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Aleksandr-060686 [28]
3 years ago
12

When a match is lit, sulfur (S8) reacts with oxygen to release energy and form sulfur dioxide, SO2. Write the balanced equation

for this reaction.
Chemistry
1 answer:
beks73 [17]3 years ago
8 0

Answer: S8 + 8O2 => 8SO2

Explanation: The equation is now balanced. Both Sulfur have 8 atoms in the reactant and product side. Oxygen have 16 atoms on each side.

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Which of the following is not a property of water?
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Answer:

A) hydrogen bonds cause a high surface tension = FALSE

Explanation:

The rest are correct

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If the copper cube had a mass of 28.7 grams and a volume of 3.2 mL, what would its density be?
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Answer:

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3 0
3 years ago
Why is it better to conduct an experiment more than once?
lilavasa [31]

The first reason to repeat experiments is simply to verify results. Different science disciplines have different criteria for determining what good results are. Biological assays, for example must be done in at least triplicate to generate acceptable data. Science is built on the assumption that published experimental protocols are repeatable.


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3)      Refining experimental observations is another reason to repeat. Maybe you did not follow the progress of the reaction like you should have.


4)      Another reason to repeat experiments is to study and/or improve them in way. In the synthetic chemistry laboratory, for example, there is always a desire to improve the yield of a synthetic step. Will certain changes in the experimental conditions lead to a better yield? The only way to find out is to try it! The scientific method informs us that it is best to only make one change at a time.


5)  The final reason to repeat an extraction, chromatographic or synthetic protocol is to produce more of your target substance. This is sometimes referred to scale-up.

8 0
2 years ago
Use the following image to answer the following questions. A student was performing an experiment using two identical cups made
Anettt [7]

Answer:

The water will eventually become the same temature (A)

3 0
2 years ago
The Earth's mantle is
EleoNora [17]

Answer:

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So we can say the mantle is cooler than both the crust and the core.

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