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worty [1.4K]
3 years ago
12

Which is the most likely way a chemist would be involved in the engineering

Chemistry
1 answer:
AlexFokin [52]3 years ago
8 0
Option A is the most likely
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In a heat engine, if 500 J of heat enters the system, and the piston does 300 J of work, what is the final internal (thermal) en
jasenka [17]

Answer: The final energy is 1,700 J

Explanation: According to first law of thermodynamics:

\Delta U=q+w

\Delta U=U_2-U_1=Final energy-initial energy=Change in internal energy

q = heat absorbed or released

w = work done by or on the system

w = work done by the system=-P\Delta V  {Work done by the system is negative as the final volume is greater than initial volume}

q = +500J   {Heat absorbed by the system is positive}

w = work done by the system = -300J

U_2-1500J=+500J-300J

U_2=1700J

6 0
3 years ago
Read 2 more answers
A sample in lab displaces 15 mL of water in a graduated cylinder. When placed on a scale the mass is 8.7 g. What is the density
Natasha2012 [34]

Answer:

<h2>0.58 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

Density =  \frac{mass}{volume}

From the question

volume = 15 mL

mass of object = 8.7 g

We have

Density =  \frac{8.7}{15}

We have the final answer as

<h3>0.58 g/mL</h3>

Hope this helps you

4 0
3 years ago
How does distance between
Aleks04 [339]

Answer:

n chemistry, we talk about the attraction between protons (+) in the nucleus to the ... Because electrons are negatively charged, they are attracted to nuclei, which are ... Reasoning: There are the same number of energy levels/shells, but there are ... more distance between outer electrons resulting in a weaker attraction

Explanation:

8 0
4 years ago
True or False
lozanna [386]
1. False (gravity)
2. True
3. False
4.True
5. False

Hopefully this helps :)
5 0
3 years ago
How does solar energy compare to wind energy and fossil fuels?
Helga [31]
All of them are a source of getting energy but solar and wind energy are a more beneficial way of producing the energy we need.
6 0
3 years ago
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