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balu736 [363]
3 years ago
6

Water boiling and turning into steam is a chemical or physical change?

Chemistry
2 answers:
olga2289 [7]3 years ago
8 0

Answer:

physical change

Explanation:

andrezito [222]3 years ago
5 0

Answer:

Explanation:

It's a physical change.

The water does not change its chemical composition. No bonds are rearranged. The shape of the molecules remains the same. Nothing has altered except the distance between molecules and the motion of them.

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A buffer solution contains 0.120M acetic acid and 0.150M sodium acetate.
Dvinal [7]
A. M x L = moles. 
<span>b. CH3COOH + NaOH ==> CH3COONa + H2O </span>
<span>I...6 mmols....0.......7.5 mmoles </span>
<span>C... 0........0.51 mmols..0 </span>
<span>E...6-0.511 ....0.......7.5+0.511 </span>

<span>I stands for initial </span>
<span>C stands for change. </span>
<span>E stands for equilibrium. </span>
<span>Just divide mmoles by 1000 to convert to moles. I work in mmoles because I get tired of writing those zeros. </span>

<span>c. done as in b.</span>
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3 years ago
What would the empirical formula be for the molecular compound CoH904?
Mashutka [201]
It would be the same thing if the Co does not have a number with it because it can’t reduce
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2 years ago
In a redox reaction, reduction is defined by the:
jonny [76]

Answer:

C. Gain in electron(s) resulting in a decrease of oxidation number.

Explanation:

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Reduction in terms of redox reaction is the specie that accepts electron(s) and gets "reduced" since its oxidation state has been reduced.

For example

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The above reaction is an example of reduction reaction taking place in a redox reaction. We can see that Chlorine oxidation state was changed from (0) to (-1) state.

5 0
3 years ago
What is a control group?
Arte-miy333 [17]

Answer:

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Explanation:

If this isnt what your looking for let me know, there wasnt alot of context.

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