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vfiekz [6]
3 years ago
15

The extraction of pure copper is expensive. Give one reason why

Chemistry
2 answers:
stiv31 [10]3 years ago
8 0
The ore contains some metals which need alot of energy to get out and energy is expensive
goblinko [34]3 years ago
3 0
Because it requires lots of electricity to turn it into an aqueous solution so that electrolysis can be performed on it.
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Directions: Perform the Assessment in Module 7 because that will serve as your Performance Task for Module 5, 6 & 7. Kindly
garik1379 [7]

please put your question completely....

8 0
3 years ago
What is the molarity of a stock solution if 60 mL were used to make 150 ml<br>of a .5M solution? ​
olga2289 [7]

The molarity of the stock solution is 1.25 M.

<u>Explanation:</u>

We have to find the molarity of the stock solution using the law of volumetric analysis as,

V1M1 = V2M2

V1 = 150 ml

M1 = 0.5 M

V2 = 60 ml

M2 = ?

The above equation can be rearranged to get M2 as,

M2 = $\frac{V1M1}{V2}

Plugin the values as,

M2 = $\frac{150 \times 0.5}{60}

       = 1.25 M

So the molarity of the stock solution is 1.25 M.

4 0
3 years ago
How many electron dots should As have?
Effectus [21]

Answer:

5

Explanation:

8 0
3 years ago
Which of the following represents the correct ranking in terms of increasing boiling point? A. n-butane &lt; 1-butanol &lt; diet
bonufazy [111]

Answer:

The answer to your question is: letter E

Explanation:

Normally, the correct order of boiling points is:

                     Alcohols > Ketones > Ether > Alkane

Then

A. n-butane < 1-butanol < diethyl ether < 2-butanone

B. n-butane < 2-butanone < diethyl ether < 1-butanol

C. 2-butanone < n-butane < diethyl ether < 1-butanol

D. n-butane < diethyl ether < 1-butanol < 2-butanone

E. n-butane < diethyl ether < 2-butanone < 1-butanol

     (- 1°C)     <    34.6°C         <  79.64°C      <  117.7°C

6 0
3 years ago
How many meters did a car travel if it went 65mi/hr for 4.5 hours?
Law Incorporation [45]

Answer:

292.5

Explanation:

65x4=260

65 divded  by 2 = 32.5

260+32.5=292.5

6 0
3 years ago
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