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Andru [333]
4 years ago
6

one of the isotopes of sulfur is represented as sulfur -35 or S-35. what does the number 35 signify?

Chemistry
2 answers:
Temka [501]4 years ago
6 0
35 is equal to it's mass number
SpyIntel [72]4 years ago
4 0

Answer: If using plato the answer is D Mass number

Explanation:

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The first law of thermodynamics characterises the two types of energy transfer, as heat and as thermodynamic. The final internal (thermal) energy of the system is 1,500 J.

<h3>What is internal energy?</h3>

The energy present in a system itself for conducting reactions is called internal energy.

Given,

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According to the <u>first law of thermodynamics</u>:

\rm Q = \Delta U + W

Substituting values in the above equation:

\begin{aligned}\rm Q &= \rm U_{2} - U_{1} + W\\\\\rm U_{2}  &= \rm Q - W + U_{1}\\\\\rm U_{2}  &= 700 - 400 + 1200\\\\&= 1500 \;\rm J\end{aligned}

Therefore, option D. 1500 J is the final energy.

Learn more about internal energy here:

brainly.com/question/2602565

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I think it's A

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