You reduce a 0.9355g solid platinum (IV) oxide with 0.0879g hydrogen gas to yield elemental platinum metal and water vapor in 45% yield. What mass of platinum metal was obtained?

Q: What mass of ammonium perchlorate should be mixed with 120 grams of aluminium powder to completely…

A: According to law of conservation of the mass which suggest that mass neither be created nor be…

Q: 3. What mass of bromine gas is required to react with 2.80 moles of aluminum? 3 mole Br, 2.80 moles…

A: The amount of product formed in any reaction depends upon the stoichiometric coefficients of the…

Q: A sample of ultrapure silicon was reacted with excess oxidizing yielding SiO₂. After proper…

A: Given that -  Mass of Silicon dioxide SiO2 =  3.1754 g  Percentage of ultrapure silicon = 99.98%…

Q: The amount of calcium carbonate with MM:100.1 g/mol in the ore dolomite can be determined by…

A: Hello. Since the question contains more than three sub-parts, the first three subparts shall be only…

Q: b. What volume of 2MNAOH will react with 34.0 g of FeCl3?

A: b) mass of FeCl3 = 34.0 g molar mass of FeCl3 = 162.2 g mol-1

Q: Excess sodium phosphate is mixed with 702.7 mL of strontium chloride at a concentration of 0.740…

A: Given data: The volume of strontium chloride = 702.7 mL = 0.7027 L. The concentration of strontium…

Q: A sample of 109.4g of calcium oxide was obtained by heating 291.9g of calcium carbonate. What is the…

A: The given balanced chemical reaction is as follows,

Q: A piece of aluminum foil 1.00cm^2 and 0.550-mm thick is allowed to react with bromine to form…

A: Given: The thickness of Al foil=0.550 mm 1 cm =10 mm 0.550 mm ×1 cm10 mm =0.055 cm Volume =1.00 cm2…

Q: The oxidation of trichloroethane results in the following reaction equation: 4 CaH,C|a() + 11 0, (g)…

A:

Q: A 0.2121-g sample of an organic compound was burned in a stream of oxygen, and the CO2 produced was…

A: Given - Sample of an organic compound,       (CxHy) = 0.2121 gram   Barium carbonate, ( BaCO3) =…

Q: Suppose that 4.1 mol NO2 and 0.80 mol H2O combine and react completely. Which reactant is in excess?…

A: Solution stoichiometry involves the calculation of concentration of solutions in the given…

Q: Calculate the volume (in L) of Carbon dioxide that will be formed if 25.0 grams of potassium oxalate…

A: Balanced chemical equation: 2KMnO4  +  5K2(COO)2  +  8H2SO4  ----->  2MnSO4  + 6K2SO4  + 10CO2 +…

Q: A 12.3 g sample of an alloy of Mg and Al produces 1.66 mol of H2 when added to excess HCl. What…

A: Given: Total mass of alloy = 12.3 g. And moles of H2 produced = 1.66 mol. Assuming that there are…

Q: A 0.8102-g sample of impure Al2(CO3)3 decomposed with HCl; the liberated CO2 was collected on…

A: The reaction is: Also, 1 mole CO2 = 44 g 1 mole Al2(CO3)3 = 234 g In 1 mole of Al2(CO3)3 contains…

Q: How many grams of O2 can be prepared from the thermal decompositionof 4.27 kg of HgO? Name and…

A: The process breaking up of a larger molecule into two or more small molecules when the energy is…

Q: Excess aluminum nitrate is mixed with 789.6 mL of sodium sulfate at a concentration of 0.679 mol/L.…

A: given balanced reaction, 2Al(NO3)3 + 3Na2SO4 → Al2(SO4)3 + 6NaNO3 volume of sodium sulfate, V =…

Q: When octane is combusted with inadequate oxygen, carbon monoxide may form. If 100 g of octane is…

A: Given: Mass of octane = 100 g. And mass of oxygen = 200 g.

Q: If 7 moles of hydrogen gas are mixed with 5 moles of bromine gas, how many moles of each species…

A: We can consider the balanced equation to solve the problem.  The balanced equation is : H2 + Br 2…

Q: How many grams of chlorine gas can be produced from the decomposition of 73.4 g. of AuCl3 by this…

A: The formula used for calculating the number of moles is as- no. of moles (n)= massmolecular weight…

Q: If 1.65g are obtained from allowing 0.93g of Copper to react with excess Nitric acid, what is the %…

A: Balance equation :                         Cu + 2HNO3   ------>  Cu(NO3)2  + H2  By mass-mass…

Q: The test tube containing some amount of MnO2 and the mixture of KCIO3-KCl is weighed as 7.200 g.…

A:

Q: A 249.3-g sample of ground water is analyzed for calcium. The Ca2+ in the sample is first…

A: Given the mass of groundwater sample taken for analysis = 249.3 g  mass of Ca2P2O7 precipitate…

Q: How many grams of O₂ can be prepared from the thermal de-composition of 4.27 kg of HgO? Name and…

A: Given: Mass of HgO decomposed = 4.27 kg

Q: What mass of ammonium phosphate is produced by the reactionog 5.8 g of ammonia?

