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zhuklara [117]
2 years ago
10

Need help with question 1.) I got something wrong but i don’t know hurry ASAP

Chemistry
1 answer:
lana [24]2 years ago
3 0

Vinegar is an heterogeneous mixture

Explanation:

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A square painting has a length of 62 cm.<br><br> What is the area of the painting?<br><br> cm²
svetlana [45]

Answer:3844 cm^2

Explanation:

62 squared since it is a square, and area is base times height

3 0
3 years ago
In a liquid, the energy required to increase the surface of the area by a unit amount is called :a.dipole-dipole force. b.viscos
Sedaia [141]

Answer:

D. Surface tension.

Explanation:

Surface tension is defined as the energy required to increase the surface area of a liquid by a unit amount.

The surface tension of a liquid results from an imbalance of intermolecular attractive forces, the cohesive forces between molecules:

A molecule in a liquid experiences cohesive forces with other molecules in all directions while molecules at the surface of a liquid experiences only net inward cohesive forces.

5 0
3 years ago
Suggest two ways to liquefy the gases.
aleksandr82 [10.1K]
There are two ways to liquefy a gas:

-- Increase the pressure on it.

-- Lower its temperature.

The liquefication is faster and easier if you do both.
3 0
3 years ago
When the reaction mixture is worked-up, it is first washed three times with 5% sodium bicarbonate, and then with a saturated nac
Ann [662]

Solution:

After the reaction of mixture is worked-up Washing three times the organic  with sodium carbonate helps to decrease the solubility of the organic layer into the aqueous layer. This allows the organic layer to be separated more easily.

And then the reaction washed by saturated NACL we have The bulk of the water can often be removed by shaking or "washing" the organic layer with saturated aqueous sodium chloride (otherwise known as brine). The salt water works to pull the water from the organic layer to the water layer.

5 0
3 years ago
Write the difference between the reaction of Calcium and Aluminium with water.
guapka [62]

Answer:

Both gives hydroxides, but

Calcium reacts with water to give calcium hydroxide Ca(OH)2. this product is slightly soluble in water.

Aluminium  is less reactive than Ca, so it reacts with only steam, to give aluminium hydroxide Al(OH)3. This product is insoluble in water.

5 0
3 years ago
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