You are asked to design an air bag for a car. You know that the bag should be filled with gas with a pressure higher than atmospheric pressure, say 838 mm Hg, at a temperature of 22.0 °C. The bag has a volume of 41.5 L. What quantity of sodium azide, NaN3, should be used to generate the required quantity of gas? The gas-producing reaction is 2 NaN3(s) → 2 Na(s) + 3 N2(g) ____ g

Q: How many moles of Ca(OH) 2 are required to completely react with 300.0 L HCl solution? (HCl content…

A: Given that:  Volume of HCl solution = 300 L = 300000 ml and density = 1.2 g/ml So mass of solution =…

Q: O3(g) + 2 I-(aq) + H2O(l) → O2(g) + I2(aq) + 2 OH-(aq) How many grams of ozone can be removed from…

A: As per the given balanced chemical equation, 1 mol of ozone is removed using 2 mol of iodide ions.

Q: The reaction of copper metal with concentrated (16.0M) nitric acid produces, among other things, a…

A: A numerical problem based on mole concept that is to be accomplished.

Q: The atmosphere contains 78% N2(g), 21% O2(g), and traces of other gases. These gases react at high…

A: The objective of the question is to determine the equilibrium concentration of .It is given that,The…

Q: parts per million

A:

Q: How much copper sulfate and water must be weighed in order to make 23.14 L of 13.5 M copper sulfate?

A: Given: Molarity of the solution = 13.5 M The volume of the solution = 23.14 L  Standard data: The…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A:

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A: Limiting reagent Limiting reagent is the reactant which is completely consumed during the reaction…

Q: .A student takes 20 mL of 3M HNO3 solution and dilutes it to 250 mL i a volumetric flask. What is…

A: Molarity = number of moles / Litre

Q: Sodium metal reacts with water in the following single-displacement reaction: 2Na(s) + 2H2O(l) →…

A: Here we have to determine the limiting reactant and mass of H2 gas produced when 2.0 g of Na is…

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A: CdCl2 (aq) + 2AgNO3 (aq) ---------> 2AgCl (s) + Cd(NO3)2 (aq) Mass of AgCl = 4.1 mg = 0.0041 g…

Q: Hydrogen peroxide decomposes as shown below: 2H2O2 → 2H2O + O2 (34.0 g/mol) If a 6.287 g sample of…

A: The mass of a sample of hydrogen peroxide solution is 6.287 g.The moles of oxygen gas produced is…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: According to ideal gas equation PV =nRT where P = pressure V= volume n = number of moles R = gas…

Q: Convert the following measurement.

A: Convert kilogram into gram.

Q: Nitrogen and hydrogen combine at a high temperature, in the presence of a catalyst, to produce…

A:

Q: In 2001, about 54. million tons of sulfuric acid was produced in the United States. Calculate the…

A: to provide what is best and to better understand the student's concern for their studies.

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: Welcome to bartleby !

Q: The balanced equation for the combustion of butane, CAH10, is shown below. For your convenience, the…

A:

Q: The chemical reaction shown below is carried out in two flasks with balloons attached to the top to…

A: According to the given chemical equation, 1 mole of Mg requires 2 moles of HCl to react completely.…

Q: 0.250 g of magnesium reacted with 2.00 M HCl to yield 355 mL of gas collected over water at 20°C.…

A: The net ionic equation is written after eliminating the spectator ions form complete ionic equation:…

Q: A mixture of gases has the following composition by weight: 8.2 % O2, 12.5 % SO2 and 79.3 % N2.…

A:

Q: Potassium perchlorate is used in the production of fireworks and explosives. It is made in a…

A: The number of moles of a substance is calculated by using the formula moles = mass / molar mass

Q: Titanium occurs in the magnetic mineral ilmenite (FeTiO3), which is often found mixed up with sand.…

A:

Q: and assuming concrete is 100% by volume CaO, how much CO2 was released producing the concrete used…

A:

Q: Ammonia (NH) is an important compound since it is used in large amounts for the manufacture of…

A: Given 1.2 mol of Nitrogen and Hydrogen gas  30% of ammonia is reacted  We have to find moles of…

Q: Although we tend to make less use of mercury these days because of the environmental problems…

A: 4 HgS(s) + 4 CaO(s) → 4 Hg(l) + 3 CaS(s) + CaSO4(s) mass of HgS = 10.7 kg

Q: 1. KO2 -readily reacts with moisture to produce oxygen gas, potassium hydroxide, and hydrogen…

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Q: A chemist prepares a solution of magnesium bromide (MgBr₂) by measuring out 45. mg of MgBr₂ into a…

A:

Q: Consider the reaction 2 NO(g) + 5 H2(g) → 2 NH3(g) + 2 H20(g) The reaction mixture initially…

A: According to stoichiometry 2 mole of NO react with 5 mole of H2 So 10 mole of H2 will react with =10…

Q: How many grams of hydrogen are needed to produce 1.12 g of water according to this equation? 2 H2 +…

A:

Q: The balanced equation below shows a simple way of manufacturing hydrogen gas in lab (you've done…

A:

Q: The same idea can be applied to chemical reactions. Not all reactions go directly from reactants to…

A: Given CO(g) + H₂(g) → C(s) + H₂O(g)  C(s) + 2H₂(g) →CH4(g) Note : while solving i have taken…

Q: The airbags that protect people in car crashes are inflated by the extremely rapid decomposition of…

A: 1. Balanced chemical equation Given;

Q: The hydrate is not fully converted to the anhydrous form, which could be a source of mistake.…

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Q: For each of the following balanced chemical reactions, identify the type of chemical reaction. If…

A: A chemical reaction is the one in which a new substance gets formed from the given substances.

Q: You need to prepare 0.600 L of a solution of magnesium nitrate. The required molar concentration…

A: Given :  Volume of magnesium nitrate solution = 0.600 L  Concentration of magnesium nitrate = 0.156…

Q: The balanced equation below shows a simple way of manufacturing hydrogen gas in lab (you've done…

A: We according the STP condition , 1 mole of gas occupies 22.4 L of volume .   1 mole = 22.4 L  From…

Q: Catalytic converters are the most common option for controlling emissions of polluting gases by…

A: The order of the reaction with respect to each reactant can be determined by comparing the rates of…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A:

Q: An "ideal" fuel'air mixture in which both the fuel and the oxygen in the air are completely consumed…

A:

Q: A gas is formed in the reaction shown below. The gas laws can help determine the volume of gas…

A: Given, the hydrogen gas is formed from the given reaction as…

Q: Complete and balance each of the following equations for gas-evolution reactions.…

A: HNO3 reacts with Na2SO3 to give NaNO3, SO2 and H2O.

Q: The balanced equation for the combustion of butane, CAH10, is shown below. For your convenience, the…

A: Balanced chemical equation:  2 Al (s)+ 6 HCl (aq) →2 AlCl3 (aq) + 3 H2 (g)   It can be rewritten as,…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: The given reaction :  MnO2 (s) + 4 HCl (aq) ==> MnCl2 (aq) + 2H2O (l) + Cl2(g)  Volume of…

Q: What mass in grams of NaNs is required to produce 50.2 Lof N2 gas (density = 1.25 g/L ) according to…

A: Given that  50.2 L of N2 and density is 1.25g)l

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.