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Sidana [21]
3 years ago
15

Which statement correctly describes a solution

Chemistry
2 answers:
attashe74 [19]3 years ago
7 0

Answer:

d. It would turn phenolphthalein pink.

Explanation:

Nostrana [21]3 years ago
7 0
D. Because

Hope it helps
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What is the oxidation state of Hydrogen in H20<br><br> +2<br> +1<br> -2<br> -1
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<h3>What is the oxidation number of oxygen in H2O?</h3>

Oxygen almost always has an oxidation number of -2, except in peroxides (H 2 O 2) where it is -1 and in compounds with fluorine (OF 2) where it is +2. Hydrogen has an oxidation number of +1 when combined with non-metals, but it has an oxidation number of -1 when combined with metals.

<h3><em>Sure hoep this helps you :)</em></h3>
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2 years ago
2NaCl + F2 yields 2NaF + Cl2
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3 years ago
How did scientists solve the nitrogen problem?
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Unfortunately, we have not fully solved the 'nitrogen problem'. To do this, we must halve the amount of nitrogen we dump into the environment by mid-century or our ecosystems will face epidemics of toxic tides, lifeless rivers, and dead oceans. And that to do that will require, among other things, almost doubling the efficiency of nitrogen use on the world’s farms.

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3 years ago
When is potential energy transformed into kinetic energy
grin007 [14]
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3 years ago
Calculate the enthalpy of formation of butane, C4H10, using the balanced chemical
melisa1 [442]

Answer:

-125.4

Explanation:

Target equation is 4C(s) + 5H2(g) = C4H10

These are the data equations for enthalpy of combustion

  1. C(s) + O2(g) =O2(g) -393.5 kJ/mol * 4
  2. H2(g) + ½O2(g) =H20(l) = 285.8 kJ/mol * 5
  3. 2CO2(g) + 3H2O(l) = 13/2O2 (g) + C4H10 - 2877.1 reverse

To get target equation multiply data equation 1 by 4; multiply equation 2 by 5; and reverse equation 3, so...

Calculate 4(-393.5) + 5(-285.8) + 2877.6 and you should get the answer.

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3 years ago
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