Solid potassium and oxygen gas react to produce solid potassium peroxide, K2O2. Assume the reaction between 39.1 grams of potassium and 32.0 grams of oxygen proceeds to completion. What mass of potassium and what mass of oxygen remain after the reaction?

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A: For determining the amount of limiting reactant or excess reactant, the mole ratio of reactants in a…

Q: When 6.00 g of sulfur are combined with 6.00 g of oxygen, 12.00 g of sulfur dioxide (SO2) are…

A: Molecular mass of sulfur = 32 g /mol, means 32 g in 1 mol.Molecular mass of O2 = 32 g / mol, means…

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A: When a reaction occurs,  reaction occurs in stoichiometry amounts.  Product is formed with respect…

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A: The reaction taking place is  2 Hg + O2 -----> 2 HgO Hence from the above reaction we can say…

Q: The following diagram represents a chemical reaction in which the red spheres are oxygen atoms and…

A: a) In the left box, there are two type of molecules, one is oxygen (O2) and other is Nitrogen and…

Q: Calculate the mass, in grams, of each of the following: a. 2.4 mol of aluminum Mass %3D b. 1.60 x 10…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: An 8.925 g sample of a compound containing only carbon, hydrogen, and oxygen gives 9.258 g of carbon…

A: Given : Mass of compound = 8.925 g Mass of CO2 produced = 9.258 g And mass of H2O produced = 5.351 g…

Q: Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of…

A: Given,  Formula of hydrate copper(II) chloride = CuCl2.xH2O Mass of crucible = 16.221 gMass of…

Q: 19.78 mL of bromine contains 6.022 x 1023 bromine molecules. How many bromine atoms are in 3.00 L of…

A: Given -> Volume (V1) = 19.78 ml = 0.01978 L (1L = 1000 ml) Number of bromine molecules in V1=…

Q: 23. Ammonia is synthesized from hydrogen and nitrogen. N2 (g) + 3 H2(g) - -> 2 NH3 (g)lf 5.00 L of…

A: Given that: N2(g) + 3H2(g) ....> 2NH3(g)  Volume of N2(V) = 5.00L T = 298 K P = 3.00 atm

Q: Suppose you are given 2.50x 104 pg of aluminum sulfate, Al(SO4)ls (s) (density = 2.672 g/cm³) a. How…

A: a) In the first problem we need to find out the number of oxygen atoms present in the given sample.…

Q: What is the mass percentage of phosphorus in a sample of 8.53 phosphorus oxychloride containing a…

A: Mass percentage of phosphorus = 20.16 %

Q: Sodium metal and water react to form hydrogen and sodium hydroxide. If 11.96 g of sodium react with…

A: Alkali metals react with water vigorously to form metal hydroxide and hydrogen,General reaction,M(s)…

Q: In an experiment, 0.237 g of zinc metal reacts to produce 0.501 g of zinc oxide. Using the Law of…

A: Given, Mass of zinc metal = 0.237 g Mass of zinc oxide = 0.501 g

Q: The mass ratio of sodium to fluorine in sodium fluoride is 1.21:1. A sample of sodium fluoride…

A: After the decomposition of sodium fluoride, the mass of fluorine produced is calculated by using the…

Q: In a combustion reaction, 46.0 g of ethanol reacts with 96.0 g of oxygen to produce water and carbon…

A:

Q: À 7.45 g sample of calcium carbonate completely decomposes into calcium oxide (lime) and carbon…

A: Answer :-  1) only 3  i.e. The original solid is not an element.…

Q: 56.7 g of H,S reacts with 30.9 g of SO, according to this reaction + SO, 2H,S + So, = 35 + 2H,0 What…

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Q: (c) 54.5% C, 9.2% H, and 36.3% O by mass

A: given :-  percentage composition of C = 54.5%  percentage composition of H = 9.2%  percentage…

Q: 5 g of anhydrous strontium nitrate is added to a beaker and exposed to air. After several hours the…

A: Given that -  Mass of strontium nitrate =  5 g  Mass of water Increases due to exposed in air = 1.70…

Q: A copper road coated with copper (II) oxide has a mass of 38.72 g. The rod is heated and made to…

A: The number of moles for a given chemical species refers to the ratio of mass of the species to that…

Q: If the mass percentage of O in a sample is 68% and the total mass of the sample is 4.128 Kilograms-…

A:

Q: Is the volume of H2 produced larger than the volume of O2 producedbecause (a) hydrogen atoms are…

