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Korvikt [17]
3 years ago
11

Calculate the number of moles of C in the hydrocarbon.

Chemistry
1 answer:
pochemuha3 years ago
6 0

Answer:

Ummmmmmm

Explanation:

This might help c3h7

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Margarita [4]

Answer:

D

Explanation:

5 0
3 years ago
How many milliliters of a 2.00 M KBr are needed to prepare 250.0 mL of 0.60 M KBr?
PIT_PIT [208]

Answer:

75 ml

Explanation:

I did it on a Solution Calculator online.

Heres the link to the calculator to do it yourself if you want:

- https://www.sigmaaldrich.com/chemistry/stockroom-reagents/learning-center/technical-library/solution-dilution-calculator.html

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3 years ago
Read 2 more answers
Ludwig Boltzmann developed a model that relates entropy to _________.
kifflom [539]

Answer:

the number of possible configurations of the locations and energies of the atoms or molecules that comprise a system

Explanation:

Ludwig Boltzmann was the first to suggest that the concept of entropy could be calculated by examining the positions and energies of molecules. This was developed into an equation, known as the Boltzmann equation, which relates entropy to the number of microstates (W):

S = k ln W

where k is the Boltzmann constant (1.38 x 10-23 J/K), and W is the number of microstates.

Microstates was used to imply the number of different possible arrangements of molecular position and kinetic energy at a particular thermodynamic state. Therefore any process that gives an increase in the number of microstates therefore increases the entropy. Hence the answer.

5 0
4 years ago
How can environmental pollution occur when using cosmetics that contain environmental pollution?
Eduardwww [97]

Answer:

When cosmetics companies use chemicals to make their products, they could dump their waste into rivers and oceans, causing water pollution to occur. The wildlife that lives in these habitats will probably die from them, causing some species to die out and become extinct.

Explanation:

Also, greenhouse gases could be released into the atmosphere, which would cause global warming.

6 0
3 years ago
Explain why vigorous exercise causes the heart rate to increase and you to also breathe faster.
patriot [66]

Answer:

When you are exercising, your muscles need extra oxygen—some three times as much as resting muscles. This need means that your heart starts pumping faster, which makes for a quicker pulse. Meanwhile, your lungs are also taking in more air, hence the harder breathing.

Explanation:

3 0
3 years ago
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