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Tanzania [10]
3 years ago
7

Which of the following is a chemical equation that accurately represents what happens when sulfur and oxygen react to form sulfu

r trioxide? A. Sulfur and oxygen react to form sulfur trioxide. B. S and O2 produce SO3. C. S + O2right-pointing arrow SO3 D. 2S + 3O2 right-pointing arrow 2SO3
Physics
1 answer:
muminat3 years ago
4 0
<span>D. 2S + 3O2 right-pointing arrow 2SO3 Let's look at the 4 options and see what the issues are with each of the wrong ones. A. Sulfur and oxygen react to form sulfur trioxide. * This is just a quick description, but nothing quantitative. How much sulfur? How much oxygen? Are the reactants single atoms or molecules? Not enough information, so this is the wrong choice. B. S and O2 produce SO3. * Just replacing words with element abbreviations does't fix the problem. So it's still wrong. C. S + O2 right-pointing arrow SO3 * This is getting closer. We have the correct symbols for the reactants and product. But the equation doesn't balance. On the left hand side, there are 2 oxygen atoms and on the right hand side, there's 3. Where did the 3rd oxygen atom come from? So it's still wrong. D. 2S + 3O2 right-pointing arrow 2SO3 * This is correct. We know that we're using elemental sulfur and an oxygen molecule on the left hand side. Actually 2 atoms of elemental sulfur and 3 molecules of oxygen gas. And we're producing 2 molecules of sulfur trioxide. And the numbers of each type of atom match in count on both sides. So this is the correct answer.</span>
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Credit: Department of Energy

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2 years ago
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Answer:

Explanation:

Expression for velocity of wave produced in a hanging wire can be given  as follows

Velocity v = \sqrt{\frac{T}{m} }

where T is tension in wire and m is mass of wire per unit length.

In the given case

T = Mg + mg

= Mg

neglecting weight of rope

mass of the rope per unit length

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3 years ago
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Answer:

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3 0
2 years ago
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nordsb [41]
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7 0
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Answer:

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2 years ago
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