Automobile air bags inflate during a crash or sudden stop by the rapid generation of nitrogen gas from sodium azide. 2NaN3(s) →2Na(s) + 3N2(g) How many moles of sodium azide are needed to produce sufficient nitrogen to fill a 50.0 L air bag to a pressure of 1.25 atm at 25°C? Select one: a. 5.31 mol b. 1.70 mol c. 4.92 mol d. 2.56 mol e. 3.83 mol

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Q: When heated, solid potas 0₂ (8) unbalanced equation: KCIO3(s) → KCI) + f 20.8 g of potassium…

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Q: Reaction Stoichiometry Involving Gases 71. Consider the chemical reaction: C(s) + H2O(8) CO(g) +…

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Q: Hydrogen gas is generated by reacting lithium metal with excess HCI. How many grams of lithium metal…

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Q: A 6.00 L tank at 29.9 °C is filled with 6.33 g of sulfur tetrafluoride gas and 12.3 g of sulfur…

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Q: 4.- Fluorine gas initially at 12 L, .9 atm, and 35°C undergoes a change so that its final volume and…

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Q: A 9.00 L tank at 23.9 °C is filled with 6.76 g of boron trifluoride gas and 4.61 g of sulfur…

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Q: Determine the volume of O2 (at STP) formed when 50.0 g of KCIO3 decomposes according to the…

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Q: In preparation for a combustion demonstration, a professor fills a balloon with equal molar amounts…

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Q: A mixture of gases containing 2.00 g of CO2, 3.00 g of Ne, and 4.00 g of SO2 is confined in a 50.0 L…

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Q: iron ( s ) + chlorine ( g ) ---> iron(III) chloride ( s ) How many grams of iron are needed to…

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Q: In the reaction 2KClO3(s) --> 2KCl(s) + 3O2(g) If 22.4 L of oxygen at STP are needed, how many…

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Q: Calculate the mass of 4.55 L of HCl gas at STP.

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Q: Automobile air bags employ a chemical reaction involving the rapid decomposition of sodium azide…

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Q: 1. A gas system consists of 2.10 x 10-3 g of CO2, 3.88 x 103 mol of N2, and 5.25 x 1020 molecules of…

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Q: 11. In the presence of a catalyst, potassium chlorate decomposes and provides a very simple way to…

A: Given;

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Q: Part A) Fill out the following table   Part B)You have a 1.50 L weather balloon at 35.5 oC and…

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Q: When 25.0 g of potassium chlorate (KCIO3) decomposes, how many L of O2 gas are formed at STP? Refer…

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Q: The balanced equation for the decomposition of potassium chlorate is shown below. When carried out…

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.