total pressure in atm will be

P = 115 mmHg

P = 0.15132 atm

We have

$\rm P_T \ \ \ = P_{O_2} + P_{CO_2}\\\\0.15132 \ \ = 0.4 \times 0.15132 +P_{CO_2}\\\\ P_{CO_2} = 0.09079\ atm$

Then the pressure of the carbon dioxide will be 0.09079 atm.

More about the partial pressure link is given below.

brainly.com/question/13199169

#SPJ1

8 0

2 years ago

True or False- The parts of a mixture keep their own properties when they are combined.

ICE Princess25 [194]

It is true yes :) happy to help

4 0

3 years ago

A ______ solution contains more dissolved solute than a saturated solution at the same temperature

NeTakaya

Answer:

i believe the answer is supersaturated

Explanation:

5 0

3 years ago