A: Given: The volume of H2 produced is larger than the volume of O2

Q: Phosphorus burns in air to produce a phosphorus oxide in the following reaction: 4P(s) + 50,(g) –→…

A:

Q: The mass of Cu (63.55 g/mol) used to create Cu2S was 16.95 grams. what theoretical mass of Cu2S…

A:

Q: 4) An evil scientist is attempting to split up uranium hexafluoride, UF6, into its componer…

A: Given: Compound= UF6Mass of uranium obtained = 70.5 gMass of fluorine obtained = 36.3 g The…

Q: Consider the following reaction N2 (g) + 3H2 (g) ? 2NH3 g If 1.10 x 10 g N2 is reacted with 500 x 10…

A: The given reaction is, N2 (g) + 3H2 (g) →2NH3 (g) Given that: mass of N2 = 1.10×103 g mass of H2 =…

Q: A 5.00 g mixture of potassium sulfide and potassium chloride contains 2.80 g potassium. What…

A: The mass percentage is calculated using the formula given below: Mass percentage =mass of potassium…

Q: what is the mass of silver, in grams, that can be theoretically produced?

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Q: What mass of CdS is produced if 8.47 g cadmium reacts with 2.51 g of sulfur?

A:

Q: A sample of gas mixture from a neon sign contains 3.48 x 10-4 mol Ne and 1.12 x 10- mol Kr. What are…

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Q: 10.6 g of anhydrous sodium carbonate combines with 18g of water to form hydrated sodium carbonate…

A:

Q: Determine the mass percentage of carbon, C, hydrogen, H, and oxygen, O, in C,H2O6. R

A: Given :-  Molecular formula of glucose = C6H12O6  To be determined :-  Mass percentage of C, H and O…

Q: sample of aluminum contains 2.91 × 1022 atoms of aluminum. What is the mass of this sample?  [Molar…

A: Given that: Molecules of Al = 2.91×1022 atoms  Molar mass of Al = 26.98 g/mol  1 mol = 6.023×1023…

Q: Lithium nitride reacts with water to produce ammonia and lithium hydroxide according to the equation…

A: Given,ND3 = 140 mg (or) 0.14 gMolar mass of ND3 = 20.042 g/molMolar mass of D2O = 20.027 g/mol

Q: 4. . Which is NOT TRUE about the Law of Conservation of mass? O The number of atoms before and after…

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Q: 45.5 grams of a magnesium reacts with 243.2 grams of oxygen gas. At the end of reaction, 211.2 grams…

A: using mole concept from Balanced chemical equation easily determination of moles of products is…

Q: Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of…

A:

Q: A mixture of 50.0 g of S and 1.00x10^2 g of Cl2 reacts completely to form S2Cl2 and SCl2. What mass…

A: When S react with Cl2, it will form S2Cl2 and SCl2 so first write reactant and product then balanced…

Q: A mixture of 197.1 g of P and 203.6 g of O, reacts completely to form P.0, and P,010. Find the…

A: Using mole  concept  easily determine how much reactant used and how much product is formed .

Q: What is the mass occupied by 2.3 X 10 6Smolecules of Oxygen gas?

A: Number of molecules of oxygen = 2.3×1065 molecules

Q: You wish to prepare 207 grams of 14.7 % Ca(NO3)2. You will need grams of calcium nitrate and mL of…

A: Given mass of solution = 207 gm

Q: Mass of crucible and cover   12.73g 2. Mass of crucible, cover, and sample   24.11g 3. Mass of…

A: Total mass lost by sample during heating = Mass of crucible, cover, and sample - Mass of crucible,…

Q: the mass of Cu (63.35 g/mol) used to create Cu2S was 41.95 grams. what theoretical mass of Cu2S…

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Q: Hydrogen cyanide, HCN, is prepared from ammonia, air, and natural gas (CH4) by the following…

A: The balanced reaction taking place is given as, => 2 NH3 (g) + 3 O2 (g) + 2 CH4 (g)…

Q: Al,O3 Br2 (9) AIBT, 3. If you begin the reaction with 5.62 x 1023 molecules of aluminum bromide and…

A: firstly , we will write a balanced chemical equation of above reaction.…

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Q: Aspirin can be prepared from salicylic acid (C7H;O3), which has a molar mass of 138.12 g/mol, and…

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Q: 6. How many oxygen atoms are there in 2.5 g of oxygen gas? a. 2.4 x 1022 b. 4.7 x 1022 c. 9.4 x 1022…

A:

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.