You thoroughly heat a sample of a hydrate whose formulat is CaCl2•4H2O. The mass of your hydrate before heating was 0.5656 g. If you heated the hydrate to drive off all of the water, what is the mass of the residual calcium chloride left over?

Q: How many moles of Al are necessary to form 70.0 g of AlBr₃ from this reaction: 2 Al(s) + 3 Br₂(l) →…

A: Mass of AlBr3 = 70.0 g  Molar mass of AlBr3 = 266.69 g/mol Moles of Al to form 70.0 g of AlBr3 = ?…

Q: If 10 grams of hydrogen are allowed to react with 100 grams of carbon dioxide... a) What is the…

A: Please see the attached image for the solution.If there are queries, please do not hesitate to ask.…

Q: how many grams of H2 are produced

A: Given :- mass of Na = 130 g  To calculate :- mass of H2 produced (in g)

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

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Q: What is the percentage of calcium carbonate present in the original mixture?

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Q: Suppose a piece of silver jewelry contains 7.78×1022 atomsatoms of silver (AgAg).

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Q: The reactant side of a balanced chemical equation is shown below. C₃Hg +50₂ → How many oxygen atoms…

A: Given reaction :  C3H8 + 5O2 ==>

Q: A 13.2010g sample of hydrated zinc sulfate, ZnSO4 • xH2O), was strongly heated until no further…

A: For the reaction., ZnSO4 • xH2O ----> ZnSO4 + xH2O  Given Mass of ZnSO4 • xH2O = 13.2010 g Mass…

Q: A mixture contains NaHCO3 together with unreactive components. A 1.56g sample of the mixture reacts…

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Q: Solid calcium sulfate is collected in a Büchner funnel and dried. The mass of the solid product is…

A: We are given mass of calcium sulfate and we have to find mass of CaCO3

Q: [References] A sample of limestone and other soil materials was heated, and the limestone decomposed…

A: Calcium carbonate decomposes into calcium oxide and carbon dioxide. The equation for the balanced…

Q: un o 8u described in this laboratory. After heating, the sample is found to weigh 2.245 grams. How…

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Q: The amount of product that can be produced depends only on the amount of the limiting reactant…

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Q: What mass of each product is expected when a 6.40 g sample of pure carbon is burned under each of…

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Q: If 45.0 G Of O2 Are Mixed With 45.0 G Of H2 And The Mixture Is Ignited What Mass Of Water Is…

A: Given, mass of O2 =45.0 gmass of H2 =45.0 g are mixed and the mixture is ignited.we are asked to…

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: The molecular weight of benzoic acid, HC7H502, a carboxylic acid used as a food preservative, is…

A: Steps to find molar mass of a compound :determine the number of atoms of each element in the…

Q: hat are the percentages of carbon, hydrogen, and nitrogen in the compound? What is the empirical…

A: Solution: So this question is from the stoichiometry. We  have general knowledge of formulae for…

Q: "If you begin with 202.2 grams of aluminum, how many grams of aluminum oxide can be formed? 4 Al(s)…

A: Given, 4 Al(s) + 3 O2(g) → 2 Al2O3(s) mass of aluminium (Al) react = 202.2 g mass of aluminum oxide…

Q: ABS plastic is a polymer consisting of three monomer units: acrylonitrile (CsHsN), butadiene (C&H6),…

A: Let the mass of the ABS plastic be 100 g. Mass of nitrogen in the ABS plastic = 11.9 g So, moles of…

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: 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: (b) What mass of Na,AlO, can be formed from 165.0 g of NaOH?

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

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Q: Determine the theoretical yield of alum (KAl(SO4)2·12 H2O), in units of g, if a student starts with…

A: Interpretation: The theoretical yield of alum in grams is to be determined. Given: Theoretical yield…

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

A: The solution is given below -

Q: If a 88.2 gram charcoal briquette (assume pure carbon) is burned in an excess of oxygen, what mass…

A: Combustion :- The process of burning a substance in excess of air or oxygen is known as combustion…

Q: When 17.5 grams of aluminum nitrate is added to an excess amount of sodium hydroxide, how many moles…

A: Aluminium nitrate reacts with sodium hydroxide to form hydroxide and sodium nitrate. The equation…

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A: Given: When morphine undergoes combustion, carbon dioxide is produced. Mass of mixture            =…

Q: Limestone (CaCO3) is used to rem heated to form lime (CaO), which 74.2% yield in the overall…

A: The reaction involved are., CaCO3 ---> CaO + CO2 CaO + SO2 ---> CaSO3 S + O2 --> SO2

Q: An organic compound X was found to contain only C, H, and Cl. The following experiments were…

A: In order to determine the empirical formula for the compound X, we need to first find the mass of…

Q: Benzene (C6H6) is a liquid with a density of 0.874 g cm-3. It reacts with oxygen to give carbon…

A: Density of Benzene = 0.874 g cm-3 Volume of Benzene = 21.3 cm3

Q: How many moles of Al are necessary to form 28.6 g of AlBr₃ from this reaction: 2 Al(s) + 3 Br₂(l) →…

A: Given , mass of AlBr₃  = 28.6 g Thus, moles of AlBr₃  = mass of AlBr₃ molar mass of AlBr₃  = 28.6…

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 =…

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".