3 years ago

What happens when Aluminium metal is added to copper sulphate solution

1 answer:

8 0

Answer:

The colour of the solution will change from blue to transparent and copper will be observed as a layer on the Aluminium piece.

Explanation:

The colour of the solution will change from blue to transparent and copper will be observed as a layer on the Aluminium piece.

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What is the percent mass/volume of sodium chloride solution made by dissolving 5.0 grams of sodium chloride in 40.0 ml of soluti

Delvig [45]

$C_{p}=\frac {5g*100\%}{40ml}=12.5\%[\frac{m}{V}]$

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3 years ago

Sticky question: how do you separate molecules that are attracted to one another?.

lions [1.4K]

Answer:

Chromatography uses chromatography paper which is filter paper that is made of cellulose, a polymer. Cellulose is polar, therefore it attracts water molecules, as well as other polar substances. As the solvent reacts with the paper, it competes for the attraction of the molecules being separated.

Explanation:

hope it helps

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2 years ago

If you wanted to make .5 L of a 1 mole/L (M) of MgSO4 solution, how many grams of MgSO4 would you use?

tino4ka555 [31]

Answer:

0.5 grams

Explanation:

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3 years ago

What is the empirical formula for a substance if a 201.6 g sample of it contains 54.0 grams of nitrogen, 15.0 grams of hydrogen,

jeyben [28]

The empirical formula of the substance would be $NH_4Cl$

<h3>Empirical formula calculation</h3>

The constituents of the compound are as follows:

N = 54/201.6 = 26.78% = 26.78/14 = 1.91 moles

H = 15/201.6 = 7.44% = 7.44/1 = 7.44 moles

Cl = 132.6/201.6 = 65.48% = 65.48/35.5 = 1.84 moles

Divide the number of moles by the smallest"

N = 1.91/1.84 = 1

H = 7.44/1.84 = 4

Cl = 1.84/1.84 = 1

Thus, the empirical formula is $NH_4Cl$

More on empirical formula can be found here: brainly.com/question/14044066

#SPJ1

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2 years ago

Which .1 M solution has a pH greater than 7

ElenaW [278]

Answer:

KOH for which PH= 13

Explanation:

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3 years ago