Download App

Thermodynamics — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryThermodynamics1 Mark
Question
When 430J of work was done on a system, it lost 120J of energy as heat. Calculate the value of internal energy change $(\Delta\text{U})$ for this process.
✓

Answer

$\Delta\text{U}=\text{q}+\text{w}$ $\text{q}=-120\text{J}$$\Delta\text{U}=-120+430$ $\text{w}=+430\text{J}$
$\Delta\text{U}=310\text{J}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "1 Marks Question" from Thermodynamics→Thermodynamics — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

The fact that enthalpy is a state function forms the basis of a very useful law. Name the law.
→
Why is 4s-orbital filled before 3d-orbital?
→
What will be the conjugate bases for the Brönsted acids: $\mathrm{HF}, \mathrm{H}_2 \mathrm{SO}_4$ and $\text{HCO}_3^-$?
→
In the equation, $\text{N}_2(\text{g})+3\text{H}_2(\text{g})\rightleftharpoons2\text{NH}_3(\text{g})$ would be the sign of work done?
→
Discuss the shape of the following molecules using the VSEPR model:PH ${ }_3$
→
What is the total number of sigma and pi bonds in the following molecules?
$\text{C}_2 \text{H}_4$
→
What is covalency of Al in $\left[\mathrm{AlCl}_4\right]^{-}$?
→
Write one chemical reaction for the preparation of $\mathrm{D}_2 \mathrm{O}_2$.
→
Justify that the following reactions are redox reactions:
$\mathrm{Fe}_2 \mathrm{O}_{3(\mathrm{~s})}+3 \mathrm{CO}_{(\mathrm{g})} \rightarrow 2 \mathrm{Fe}_{(\mathrm{s})}+3 \mathrm{CO}_{2(\mathrm{~g})}$
→
Lithium is the only alkali metal that forms nitride directly on reaction with air. Explain.
→