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AlladinOne [14]
2 years ago
12

CuSO4 . 5H2O is dehydrated to form Copper (ii) sulfate. Is this a physical or chemical change? Explain.

Chemistry
1 answer:
Paraphin [41]2 years ago
3 0

Answer:

It is a physical change.

Explanation:

• This is because when anhydrated copper (ii) sulfate is heated, the water evaporates to form anhydrous copper (ii) sulfate.

• evaporation is a physical change

.

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The alcohol product contains two different types of hydroxyl groups. Why does the polymer-supported reaction with methanol conve
SVETLANKA909090 [29]

Answer:

The other may not be free.

Explanation:

In the polymer-supported reaction with methanol, the reaction will undergo at one hydroxyl group because others may not be free due to bonding with other molecules. The hydroxyl groups could be bonded with the polymer with the help of hydrogen bonding of molecules. The hydroxyl group has to be bonded to only the compatible molecules and free molecules.

7 0
3 years ago
What is used up in and stops a chemical reaction?
frutty [35]

Answer:What is used up in and stops a chemical reaction? (a) percent yield (b) limiting reactant (c) theoretical yield (d) excess reactant

The correct option is (b)

Explanation:

A chemical reaction is a chemical combination,rearrangement or disintegration of chemical substance(s) (called reactants) to form new chemical substance(s) (called products).

A limiting reactant is the reactant that is totally used up during the course of a reaction. When this reactant is used up, it limits the amount of products formed and eventually stops the chemical reaction.

Explanation:

The limiting reagent is the reactant that is used up completely. This stops the reaction and no further products are made. ... This method is most useful when there are only two reactants. The limiting reagent can also be derived by comparing the amount of products that can be formed from each reactant.

hope this helps have a nice day❤️

6 0
3 years ago
When a drawing of a circle made in the center of a piece of paper with a black marker gets wet, the marker bleeds, and as the wa
Ahat [919]

Answer:

Chromatography

Explanation:

Chromatography is a technique for separating mixtures that involves the use of a moving liquid and filter paper. The solvent travels through the spots on the paper, taking the chemicals away in the opposite direction. If the solvent combination has been properly chosen, each of them will move at a different velocity than the others.

8 0
3 years ago
The chemical standard for the quantity of a mole is based on which substance?
alexandr402 [8]
A mole is mean the atomic number of 12 grams of carbon 12.
3 0
3 years ago
A blue whale has a length of 28,578 millimeters. What is the length of a blue whale in kilometers? Show your work below by writi
kotegsom [21]

Answer:

Length of whale in km = 0.028578 km

Explanation:

Given:

Length of whale = 28,578 millimeter

Find:

Length of whale in km

Computation:

We know that;

1 km = 1,000,000 mm

So,

Length of whale in km = 28,578 / 1,000,000

Length of whale in km = 0.028578 km

6 0
3 years ago
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