A:

Q: What volume of 0.08892 M HNO3 is required to react completely with 0.2352 g of potassium hydrogen…

A: Molarity: Molarity is defined as number of moles solute present per litre of solution. M = nV…

Q: The reaction between aluminum carbide and water produces aluminum hydroxide and methane: Al4C3 (s) +…

A:

Q: 3.50L of chlorine gas at SATP conditions is reacted with a 1.05L sample of 0.150mol/L potassium…

A: At SATP: T = 298.15 K = 25oC P = 101.325 kPa= 1 atm

Q: How many grams of chlorine can be produced from reacting 7.49 g of titanium (IV) chloride with…

A: The reactants given are 1) titanium (IV) chloride i.e TiCl4 (Molar mass = 189.7 g/mol) 2) oxygen i.e…

Q: The thermite reaction is performed using 8.6 g Fe 2O 3 and 1.8 g powdered Al metal. Which reactant…

A:

Q: How many grams of Zn can be produced by heating 81g Al with zinc chloride?

A: Aluminium reacts with zinc chloride to form zinc metal and aluminium chloride. The equation for the…

Q: 65: Lead ions can be precipitated from solution with NaCl according to the reaction: Pb2 (aq) +…

A:

Q: mass in grams of NO

A:

Q: How many O2 molecules are needed to react with 4.58g of S?

A: Number of molecules can be calculated by using following formula Number of molecules = moles ×…

Q: What is the mass percentage of C in CH₃CH₂OH? Provide an answer to two decimal places.

A:

Q: What mass in grams of NaN3 is required to produce 50.2 L of N2 gas (density = %3D 1.25 g/L)…

A: Given, Volume of N2 = 50.2L Density of N2 = 1.25g/L

Q: Determine the theoretical yield for the reaction. 2Mg(s)+O2(g)→2MgO(s) When 10.1 g Mg is allowed to…

A:

Q: What volume of 1.50 M NaCl (molar mass = 58.44 g/mol) is needed for a reaction that requires 146.3 g…

A:

Q: Phenacetin can be prepared from p-acetamidophenol, which has a molar mass of 151.16 g/mol, and…

A: To calculate the amount of product formed in a reaction we need to consider the stoichiometry of the…

Q: A chemist adds 3g of zinc to a solution containing an excess of silver nitrate  Only 7.2g of silver…

A: Given information: Mass of zinc = 3 g Actual yield of silver metal = 7.2 g

Q: How many moles of HNO₃ will be produced from the reaction of 88.5 g of NO₂ with excess water in the…

A: Balanced chemical equation: 3 NO₂(g) + H₂O (l) → 2 HNO₃(g) + NO(g) Number of moles of HNO3 =…

Q: How many moles of electrons are required to produce 18.1 g of potassium metal from a sample of…

A: We are hereby asked that how many moles of electrons are required to produce 18.1 g of potassium…

Q: This

A: According to the question, a 235.2 g sample of ground water is analyzed for calcium. The Ca2+ in the…

Q: Metallic titanium and its alloys (especially those with aluminum and vanadium) combine the…

A:

Q: what is the mass of dry precipitate actually collected?

A: Molarity is the number of moles of solute in 1Litre of the solution.

Q: Calculate the percent yield of Cl2 (g) in the electrolytic decomposition of hydrogen chloride (HCl)…

A: The percentage yield can be calculated with the help of theoretical and experimental yield.

Q: Calculate the theoretical yield in moles NH3 from the complete reaction of 15.6 grams H2 in the…

A: The chemical reaction occurs according to the stoichiometry of the reaction. The reagent which is…

Q: How many grams of ammonia (NH3) will be produce if 289 g of nitrogen are used?

A: Given :- mass of N2 = 289 g  To calculate :- mass of NH3 (in g)

Q: A 0.1799g sample of an organic compound was burned in a stream of oxygen, and the CO2 produced was…

A: The balanced equation for the above process is : CO2 + Ba(OH)2------------->BaCO3 +H2O The amount…