A student is running an experiment in which 28.5 grams of Na2CrO4 is needed, but the only jar of reagent in the lab is labelled sodium chromate decahydrate. How many grams of the hydrate must the student weigh out in order to get the desired amount of the anhydrous compound?

Q: Silicon carbide, SiC, is used as an abrasive for many industrial processes. If you want to produce…

A: Given-> Weight of SiC = 1.00 kg = 1000 gm (1 kg= 1000g)

Q: KOH(s) + CO₂(g) → K₂CO₃(s) + H₂O(l) Calculate the mass in grams of KOH that will be required to…

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Q: Bornite (Cu3FeS3) is a copper ore used in the production of copper. When heated, the following…

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Q: What's the balanced chemical equation of NaOH and CuSO4?

A: The reaction of CuSO4 and NaOH is a double displacement reaction

Q: In the room, the police also found a suspicious amount of CO2 in the air, which is produced when…

A: Combustion reactions of methanol is 2CH4O+3H2O→2CO2+4H2O 2 mole of methanol is producing 2 moles of…

Q: Cryolite, Na3AlF6(s), an ore used in the production of aluminum, can be synthesized using aluminum…

A: Given - Weight of Al2O3= 12.6kg = 12.6 × 103 g (1kg = 1000g) Weight of NaOH=59.4kg = 59.4 × 103 g…

Q: A crystal of the mineral pharmacosiderite, Fe3(AsO4)2(OH)3•5H2O, contains what percent of  oxygen by…

A: The molecular formula of the crystal pharmacosiderite is = Fe3(AsO4)2(OH)3•5H2O One molecule of the…

Q: When 5.942 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 19.34 grams…

A: When organic compounds undergo combustion, they produce carbon dioxide and water. Chemical reactions…

Q: Consider the Harber-Basch process for the synthesis of ammonia from its elements. Calculate the…

A: Interpretation-  To determine the theoretical yield in moles NH3 from the complete reaction of 59.8…

Q: What is the mass, in grams, of 9.71×1024 molecules of methanol (CH3OH)?

A: Introduction :  We need to calculate mass in grams for CH3OH . First convert molecules into moles .

Q: Is the decomposition of CuSO4· 5 H2O a physical or a chemical change? Why?

A: The copper sulfate penthydrate dehydrates to form the clear, anhydrous copper sulfate.

Q: For the compound Ca10(PO4)6(OH)2, what is the molar mass? How many atoms of P are in 35.00 grams of…

A: For molar mass of compound, we should know molar mass of its constituents.

Q: What is the complete balanced reaction for the complete combustion of C8H18 in oxygen? From the…

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Q: Consider the following equation: KOH(s) + CO₂(g) → K₂CO₃(s) + H₂O(l) Calculate the mass in grams of…

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Q: How many grams of Fe is needed to react with 35.0 g of sulfuric acid in the following reaction?…

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Q: what mass of sodium is also produced?

A: Given :- 2Na3N → N2 + 6Na  Mass of N2 produced = 29.7 g  To calculate :-   Mass of sodium (in g)

Q: Ascorbic acid (C₆H₈O₆) is also known as Vitamin C. How many molecules of C₆H₈O₆ does a Vitamin C…

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Q: d e BeCl2 (s) + H₂O(g) → BeO(s) + HCl(g) BeCl₂ (s) + H₂O(g) →→→ BeO(s) + BaH₂ (s) + H₂O(l) → Ba(OH)2…

A: Check the number of elements on both side and try to balance it.

Q: Combustion of a hydrocarbon in a limited supply of air produces CO in addition to CO₂ and H₂O. When…

A: Combustion of 2.33 g of a hydrocarbon C2H5 in air produces 2.24 g CO, 3.53 g CO2 and 3.61 g H2O…

Q: White phosphorus (P4) is used to produce phosphorus oxides, such as P4O10. How many kilograms of…

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Q: If you used twice as much copper (II) sulfate 5 hydrate at the beginning of the lab?, would you…

A: Given: If you used twice as much copper (II) sulfate 5 hydrate at the beginning of the lab, would…

Q: Uranium is used as a fuel, primarily in the form of uranium(IV) oxide, in nuclear power plants. A…

A:

Q: Cellulose, the major component of plant cell walls has an empirical formula of C6H10O5.  One of the…

A: Mass of tree = 3.3×106 kg Cellulose percentage = 45% Mass of cellulose in tree =[ 3.3×106 ×45/100…

Q: If the furnace initially contained 22.322.3 kg of solid calcium oxide and 10.510.5 kg…

A: Given: Mass of CaO = 22.3 kg Mass of P4O10 = 10.5 kg  To find: mass of calcium phosphate in kg…

Q: An organic compound was found to contain only C, H, and C1. When a 1.50 g sample of the compound was…

A: To given solution-Explanation:Complete solution.

Q: 1.How many moles of CuO can be produced from 1.11 mol of Cu2O in the following reaction?…

A: The amount of substance is usually defined in terms of mole. The mole is the SI unit of the quantity…

Q: Starting with the following equation, Fe₂O₃(s) + Al(s) → Fe(l) + Al₂O₃(s) calculate the moles of…

A: We have given that  Starting with the following equation, Fe2O3(s) + Al(s) ------->  Fe(s) +…

Q: What mass of Fe is needed to produce 6 moles of Fe2O3?

A: The mass of 6.022 x 1023molecules/atoms of a substance is equal to its gram molecular mass or gram…

Q: 6) 0.025 MOL OF AN IONIC COMPOUND AlaSp CONTAINS o.05 MOL CATIONS AND 4.5x1022 anions. Given: molar…

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Q: When 4.464 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 14.01 grams…

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Q: Calcium hydride (CaH2) is so reactive with water that it can be used to remove traces of water from…

A: Given that calcium hydride (CaH2) is removed, the trace amount of water from the solvents. Also,…

Q: Calamine is a naturally occurring zinc silicate that contains the equivalent of 67.5% zinc oxide,…

A: Using mole concept we can easily determine how much reactants  is used or composition of elements in…

Q: Cellulose, the major component of plant cell walls has an empirical formula of C6H10O5.  One of the…

A: Mass of  Lindsey Creek redwood (m)  = 3.3 x 106 kg  Mass of cellulose in this  = 45% of (m)  =…

Q: How many moles of lithium hydroxide would be required to produce 82.5 g of Li₂CO₃ in the following…

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Q: for the reaction: 2HNO3 + Mg(OH)2 to form Mg(NO3)2 + 2H2O, how many grams of magnesium nitrate are…

A: The objective of this question is to determine the amount of magnesium nitrate produced from a given…

Q: Balance the following equation: CGH6 (1) + 02 (g)→ CO2 (g) + H20 (g)

A: First balance the carbon atoms then then balance H and O

Q: If exactly 3 moles of propanol (C3H8O) is combusted in the presence of excess oxygen (molecular…

A: The combustion reaction of propanol is expressed as, 2C3H8O+9O2→6CO2+8H2O......(1)