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Chapter 5 : States of Matter (3rd hour)

Authored by SITI NUR AYISSAH SANUDIN

Chemistry

11th - 12th Grade

Used 4+ times

Chapter 5 : States of Matter (3rd hour)
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3 questions

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1.

OPEN ENDED QUESTION

5 mins • Ungraded

A mixture of gases contains 0.1 mol of CO2 and 0.3 mol of O2. Calculate the partial pressures of the gases if the total pressure is 760 mmHg at a certain temperature.

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2.

OPEN ENDED QUESTION

5 mins • Ungraded

A sample of gas at 5.88 atm contains 1.2 g CH4, 0.4 g H2 and 0.1 g He. Calculate the partial pressure of CH4, H2 and He in the mixture.

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3.

OPEN ENDED QUESTION

15 mins • Ungraded

Consider the reaction: 2KClO3 → 2KCl + 3O2.

A sample of 5.45 L of oxygen is collected over water at a total pressure of 735.5 torr at 25°C. How many grams of oxygen have been collected? (at 25°C, the vapour pressure of water is 23.8 torr)

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