One of the hydrates of MgI2 is magnesium iodide octahydrate .A 89.9 gram sample of MgI2  8 H2O was heated thoroughly in a porcelain crucible, until its weight remained constant. After heating, how many grams of the anhydrous compound remained?

Q: One of the hydrates of Na2CO3 is sodium carbonate decahydrate A 55.6 gram sample of Na2CO3  10 H2O…

A: b b

Q: If 4.1 g of Cr is heated with 9.3 g of Cl2 what mass CrCl3 will be produced?

A: Mass of Cr = 4.1 g Mass of Cl2 = 9.3 g The molar mass of Cr = 52 g/mol The molar mass of Cl2 =71…

Q: A sample of phosphorous is placed in a 10.05 g crucible and gives 10.24 g then heated red hot to…

A: Mass of empty crucible =10.05g Mass of phosphorus  + crucible =10.24 g Mass of phosphorus oxide +…

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: A sample of hydrate was heated thoroughly. How many waters of hydration are there if the anhydrous…

A:

Q: Calculate the mass in grams of iodine (I2) that will reactcompletely with 20.4 g of aluminum (Al) to…

A: Given data contains, Mass of aluminum is 20.4 g.

Q: 2. You start with 2.46 g of KCIO345) and heat it. Use stoichiometry to calculate the mass (g) of KCI…

A:

Q: Barium metel was quantitatively precipitaded from 1.52g sample of BaCl2+2H2O. The mass of the barium…

A: Mass percentage = (mass of solute / mass of solution) x 100%

Q: how many moles of Fe3O4 are required to supply enough iron to prepare .260 mol Fe2O3?

A: 1 mole of Fe2O3 contains 2 moles of Fe. Hence, 0.260 moles of Fe2O3 will contain 0.260 * 2 = 0.520…

Q: What is the mass of lime, CaO, can be obtained by heating 125 kg of limestone that is 95% by mass…

A: Given, mass of limestone = 125 kg            mass percent of CaCO3 in limestone = 95% Now, moles of…

Q: Consider the reaction 3X + 2Y → 5C + 4D With excess Y, how many moles of X are needed to produce…

A:

Q: A student prepares aspirin using 15.096 grams of salicylic acid (MW = 138 g/mol) and 5.91 mL of…

A:

Q: The molar mass of M(OH)2 formed by the hypothetical metal M, is 144.096 g/mol what is the molar mass…

A: Molar mass of a compound is equal to the sum of the molar masses of all the elements. The molar mass…

Q: A 0.652-g sample of a pure strontium halide reacts with excess sulfuric acid, and the solid…

A: Given data contains, Mass of pure strontium halide is 0.652 g. Mass of solid strontium sulfate is…

Q: What is the mass percentage of C in codeine, C₁₈H₂₁NO₃? Provide an answer to two decimal places.

A:

Q: the mineral gibbsite has the formula al(oh)3. what mass in,in kg, of al is present in 2.9 kg of…

A: Given, mass of gibbsite,  Al(OH)3  = 2.9 kg = 2900 g Thus, moles of gibbsite can be calculated as,…

Q: How many grams of sulfur (S) are needed to react completely with 45.0 g of aluminum (Al) in the…

A: Aluminum reacts with sulfur to form aluminum sulfide. The equation for the balanced chemical…

Q: What is the molar mass, in g/mol, of the hydrate compound with the proposed formula of CrCl3⋅3H2O

A: Since you have posted multiple questions, and these are not related to each other therefore as per…

Q: What is the maximum amount of grams of Fe that can be produced from 33.4 g of iron(iii) oxide mixed…

A: Interpretation: The maximum amount of grams of Fe that can be produced from 33.4 g of iron(iii)…

Q: How many moles of Fe304 are required to supply enough iron to prepare 0.650 mol Fe203? mol Fe304

A: Given: Moles of Fe2O3 = 0.650 mol.

