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3 years ago

Why doesn’t a broken wineglass spontaneously fix itself, from a thermodynamic point of view?

Chemistry

2 answers:

deff fn [24]3 years ago

7 0

Answer:

C.Fixing a wineglass requires a large decrease in entropy.

Explanation:

Decrease in entropy is a non spontaneous process.

Entropy is the measure of randomness or disorder. For a process to be spontaneous the disorder or the randomness should increase. In a spontaneous process entropy increase or becomes positive.

A broken wine glass has more disorder than an unbroken glass. So a broken wine glass does not spontaneously fix itself as that would lead to a decrease in entropy.

Anarel [89]3 years ago

4 0

C. Fixing a wineglass requires a large decrease in entropy.

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Read 2 more answers

Substance X is a compound containing 632mg of manganese and 368mg of oxygen. Substance X is shown

defon

The empirical formula : MnO₂.

<h3>Further explanation</h3>

Given

632mg of manganese(Mn) = 0.632 g

368mg of oxygen(O) = 0.368 g

M Mn = 55

M O = 16

Required

The empirical formula

Solution

You didn't include the pictures, but the steps for finding the empirical formula are generally the same

Find mol(mass : atomic mass)

Mn : 0.632 : 55 = 0.0115

O : 0.368 : 16 =0.023

Divide by the smallest mol(Mn=0.0115)

Mn : O =

$\tt \dfrac{0.0115}{0.0115}\div \dfrac{0.023}{0.0115}=1\div 2$

The empirical formula : MnO₂

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3 years ago

A manufacturer of bicycles has 4250 wheels, 2755 frames and 2255 handlebars.

Gemiola [76]

Answer:

The answer to your question is a) 2125 bicycles

c) No wheels, 630 frames, 130 handlebars.

Explanation:

Data

4250 wheels

2755 frames

2255 handlebars

- To manufacture a bicycle we need:

2 wheels x bicycle

1 frame

1 handlebar

- Divide the number of wheels

4250/ 2 = 2125 bicycles / wheels

2755 = frames

2255 = handlebars

As the number of pairs of wheels is lower than the number of frames and the number of handlebars we conclude that we can only manufacture 2125 bicycles.

No wheels

Frames = 2755 - 2125 = 630

Handlebars = 2255 - 2125 = 130

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