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Zinaida [17]
3 years ago
8

Why is combustion of fuel necessary for heat engines to do work?

Chemistry
2 answers:
azamat3 years ago
6 0

Because during combustion reaction, heat energy is released and it's this energy that is converted to work

sweet-ann [11.9K]3 years ago
5 0

Answer:

The energy from fuel can only be used when it is in the form of thermal energy. The energy stored in the chemical bonds of fuel are converted to thermal energy when the fuel is burned.

Explanation:

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In order to design an experiment, you need a ____ about the scientific question you are trying to answer. A. decision B. procedu
kolbaska11 [484]

The correct answer is option C, that is, hypothesis.  

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The fundamental concept of a hypothesis is that there is no pre-determined result. For a hypothesis to be considered as scientific hypothesis, it has to be something, which can be refuted or supported via carefully crafted observation or experimentation.  


4 0
3 years ago
How is the process of mitosis essential to the survival of an organism?
ELEN [110]

Answer:

Explanation:

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3 0
2 years ago
Why does sublimation feel cold?
Gala2k [10]
Cause it felt like being cold
7 0
3 years ago
Identify the substances that will appear in the equilibrium constant expression for the equation: 2Ag+(aq)+Zn(s)<->Zn2+(aq
Simora [160]

Hey there!


We Know that:



 2 Ag⁺(aq) + Zn(s) <-> Zn²⁺(aq)+2 Ag(s)


The equilibrium expression for the reaction is:



Kc =  [ Zn⁺² ]  /  [Ag⁺ ]²


Hope that helps!

8 0
3 years ago
Read 2 more answers
A sample of hydrogen occupies a volume of 351 mL at a temperature of 20 degrees Celsius. What is the new volume if the temperatu
xeze [42]
Volume of Hydrogen V1 = 351mL 
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6 0
3 years ago
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