A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.242 g of hydrogen gas. What is the percent zinc in the original mixture?

Q: The first step in the manufacture of nitric acid by the Ostwald process is the reaction of ammonia…

A: Limiting reagent is the reagent which is consumed in the chemical reaction completely. It decides…

Q: hen copper is heated with an excess of sulfur, copper(I) sulfide is formed. In a given experiment,…

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Q: Antimony is alloyed with lead to increase the rigidity of components used in the construction of…

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Q: Calculate the mass of H2 produced when 118.5 mL of 0.8775 M H3PO4 solution reacts according

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Q: How many grams of magnesium oxide can be produced by reacting 0.248 g magnesium that is 97.5% pure…

A: Given mass of Magnesium = 0.248g% purity of Magnesium = 97.5%No.of molecules of oxygen = 5.36 x…

Q: To determine the amount of platinum in an alloy, a 8.565 g8.565 g sample of an alloy containing…

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Q: For the following reaction, 10.8 grams of nitrogen monoxide are allowed to react with 8.95 grams of…

A: Reaction involved :2NO(g) + O2(g) -----> 2NO2(g)Moles of nitrogen monoxide (NO) = given mass/…

Q: A student carefully measures 1.069 g of an unknown brown copper chloride and dissolves it into…

A: Let the empirical formula of the copper chloride be CuClx. Copper chloride reacts with Zinc to form…

Q: iron + copper (II) sulfate →    iron (II) sulfate + copper When 443.56 grams of iron are reacted,…

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Q: Consider the reaction of solid P4 and chlorine gas to form gaseous phosphorus trichloride. a) Write…

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Q: For the following reaction, 25.8 grams of zinc oxide are allowed to react with 9.60 grams of water.…

A: The objective of this question is to determine the maximum mass of zinc hydroxide that can be…

Q: If a solution containing 107.7 g of mercury(II) chlorate is allowed to react completely with a…

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Q: For the following reaction, 17.1 grams of chlorine gas are allowed to react with 54.4 grams of…

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Q: The Ostwald process is used commercially to produce nitric acid, which is, in turn, used in many…

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Q: What amount in moles is 4.77x10^25 (to the power of 25) molecules?? 1.2.87x10^49 mol 2.79.2 mol…

A: Molecules = 4.77 x 1025

Q: For the following reaction, 8.78 grams of carbon (graphite) are allowed to react with 12.7 grams of…

A: Carbon reacts with oxygen to form carbon dioxide. The equation for the balanced chemical reaction is…

Q: A compound of copper was formed when 1.643 g of Cu was heated in oxygen. The mass of the compound…

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Q: The aluminum in a 0.767 g sample of an unknown material was precipitated as aluminum hydroxide,…

A: given: mass of sample of unknown material =0.767 g mass of aluminium oxide produced = 0.143 g…

Q: A 1.000 g sample of an unknown compound containing only carbon, hydrogen, and oxygen was analyzed…

A: Given: Mass of sample = 1.000 g Mass of CO2 formed = 2.579 g Mass of H₂O formed = 0.6536 g Molar…

Q: 1.71 g H2 is allowed to react with 9.66 g N2, producing 1.01 g NH3. What is the theoretical yield in…

A: Given - Mass of H2 = 1.71 g Mass of N2 = 9.66 g Mass of NH3 = 1.01g

Q: If 2.332 g of a sample containing a mixture of CuO and CuCO3 are heated, the final weight of the…

A: CuCO3 on heating decomposes to form CuO and CO2 CuCO3 (s) →heat CuO (s) + CO2 (g) 123.55 g…

Q: A 1.000 g sample of an unknown compound containing only carbon, hydrogen, and oxygen was analyzed…

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Q: If a 0.2503-g mixture of copper(Il) oxide and copper(Il) carbonate is heated, 0.1255 g of carbon…

A: Given: 0.2503 g mixture of copper(II) oxide and copper(II) carbonate is heated ,0.1255 g of carbon…

Q: A compound was found by elemental analysis to contain 39.96 % carbon, 13.42 % hydrogen, and 46.62 %…

A: Molecular formula is the formula of the molecule in which all the atoms are represented with number…

Q: A 2.984 g sample containing impure CuCl₂ 2 H₂O was heated to constant mass. The sample mass after…

A: Given, mass of impure CuCl2.2H2O = 2.984 g Mass sample after heating to drive off the water = 2.452…

Q: A 3.859 g sample containing impure CuCl2· 2 H20 was heated to constant mass. The sample mass after…

A: The impure sample of CuCl2.2H2O heating to drive off all the water then the mass of the mixture is…

Q: Suppose a student starts with 2.4319 g of a sand mixture and separates the components into 1.3012 g…

A: percent of SiO2 in the starting mixture =    =Mass of SiO2 × 100/ Total Mass of the mixture =…

Q: O A mixture consisting of only chromium(III) bromide (CrBr3) and aluminum bromide (AlBr3) weighs…

A: The objective is to calculate the mass percentage of CrBr3 and AlBr3.GivenThe mixture of CrBr3 and…

Q: Determine the mass of a solution of a 7.897 wt % LiI if you needed to provide 0.3894 moles of LiI…

A: wt% = 100 x Mass of solute/Mass of solution Mass = Number of moles x molar mass

Q: A student synthesizes tin oxide to create a compound with generic formula SnxOy. She does this by…

A: Given : mass of product = 39.10 g           Mass of oxygen= 30.80 g  Molar mass of oxygen= 15.999…

Q: Calculate the mass of each element in Rhenium Bromide (ReBr3) when 93.7 g of Bromine gas (Br2)…

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Q: 3H2(g)+N2(g)→2NH3(g) 1.78 g H2 is allowed to react with 9.71 g N2, producing 2.94 g NH3. What is the…

A: The objective of this question is to calculate the theoretical yield of NH3 in grams for the given…

Q: If 5.3 g of hydrogen gas is reacted with 12.6 g of oxygen gas to produce water, the hydrogen is the…

A: Chemical reaction: 2 H2 + O2 ---> 2 H2O  Mass of H2 = 5.3 g Mass of O2 = 12.6 g Molar mass of H2…

Q: A sample of limestone and other soil materials was heated, and the limestone decomposed to give…

A: We know that Molar mass of CO2=44g/mol Mass of CO2=2.14g Moles of CO2=MassMolar mass…

Q: What mass of hydrochloric acid is required to fully react with 15.0 grams of zinc metal to produce…

A: Answer

Q: A student determined the mass of NaCl extracted during an experiment to be 0.42 grams. If the mass…

A: Given  Mass of NaCl = 0.42 g Mass of original mixture = 1.97 g

Q: percent yield?

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Q: For the following reaction 36.4 grams of sulfuric acid are allowed to react with 40.1 grams of zinc…

A: The question is based on the concept of Reaction Stoichiometry.   We have to identify the limiting…

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.