Q: f 37.0 g of MgSO4⋅7H2O is thoroughly heated, what mass of anhydrous magnesium sulfate will remain?…

A: On strong heating, water molecules get removed and turn hydrated salt into anhydrous salt.The…

Q: A mixture of CaCO₃ and CaO weighing 0.693 g was heated to produce gaseous CO₂. After heating, the…

A: Molecular mass The molecular mass is the mass of a given molecule. It is measured in Daltons. The…

Q: Consider the reaction 3X + 2Y→ 5C + 4D With excess Y, how many moles of X are needed to produce…

A: The given reaction is : The number of moles of D to be produced = 21.00 mol

Q: |Solid silver oxide, Ag2O(s), decomposes at tempera- | tures in excess of 300 °C, yielding metallic…

A: The balanced decomposition reaction of silver oxide (Ag2O) at temperature in excess of 3000C can be…

Q: A compound has a molar mass of 28.06 g. What is its chemical formula if carbon and hydrogen are…

A: In this question, chemical formula of the compound is to be determined which consists of carbon and…

Q: If 7.08 g of mercury (Hg) and 0.57 of oxygen are obtained when 7.65 g of HgO decomposes , what is…

A: We have to calculate the percentage composition of the compound.

Q: The molar mass of aspirin is 180.16 g/mol. What is the theoretical yield in grams, for the aspirin…

A: NOTE : Since the concentration of acetic anhydride is not given, I'm assuming it is present in…

Q: A 30.141 mg sample of a chemical known to contain only carbon, hydrogen, sulfur, and oxygen is put…

A: To determine the empirical formula , we would determine the moles of Carbon, Hydrogen , sulfur and…

Q: Calculate the following quantities:  a. mass, in grams, of 0.105 mol sucrose (C₁₂H₂₂O₁₁) b. moles of…

A: a. mass, in grams, of 0.105 mol sucrose (C₁₂H₂₂O₁₁) Given;

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: One of the hydrates of MnSO4 is manganese(II) sulfate dihydrate . A 69.7 gram sample of MnSO4  2…

A:

Q: (a) One molecule of the antibiotic penicillin G has a massof 5.342 x 10-21 g. What is the molar mass…

A:

Q: Consider the reaction 3X + 2Y5C + 4D With excess Y, how many moles of X are needed to produce 13.00…

A:

Q: A Group 2 metal with an electron configuration of [Ne]3s2 combines with fluorine (F2) to produce a…

A:

Q: The density of phosphoric acid (H3PO4) is 1.885 g/cm². How many moles are present in 0.245 L of…

A: NOTE : The units of density will be g/cm3 and not g/cm2. Given : Density of H3PO4 = 1.885 g/cm3 =…

Q: How many moles of glucose can be formed from 2.53 × 1024 H atoms?

A:

Q: Consider the reaction 3X + 2Y→ 5C + 4D With excess Y, how many moles of X are needed to produce…

A: Reaction:    3X  + 2Y  → 5C + 4D   According to the reaction: 4 mol of D is produced when = 3 mol of…

Q: Give the empirical formula for the following compounds: a) b) d) Paragraph BIU A + v GO ...

A: Molecular formula is the formula of a compound that gives the total number of atoms present in that…

Q: calculate the mass of calcium phosphate (in kilograms)

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

Q: What is the maximum mass (in g) of ammonia that can be produced from a mixture of 1.17 ✕ 103 g N2…

A: Welcome to bartleby !

Q: A single tablet of regular strength Tylenol contains 325 mg of the active ingredient, acetaminophen…

A: The molecular formula of acetaminophen has been provided as C8H9NO2.

Q: 9. How many kilograms of iron can be obtained from 635 pounds of an ore that is 72.0% hematite,…

A:

Q: The molar mass of ibuprofen is 206.3 g mol-1 and a standard tablet contains 0.2 g ibuprofen.  What…

A: Given that : The molar mass of ibuprofen = 206.3 g/mol The mass of ibuprofen in a tablet = 0.2 g

Q: Q1) A sample of limestone (containing calcium carbonate, CaCo,) weighing 438 mg is treated with…

A: Molar mass of CaCO3 = 40 + 12 + 3(16) = 100 g Molar mass of CaC2O4 = 40 + 2(12) + 4(16) = 128 g…

Q: A student prepares aspirin using 2.365 grams of salicylic acid (MW = 138 g/mol) and 5.89 mL of…

A:

Q: The molar mass of M(OH)4 by the hypothetical metal M, is 190.052 g/mol what is the molar mass of the…

A: Molar mass of a compound is equal to the sum of the molar masses of all the elements. The molar mass…

Q: what is the mass percentage composition of the elements in the following compounds? Round to the…

A: mass percentage composition can be calculated by  mass % = mass of atom in compound X 100 / mass of…

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

A: The decomposition reaction of CaCO3 can be written as, => CaCO3 (s) ---------> CaO (s) + CO2…

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.