In a closed system, Δ U = -42 J while 55 J of work is… | StemPy Lab

Help Contact For teachers and institutes

Mock Tests Classes

StemPy Lab

Learn. Solve. Code the solutions. Test yourself.

Live examsFree mock exams, timed and rankedEveryone starts together, and your score and rank come the moment it ends.See the exams →

Learn

Physics
Chemistry
Mathematics
Biology
Python Programming
Statistics & Data Science
Classes
Groups

Practice

Problems
Quizzes
Mock Tests
Prepare for an Exam
Question Sets
Exams
Certificates
Python Labs
AI Practice Generator
Student-Created Tests

Community

Discussions
Resources
Notes
Blog

Account

Dashboard
My Content
Profile
Log in

© 2026 senLearn. All rights reserved.Help About Contact Privacy Policy Terms of Use Refund Policy

In a closed system, Δ U = -42 J while 55 J of work is… | StemPy Lab

Quizzes
In a closed system, Δ U = -42 J while 55 J of work is done on it. What is q?

ChemistryMediumHigh School (11–12)Chemical Thermodynamics › Systems, Work, Heat and the First Law A-Level AP Board Exam IB

Created by StemPy Lab

In a closed system, $\Delta U = -42$ J while $55$ J of work is done on it. What is $q$ ?

← All Quizzes

← Burning fuel passes 1.25 kJ to the air in an engine, and that air then lifts a piston with 0.48 kJ of work. Find Δ U for the air.A paddle stirs a liquid in a perfectly insulated flask with 135 J of work. What is Δ U for the liquid? →

More onChemical Thermodynamics › Systems, Work, Heat and the First Law

Discussion (0)

Log in to join the discussion.

Loading…

More questions on this topic

One mole of an ideal gas at 300 K expands from 5.00 bar to 1.00 bar while its temperature is held…Advanced
One mole of liquid benzene boils at its boiling point, 353.2 K, under a constant pressure of 1…Hard
An ideal gas is taken once round the cycle A to B to C to A shown in the figure. From A (10 L, 2.0…Hard
One mole of an ideal monatomic gas (CV = 32 R) is at 400 K and 10.0 bar in a cylinder with…Hard
A rigid, insulated flask of volume 4.0 L holds 0.50 mol of an ideal gas at 300 K. It is joined by…Medium

All questions on this topic →

Problems on this topic

A cylinder holds 1.00 mol of an ideal gas at 8.00 bar, kept at 300 K by a large water bath…Advanced
A sample of 2.00 mol of an ideal gas at 300 K expands from 10.0 L to 40.0 L, while its temperature…Medium
1.00 mol of an ideal gas at 300 K expands at constant temperature from 10.0 bar to 2.00 bar…Hard
2.00 mol of an ideal gas at 310 K expands reversibly and at constant temperature from 5.00 L to…Medium

All problems on this topic →