What is the empirical formula of a mineral contg. 3.37% H2O; 19.10% AI, 03; 21.00% CaO, and 56.53% SiO?

Q: 16.792 g of Ba(OH)2 (171.342 g.mol-1) is weighed out and carefully dissolved to make a 500.00cm3…

A:

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: When 250.0 mL of .2500 M Li2CO3 (aq) were mixed with 350.00 mL of .1500M AlBr3 (aq), 2.500 grams of…

A: Molarity of Li2CO3 = 0.2500 M Volume of Li2CO3 = 250 mL = 0.250 L Molarity of AlBr3 = 0.1500 M…

Q: An organic liquid is either methyl alcohol (CH3OH), ethyl alcohol (CH3CH2OH) o a mixture of the two.…

A: The combustion reaction of methyl alcohol and ethyl alcohol:

Q: 2.Iron ore is impure Fe2O3. When Fe2O3 is heated with an excess of carbon (coke), metallic iron and…

A: Weight of sample = 938kg = 938000g Pure iron in sample = 523kg Assuming that impurities donot…

Q: 1.00 mol/L of NaX (aq) contains 4.2% solute by mass, what is the atomic mass of X? What anion could…

A: Molarity = moles of solute/Volume of solution (L)Moles of solute = mass of Solute/molar mass of…

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 crucible is placed on a balance and is found to have a mass of 26.639 grams a sample of…

A: Mass of crucible = 26.639 g Mass of crucible + mass of Na2SO4·xH2O = 27.085 g Therefore mass of…

Q: 011: calculate mass needed to prepare 5.0L of 0.10N Na,CO,(105.99g/mol) from standard solid.

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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 crucible is placed on a balance and is found to have a mass of 26.639 grams a sample of…

A: Since on heating the compound, the mass of water will be lost as it will get vaporised  Hence the…

Q: The semi-precious stone turquoise is a hydrate and with the chemical formula CuAl6(PO4)+(OH):"4 H2O.…

A: Interpretation : Following questions need to be solved .

Q: If a sample of coke is 95% carbon by mass, determine the mass of coke needed to react completely…

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Q: The calcium from a sample of limestone weighing 699mg was precipitated as CaC2O4 and ignited to CaO…

A: The ignition of calcium oxalate can be described as follows: CaC2O4  →  CaCO3  + COCaCO3   →  CaO  +…

Q: When 1.5173 g of an organic iron compound containingFe, C, H, and O was burned in O₂, 2.838 g of CO₂…

A: Number of Mole- Ratio of given mass of substance to the molar mass of substance is called number of…

Q: You very carefully heat the compound for an extended period of time to drive off water, after which…

A: (i) Yes, it is correct formula of hydrated salt (ii) Mass of water = 0.2500 - 0.1598   = 0.0902 g…

Q: Determine the empirical formula of each of the followingcompounds if a sample contains (a) 0.104 mol…

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Q: A 0.8761 g sample of iron ore is dissolved in acid, the iron is oxidized to the +3 state and then…

A:

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:

Q: 109. Elixirs such as Alka-Seltzer use the reaction of sodium bicar- bonate with citric acid in…

A:

Q: 11.) Combining 0.204 mol Fe₂ 03 0 excess carbon produced 18.7 g Fe Fe₂03 30→2Fe + 3 Co What is the…

A:

Q: 16.792 g of Ba(OH)2 (171.342 g.mol-1) is weighed out and carefully dissolved to make a 500.00cm3…

A:

Q: 018302 001608 3. (part a). You are given 0.104 g of a sample of KwFex(C204)y(H₂O) z. In the…

A: Reaction is; 5C2O42-  + 2MnO4- +16H+ --->  10CO2 + 2Mn2+ + 8H2O

Q: First N2(g) + 3H2(g)—2NH3(g) second NH3(g) + 2O2(g)—HNO3(g) + H2O(g). Write the net chemical…

A: Question is based on the concept of chemical reaction. we need to write net chemical reaction taking…

Q: (b) An unknown mass of Na3PO4(s) is dissolved in water to form 50.00 mL of solution. This is…

A: The number of moles of Na3PO4 in the 20.00 mL of the solution B is calculated as shown below.

Q: 16.792 g of Ba(OH)2 (171.342 g.mol-1) is weighed out and carefully dissolved to make a 500.00cm3…

A:

Q: ure Fe2O3.  When solid Fe2O3 is heated with an excess of carbon, iron metal, and carbon monoxide are…

A: When Fe2O3 reacts with carbon, pure iron is obtained. The following reaction takes…

Q: When a solid mixture of MgCO3 and CaCO3 is heated |strongly, carbon dioxide gas is given off and a…

A: The mass percent of MgCO3 in the original mixture is calculated as shown,

Q: 1. Determine the molar mass of (a) MgSO4. (NH4)₂CO4 2. What is the percentage of Ca in CaSO4 3. How…

A: The objective of the question is to calculate the molar mass of

Q: A 102.7-g sample of nitric acid solution that is 70.0% HNO; (by mass) contains a. 4.53 x 10° mol…

A: Mass/volume percentage- is one of the ways to express concentration of solution. Formula is, Number…

Q: The commercial production of nitric acid involves thefollowing chemical reactions:4 NH3(g) + 5…

A: Redox reaction leads to oxidation and reduction processes simultaneously. Oxidation and reduction…

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".