2 years ago

1. Define anthracite.

Chemistry

2 answers:

AnnZ [28]2 years ago

7 0

Answer:

Antharacite refers to a hard coal of hard variety that contains relatively pure carbons ...

faltersainse [42]2 years ago

6 0

Answer:

a hard natural coal of high luster differing from bituminous coal in containing little volatile matter and in burning very cleanly is called anthracite . called also hard coal

Explanation:

Answer from Gauth math

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A sample of gas occupies a volume of 73.7 mL. As it expands, it does 133.7 J of work on its surroundings at a constant pressure

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Calculate the work (kJ) done during a reaction in which the internal volume expands from 20 L to 43 L against an outside pressur

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$\large \boxed{\text{-10.0 kJ}}$

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2. Convert litre-atmospheres to joules

$w = \text{-98.9 L\cdot$atm } \times \dfrac{\text{101.3 J}}{\text{1 L$\cdot$atm }} = \text{-10000 J} = \textbf{-10.0 kJ}\\\\\text{The work done is $\large \boxed{\textbf{-10.0 kJ}}$}$

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1. Define anthracite.​

1. Define anthracite.