Neco Model Questions Vol1 2024 Chemistry Question 25

Practice objective / multiple choice question 25 from the 2024 Neco Model Questions Vol1 Chemistry examination.

Neco Model Questions Vol1 2024 Chemistry Objective / Multiple Choice Medium Difficulty
Question 25 NECO_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • objective
Neco Model Questions Vol1 2024 Chemistry Question 25 diagram

An experiment uses an inverted graduated cylinder to collect hydrogen gas over water at \(25^{\circ}\text{C}\). The volume of gas collected is \(250\ \text{mL}\). The atmospheric pressure is \(760\ \text{mmHg}\) and the vapor pressure of water at this temperature is \(23.8\ \text{mmHg}\). Using the ideal gas law, calculate the number of moles of hydrogen gas collected.

Answer Options

Correct Answer A. 9.9×10⁻³ mol
B. 1.0×10⁻³ mol
C. 9.9×10⁻² mol
D. 1.1×10⁻³ mol
Correct Answer
A
Correct Option:
9.9×10⁻³ mol

About This Question

This is Neco Model Questions Vol1 2024 Chemistry Question 25. It is one of the objective questions from the 2024 Neco Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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