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Interpretation:
The atmospheric gas which is present in highest concentration in dry air should be determined from the given gases.
Concept introduction:
Earth’s Atmosphere: It is the layer of gases that surrounds the planet earth and is retained by Earth’s gravity.
Dry air is air that has low relative humidity and no water vapor.
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Answer to Problem 1PS
The gas present in highest concentration in dry air is Option (b)
Explanation of Solution
Reason for the correct answer:
In atmosphere there are different types of air in different concentration are present.
Concentration of air may be changed in accordance with the temperature variation in the air. In dry air methane
Reason for the incorrect options:
In dry air methane has the highest concentration therefore the other given options such as,
(a)
(c)
(d)
are incorrect.
The gas present in highest concentration in dry air is methane.
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Chapter 20 Solutions
Chemistry & Chemical Reactivity
- When calcium carbonate is heated strongly, it evolves carbon dioxide gas. CaCO3(s)CaO(s)+CO2(g) 25 g of CaCO3 is heated, what mass of CO2would be produced? What volume would this quantity of CO2 (CU at STP?arrow_forwardThe reaction of pentane, C5H12, with oxygen, O2, gives carbon dioxide and water. (a) Write a balanced equation for this reaction.arrow_forward(ii) An industrial burner uses ethene as its fuel. The stoichiometric combustion equation of ethene is given by C2H4+3O2 → 2CO2 + 2H2O (a) If eight tonnes of ethene is burnt at one instance, how many tonnes of carbon dioxide is produced? (Hint: the atomic masses are C:12, Н:1, О:16) (b) If insufficient oxygen is supplied to the ethene burner and only carbon monoxide is produced instead of carbon dioxide. Derive the combustion equation (c) The ethene burner supplies a total annual household heat requirement of 3000 kWh per year. Calculate the required ethene supply in kilograms, assuming that it produces 0.28 kg CO2/ kWharrow_forward
- give the balanced equation for the combustion of liquid hexane (C6H14) in the presence of oxygen gasarrow_forwardA 500 megawatt electrical power plant typically burned 1,430,000 tonne of coal in a year. (a) Assuming that the coal was 80% carbon and 3% sulfur and that combustion was complete, calculate the number of tonne of carbon dioxide and sulfur dioxide produced by the plant during the year. (b) If 50% of the SO2 could be removed by reac- tion with powdered CaO to form CaSO3, how many tonne of CaSO3 would be produced?arrow_forwardHydrazine 1N2H42 and dinitrogen tetroxide 1N2O42 form a self-igniting mixture that has been used as a rocket propellant. The reaction products are N2 and H2O. (a) Write a balanced chemical equation for this reaction.arrow_forward
- Which of the following laws explains the following statement? Acetylene gas, regardless of its method of preparation, always has the same carbon to hydrogen ratio.arrow_forward(b) Reaction between carbon monoxide and hydrogen produced methanol as the only product. (i) Write a balanced equation for this reaction. (ii) Calculate the percentage yield of the reaction if 500.0 g of carbon monoxide reacts with excess hydrogen and 485.0 g of methanol are produced.arrow_forwardWhat is the ratio of mass of oxygen in H2O and H2O2?arrow_forward
- Hematite, Fe₂O3, is an important ore of iron. (An ore is a natural substance from which the metal can be profitably obtained.) The free metal is obtained by reacting hematite with carbon monoxide, CO, in a blast furnace. Carbon monoxide is formed in the furnace by partial combustion of carbon. The reaction is Fe₂O3(s) + 3CO(g) → 2Fe(s) + 3CO₂(g) How many grams of iron can be produced from 1.34 kg Fe₂03? g Fearrow_forwardIf the furnace initially contained 22.122.1 kg of solid calcium oxide and 10.110.1 kg P4O10(l)P4O10(l), how many kilograms of calcium phosphate were produced during the purification of the iron?arrow_forwardYou are told by your instructor to go to the stock room and find a bottle of the chemical K3Cl. Does such a compund exist?arrow_forward
- Introductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
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