All categories

3 years ago

Hello rainfaeries ~help me with these questions

Chemistry

2 answers:

zimovet [89]3 years ago

7 0

Answer:

Ans) Calcium hydroxide is produced by the reaction of water and calcium oxide also called slaked lime.

CaO + H2O → Ca(OH)

Ans) When Calcium Hydroxide reacts with water (H2O) and absorbs carbon dioxide (CO2) from the environment, it produces Calcium Carbonate (CaCO3), which creates a hard coating on the walls. That's why Calcium Hydroxide is used in white washing.

goblinko [34]3 years ago

4 0

Explanation:

Calcium hydroxide is produced commercially by treating lime with water: CaO + H2O → Ca(OH) In the laboratory it can be prepared by mixing aqueous solutions of calcium chloride and sodium hydroxide.

Quicklime is used for whitewashing as it produces calcium hydroxide (CaOH) when it reacts with water (H2O) and absorbs carbon dioxide (CO2) from the environment, as a result, it produces calcium carbonate (CaCO3) which creates a hard coating on the walls.

You might be interested in

What type of resource cooks food on a stove

Sindrei [870]

I think it may be a pan or a pot

7 0

3 years ago

Read 2 more answers

Calculate the density of a solid that has a volume of 2cm3 and a mass of 3g

katrin2010 [14]

Answer:

The density is 6

Explanation:

p = m × v

p = 3 × 2

p = 6

Hope this helped! :)

8 0

3 years ago

A student is performing an experiment to study thermodynamics. The student mixes citric acid and sodium bicarbonate in a calorim

seraphim [82]

Explanation :

In thermodynamics, a system is region or part of space which is being studied and observed while the surrounding is the region or space around the system which interacts with the system.

Here in the experiment ,system which is observed is reaction or changes when citric acid and sodium bicarbonate are mixed together. And the mixing is carried out in the calorimeter which serves as a surrounding around the system.

The reason behind the using the calorimeter is measure the energy change occurring during the reaction.

5 0

4 years ago

The gas phase decomposition of dimethyl ether at 500 °C CH3OCH3(g) → CH4 (g) + H2 (g) + CO (g) is first order in CH3OCH3 with a

liubo4ka [24]

Answer:

Check the explanation

Explanation:

Kindly check the attached image below to see the step by step explanation to the question above.

8 0

4 years ago

We can prove a theory to be correct by performing the right experiment. False or true

eimsori [14]

Answer:

true

Explanation:

because if you find the right answer that proves the theory to be correct.

4 0

3 years ago

Hello rainfaeries ~help me with these questions ​

Hello rainfaeries ~help me with these questions