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levacccp [35]
2 years ago
13

Does anyone know the answers to these?

Chemistry
1 answer:
Wewaii [24]2 years ago
5 0
Starlight is the answer for 7 and 3 is yellow
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After balancing the following reaction under acidic conditions, how many mole equivalents of water are required and on which sid
nordsb [41]

Answer:

d. 8 moles of H2O on the product side

Explanation:

Hello,

In this case, we need to balance the given redox reaction in acidic media as shown below:

MnO_4^{1-} (aq) + Cl^{1-} (aq) \rightarrow  Mn^{2+} (aq) + Cl_2 (g)\\\\(Mn^{7+}O^{2-}_4)^{1-} (aq) + Cl^{1-} (aq) \rightarrow  Mn^{2+} (aq) + Cl_2 (g)\\\\\\\\(Mn^{7+}O^{2-}_4)^{1-} (aq)+8H^++5e^- \rightarrow Mn^{2+}+4H_2O\\\\2Cl^{1-}\rightarrow Cl_2^0+2e^-\\\\2*[(Mn^{7+}O^{2-}_4)^{1-} (aq)+8H^++5e^- \rightarrow Mn^{2+}+4H_2O]\\\\5*[2Cl^{1-}\rightarrow Cl_2^0+2e^-]\\\\\\\\2(Mn^{7+}O^{2-}_4)^{1-} (aq)+16H^++10e^- \rightarrow 2Mn^{2+}+8H_2O\\\\10Cl^{1-}\rightarrow 5Cl_2^0+10e^-\\

Then, we add the half reactions:

2(Mn^{7+}O^{2-}_4)^{1-} (aq)+16H^++10Cl^{1-} \rightarrow 2Mn^{2+}+8H_2O+5Cl_2^0

Thereby, we can see d. 8 moles of H2O on the product side.

Best regards.

4 0
3 years ago
The primary gas in a volocano is?
stiv31 [10]

Answer:

By far the most abundant volcanic gas is water vapor, which is harmless. However, significant amounts of carbon dioxide, sulfur dioxide, hydrogen sulfide and hydrogen halides can also be emitted from volcanoes

Explanation:

4 0
3 years ago
Read 2 more answers
Which one is right for brainliest
SVEN [57.7K]
I believe it is the second option
6 0
3 years ago
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Balance the equation: <br> CaC2 + O2 → Ca + CO2
Amiraneli [1.4K]

Answer:

cac2+2o2 = ca + 2co2

Explanation:

mark me brainliest sofia

6 0
3 years ago
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Which of the following hypotheses is testable by using the scientific method?
Troyanec [42]

Answer:

d

Explanation:

<em>The only hypothesis that is testable using the scientific method would be that </em><em>all swans are white.</em>

The scientific method involves a series of steps through which scientists are able to arrive at a conclusion about the natural world. The steps include observation, drawing up falsifiable hypotheses from observations, testing the hypotheses using experiments, and then arriving at conclusions based on the data gathered from the experiment.

There is no way to test the mortality of all men as this will require harming humans in order to prove their mortality. The best color is also subjective as individuals have their preference when it comes to color. There is no way to prove the hypothesis that no life exists on other planets as this will require visiting other planets, a gesture that is practically impossible. That swimming is fun can also be subjective. Not everyone finds swimming interesting.

<u>The hypothesis that all swans are white can be tested by sampling the population of swans in different areas and recording their colors objectively.</u>

<em>Hence, the correct option is </em><em>d</em><em>.</em>

7 0
3 years ago
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