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EleoNora [17]
3 years ago
11

What are the general characteristics of substances chemists use to separate mixtures into individual substances?

Chemistry
1 answer:
Inessa [10]3 years ago
5 0
Generally, chemists separate components of substances by taking advantage of the properties of the substances that are unique to each one.
For instance, to separate a mixture of salt and stones, a chemist will pour the mixture in water. He does this, because he is taking advantage of the fact that stones will not dissolve in water, only salt will.
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Answer:

A group of dissimilar elements with a net charge remaining is called a polyatomic ion.

Explanation:

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3 years ago
At a certain temperature the rate of this reaction is first order in HI with a rate constant of :0.0632s
Shalnov [3]

Answer : The time taken for the reaction is, 28 s.

Explanation :

Expression for rate law for first order kinetics is given by :

k=\frac{2.303}{t}\log\frac{[A_o]}{[A]}

where,

k = rate constant  = 0.0632

t = time taken for the process  = ?

[A_o] = initial amount or concentration of the reactant  = 1.28 M

[A] = amount or concentration left time 't' = 1.28\times \frac{17}{100}=0.2176M

Now put all the given values in above equation, we get:

0.0632=\frac{2.303}{t}\log\frac{1.28}{0.2176}

t=28s

Therefore, the time taken for the reaction is, 28 s.

8 0
3 years ago
A gas occupies 800ml at a temperature of 27C. What is the volume at 132C?
pishuonlain [190]

V
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/T
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=V
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/T
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​

(900.0 mL) / (300.0 K) = (x) / (405.0 K); x = 1215 mL.

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3 0
3 years ago
Who can tell me the half reaction about cucumber battery
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kykrilka [37]
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