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soldier1979 [14.2K]
2 years ago
14

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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Find all the square roots<br>225​
KiRa [710]

Answer: 15

The square root of 225 is 15.

Explanation:

https://api-project-1022638073839.appspot.com/questions/how-do-you-find-the-square-root-of-1849#642333

5 0
3 years ago
Elements K and L have 12 and 17 protons respectively. If k has 24 neutrons and L has 36, in a tabular form identify the number o
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5 0
3 years ago
Which factor is defined as the average kinetic energy of a substance?
AveGali [126]

A. mass of the substance

4 0
4 years ago
Which climate conditions will cause the fastest chemical weathering of granite, sandstone, and shale
djyliett [7]

The correct answer is - tropical wet.

The tropical wet climate conditions are the ones that will enable the quickest chemical weathering of the granite, sandstone, and shale. That is due to the constant heat, high humidity, and daily rain pours.

Hope this helps :D

7 0
4 years ago
Read 2 more answers
Jeff used an equal arm balance to weigh a 4.312 g sample of sodium chloride. Which of these measurements made by Jeff is the mos
Damm [24]

Option B: 4.3

There are following rules for rounding off numbers:

1. If the rounding digit has digit less than 5 (1,2,3 and 4) to its right, all the digits on right side of the rounding digit will drop out.

2. If the rounding digit has digit equal and greater than 5 (5,6,7,8 and 9) to its right, one is added to the rounding digit.

Jeff has to weigh 4.312 g sample of NaCl. To round off the underline number 4.<u>3</u>12, check for the digit right to it. It has 1, which is less than 5 thus according to the Rule 1, all the digits on right side of the rounding digit will drop out and the number gets rounded off to 4.3.

Therefore, 4.3 is most accurate measurement by Jeff.

7 0
3 years ago
Read 2 more answers
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