A reaction generates hydrogen gas, H2, as a product. The reactants are mixed and sealed in a 250-mL vessel. After 20.0 minutes, 3.91x10-2 mol H2 have been generated.       Calculate the final concentration (in M) of H2 gas.

Q: A chemist adds 130.0 mL of a 9.85M silver perchlorate (AgClo,) solution to a reaction flask.…

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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: Calculate the concentration of KIO3(aq) present at the beginning of a reaction when 4.00 mL of 0.020…

A: Molarity of KIO3 = 0.020 M Volume of KIO3 = 4 mL

Q: A sample of 7.90 g of Mg(OH)2 is added to 25.6 mL of 0.225 M HNO3. a.) Write the chemical equation…

A: (a) When magnesium hydroxide added with nitric acid, Following balanced Chemical Reaction occurs -…

Q: One way in which the useful metal copper is produced is by dissolving the mineral azurite, which…

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Q: A chemist places 2.6428 g of NaCl in a 100 mL volumetric flask and adds water to the mark and calls…

A: The solution is given below -

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: What is the limiting reactant? calcium hydroxide hydrochloric acid How many grams of salt are formed…

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Q: A chemist places 2.9764 g of NaCl in a 100 mL volumetric flask and adds water to the mark and calls…

A: Given, Stock Solution 1 : mass of NaCl = 2.9764 g volume of flask = 100 mL Solution 2 : Volume…

Q: A sample of 7.89 g of Mg(OH)2 is added to 24.6 mL of 0.190 M HNO3. How many moles of HNO3 are…

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Q: In a neutralization reaction, 50.00 mL of 0.8500 M phosphoric acid reacts with 2.500 g of magnesium…

A: The answers to the first three questions can be given as - Given Data -

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: One way in which the useful metal copper is produced is by dissolving the mineral azurite, which…

A: Using the mass of Copper that is formed as precipitate, mass of Copper sulphate will be calculated…

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

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

A: Nitrogen reacts with hydrogen to form ammonia. The equation for the balanced chemical reaction is…

Q: e molar concentration

A: solution:

Q: 35.0 g of BaCl2 is added to 1.0 L of 0.55 M of AgNO3. The following reaction occurs:…

A: The reaction taking place is given as, => 2 AgNO3 (aq) + BaCl2 (aq) ---------> 2 AgCl (s) +…

Q: 5. Calculate the mass of oxygen required to react with 1.0 g of butane C4H10. _C4H10(g) +______O2(g)…

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Q: When 18.2 hg of water is used in a reaction, how many molecules were reacted? (Assume that the…

A: Here we have told that 18.2 hg of water is used in a reaction. Then we have to tell that how many…

Q: Here is a graph of the molarity of ethanol (C,H¸OH) in a reaction vessel during a certain chemical…

A: The concentration v/s time curve of ethanol is given as,

Q: Suppose a 250. mL flask is filled with 0.40 mol of CO, 1.6 mol of CO₂ and 0.20 mol of H₂. This…

A: The ICE table gives the initial concentration of compounds, change in concentration of compounds,…

Q: 45.0 g of BaCl2 is added to 1.0 L of 0.65 M of AgNO3. The following reaction occurs:…

A: The reaction taking place is given as, => 2 AgNO3 (aq) + BaCl2 (aq) ---------> 2 AgCl (s) +…

Q: Given the acid base reaction between hydroxide and acetic acid OH(-) + CH3COOH → H2O + CH3COO(-) We…

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Q: Carbonate rocks, such as limestone (primarily CaCO3(s)), are often identified by adding a few  drops…

A: Temperature = 298 K  Pressure = 1 atm  Volume collected = 78 ml = 0.078 L

Q: 2.135 g of potassium chloride in enough water to make 100.00 mL solution. Th student then pipettes…

A: Molarity = number of moles of solute / volume of solution (in L)  M1V1=M2V2 M1= initial Molar…

Q: Sulfuric acid dissolves aluminum metal according to the following reaction: 2Al(s)+3H…

A: The reaction is written below. 2Al(s) + 3H 2SO4(aq)→Al2(SO4)3(aq)+3H2(g) 2 moles of Al reacts to…

Q: A chemist places 2.2352 g of NaCl in a 100 mL volumetric flask and adds water to the mark and calls…

A: Weight of NaCl is 2.2352 gm Molar mass of NaCl is 58.5 gm/mole

Q: Consider the following chemical reaction: BaCl2(aq) + Na2SO4(aq) -----------> 2NaCl(aq) + BaSO4(s)…

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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

Q: One way in which the useful metal copper is produced is by dissolving the mineral azurite, which…

A:

Q: The solubility of aluminum sulfate (Al2(SO4)3) in water is 34.22 g per 100.0 mL of solution at a…

A:

Q: Pennies that are currently being minted are composed of zinc coated with copper. A student…

A: The balanced reaction taking place is  Zn (s) + 2 HCl (aq) --------> H2 (g) + ZnCl2 (aq)  Given :…

Q: Aqueous solutions barium chloride and potassium sulfate are combined.  1) Predict the products and…

A: Since you have asked a question with  multiple sub-parts, we will solve  first three sub-parts for…

Q: If you use 5.6 g of Al (s) and excess sodium hydroxide, how many liters of H2 (g) at 742 mm Hg and…

A: We can determine the number of moles of H2 that is produced, from the given balanced equation.Then…

Q: When 90.00 mL of 0.200 M MnO4–(aq) was reacted with 200.00 mL of 0.280M H2O2(aq), the amount of…

A: Percent yield is defined as the ratio of actual yield by theoretical yield multiplied by 100. Actual…

Q: Lead ions can be precipitated from solution with KCl according to the following reaction:…

A: Given information:Mass of KCl = 28.6 gMass of lead ions (Pb2+) = 25.5 gMass of PbCl2 = 29.0 g

Q: Is H₂O2 being created or destroyed by the chemical reaction? If H₂O₂ is being created or destroyed,…

A: Given that, a graph of the molarity of H2O2 in a reaction vessel during a certain chemical reaction…

Q: materials scientist has created an alloy containing aluminum, copper, and zinc, and wants to…

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Q: Consider the following chemical reactions: KClO3 (s) ----------> KCl(s) + O2(g)  NaNO3(s)…

A: Given the total mass of the mixture = 5.0000 g Mass of residue (KCl+NaNO2) formed = 3.8600 g. The…

Q: You need to make a 0.64 L solution of Mg(NO3)2 that has a nitrate concentration of 0.829 M. What…

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Q: A chemist prepares a solution of zinc oxalate ZnC2O4 by measuring out 0.00201μmol of zinc oxalate…

A: Given : Moles of Zinc oxalate i.e ZnC2O4 = 0.00201 μmol And volume of solution = 300 mL

Q: A total of 10.0 g of potassium permanganate, an ionic compound with chemical formula KMnO4, is…

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".