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Pressure in a glass is as a result of the collision of the gas molecules with the walls of the container, so when the volume of a fixed mass of gas is decreased through compression at constant temperature, molecules travel a shorter distance to collide with the wall of the container, leading to increased number of collision per unit time.
Edna Mandela olumo lina answered the question on July 24, 2020 at 09:54
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Date posted: June 5, 2020. Answers (1)
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State and explain the changes in mass that occur when the following substances are separately heated in open crucibles.
(ì) copper metal.
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Date posted: April 2, 2020. Answers (1)
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Date posted: November 14, 2019. Answers (1)
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Date posted: November 14, 2019. Answers (1)
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Date posted: November 14, 2019. Answers (1)
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Date posted: November 14, 2019. Answers (1)
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Date posted: November 14, 2019. Answers (1)
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Date posted: November 14, 2019. Answers (1)
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Date posted: November 14, 2019. Answers (1)
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Use the information in the table to answer the questions that follow.
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b.Calculate the mass of the crystals formed.
Date posted: November 14, 2019. Answers (1)
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Substance A and B reacted to form a gaseous product AB3 as shown in the following equation below.
The figure below shows how the percentage of gas AB3 in the equilibrium mixture changes with temperature.
(a) Explain how the percentage of AB3 gas changes as shown in the figure.
(b) On the axes below, sketch a graph showing how percentage of AB3 gas at equilibrium with the mixture changes with pressure.
Date posted: November 14, 2019. Answers (1)
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In an experiment, a mixture of 126.0 cm3 nitrogen and 120.0 cm3 hydrogen gases was heated in the presence of iron catalyst. Determine the composition of the resultant gaseous mixture.
Date posted: November 14, 2019. Answers (1)
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Date posted: November 14, 2019. Answers (1)
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Date posted: November 14, 2019. Answers (1)
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What mass of copper would be deposited from a solution of copper (II) chloride when a current of 3.0A is passed through the copper (II) chloride solution during electrolysis for 50 minutes? (Cu = 63.5, Faraday’s constant= 96,500 Coulombs)
Date posted: November 13, 2019. Answers (1)
- In a class experiment, 5.0g of ethanol were completely burnt and all the heat evolved was used to heat 500cm3 of water from 20o to...(Solved)
In a class experiment, 5.0g of ethanol were completely burnt and all the heat evolved was used to heat 500cm3 of water from 20o to 80oC. (Given that the specific heat capacity of water = 4.18Jg-1oC-1, density of water = 1.0gcm-3, C = 12, O = 16, H = 1.0)
i. Write a balanced equation to show the reaction that takes place when ethanol burns.
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I. Absorbed by the water
II. Given out when one mole of ethanol was burned completely.
Date posted: November 13, 2019. Answers (1)
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(a) Complete the following nuclear equation
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Date posted: November 7, 2019. Answers (1)
- Study the information in the following table and answer the questions that follow. The letters do not represent the actual chemical symbols of the elements.(Solved)
Study the information in the following table and answer the questions that follow. The letters do not represent the actual chemical symbols of the elements.
Which of the above elements are:
(i) Likely to be radioactive?
(ii) Able to form a compound with the highest ionic character?
Date posted: November 7, 2019. Answers (1)