You are trying to determine the formula for hydrated CaSO4 and you found the following: Mass of hydrated compound (i.e. CaSO4ïXH2O) = 3.09 g Mass of product (i.e., CaSO4) = 2.43 g   What is the empirical formula of this hydrate?

Q: If 1.823 g of cobalt metal react with 0.495 g of oxygen gas, what is the empirical formula of the…

A: The question is based on the concept of elemental analysis. we have been given mass of Cobalt and…

Q: An ionic compound MX3 is prepared according to the following unbalanced chemical equation.   M  +…

A: The number of moles of X2 (nX) is calculated using equation (1) in which N is the number of…

Q: 2) Hydrogen cyanide is produced industrially from the reaction of gaseous ammonia, oxygen, and…

A: Ammonia reacts with oxygen and methane to form hydrogen cyanide and water. The equation for the…

Q: lodine is prepared both in the laboratory and commercially by adding C12(g)C12(g) to an aqueous…

A: Given  2NaI(aq) + Cl2(g)------> I2(s) + 2NaCl(aq) Molecular weight of NaI = 149.89g/mol Molecular…

Q: a. Quinoline, a starting compound for drugs, consists of C, H, and N. Combustion of such compounds…

A: Given: Compound contains only C, H and N. Mass of compound combusted = 9.71 mg = 0.00971 g.…

Q: What gravimetric factor is required to calculate the weight of sulfur trioxide, SO3 (MM = 80.064…

A: We have to tell What gravimetric factor is required to calculate the weight of sulfur trioxide

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

A: To calculate the number of moles, we use the equation:       .....(1) Given the mass of ammonia =…

Q: 1. a. What is the empirical formula of a compound with the following mass composi- tion: 40.92% C…

A:

Q: The empirical formula of propylene is CH2. An experimental determination of the molar mass of…

A: Let the number of carbon atoms be n and the number of hydrogen atoms be 2n in the molecular formula…

Q: The production capacity for acrylonitrile (C₂H₂N) in the United States exceeds 2 million pounds per…

A:

Q: composition by mass: C – 8.7 % ; F -13.8 %; Cl – 77.5 % Calculate the empirical formula of CFC11.…

A: 1) First convert mass into mole by dividing molar mass Then divide least value of mole to all values…

Q: 3 Mesitylene, a hydrocarbon found in crude oil, has an empirical formula of C3H4 and an…

A: Given: Molecular formula = (C3H4)n  And molar mass of the compound = 120.1938 g/mol.

Q: One of the key ingredients in certain cosmetics is Pb2Cl2CO3 and is created as shown in the reaction…

A: Given mass of CO2= 4.87 g  Given mass of H2O = 2.7 g  Given mass of NaCl = 0.46 g  Given mass of PbO…

Q: Nitrogen and oxygen form an extensive series of oxides with the general formula NxOy. What is the…

A: Given:  Empirical formula of Nitrogen oxide is NxOy.

Q: A. Mass of crucible: 12.214 g B. Mass of crucible and hydrate: 13.250 g C. Mass of crucible and…

A: Given, Salt : CuSO4

Q: Suppose you have a compound which has an empirical formula of C4H5N2O and molar mass of 194 g/mol.…

A: We have empirical formula as C4H5N2O We have molar mass as 194 g/mol We have to calculate the…

Q: For many years the recovery of gold—that is, the separation of gold from other materials—involved…

A: Mass relationship :- In these problem ,the mass of one of the reactants/products is to be calculated…

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: 1. The organic solvent thiophene is a carbon-hydrogen-sulfur compound that yields CO2, H2O, and SO2…

A: Given: Mass of compound burned = 1.3020 g. Mass of CO2 produced = 2.7224 g. Mass of H2O produced =…

Q: if you have 1 mol Xe and 1 mol F2,how many moles of XeF4 ,can you create in the following chemical…

A: • The given balanced chemical equation is,                   Xe(g) + 2 F2(g) → XeF4(g)    • The…

Q: Prevacid is used to treat gastroesophageal reflux disease (GERD).Thechemical formula of Prevacid is…

A: The question is based on mole concept. we have to calculate the mass of fluorine atoms of carbon.…

Q: Ethyl alcohol (C2H5OH), also called grain alcohol, can be made by the fermentation of glucose:…

A:

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

A: Limiting reactant :-  A reactant which is present in lesser number of moles than required as per…

Q: The borax powder has the formula Na2B4O7.X H2O when 2.10 g of hydrate is heated in a crucible until…

A: given data is  amount of sample taken is 2.10g residue left is 1.10g M.Wt of Na2B4O7  is 201.0g

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

A: Given Chemical Reaction: 2NH3 + 3O2 +2CH4 -------> 2HCN +6H2O. To solve this problem we will be…

Q: The molecular formula for dinitrogen tetraoxide is N,O,. Is this the empirical formula for this…

A: The empirical formula can be defined as the simplest whole-number ratio of all the atoms present in…

Q: 4.2 A compound that can be sampled or "smelled by sniffing your armpits or someone's unwashed feet,…

A: The percent of carbon, Hydrogen, Oxygen is 55.80 %, 7.03 %, 37.17 % respectively

Q: Ammonia gas can be prepared by the reaction of a metal oxide such as calcium oxide with ammonium…

A:

Q: A chemical is found to be 75.69% C, 8.80% H, and 15.51% O. What is the empirical formula?

A: Empirical formula of a substance shows the ratio of different elements present in a compound, which…

Q: Ethylene glycol, the substance used in automobile antifreeze, is composed of 38.7% C, 9.7% H, and…

A: Let us assume we have 100 g of Ethylene glycol, then percentages become grams as follows –  mass of…

Q: a What is the maximum mass of ammonia that can be produced from a mixture of 1.00 x 10 g N2 and 5.60…

A:

Q: A 4.73 mg sample of a compound containing carbon, hydrogen, and oxygen underwent combustion…

A:

Q: A combustion analysis of a 0.44g sample of an unknown compound yields 0.88 g CO and 0.36 g HO. If…

A:

Q: Nitroglycerin (C3H5N3O9) is a powerful explosive. Its decomposition may be represented by 4C3H5N3O9…

A: 4C3H5N3O9 ⟶ 6N2 + 12CO2 + 10H2O + O2 Mass of C3H5N3O9= 2.0x 102 g Molar mass of C3H5N3O9= 227 g/mol…

Q: 3) The combustion of 4.000 g of a compound that contains only C, H, N, and Br yields 3.826 g of CO2…

A:

Q: 3. A student heated an unknown hydrate, Na,SO4 XH,0, in a crucible. The water was driven off,…

A: Mass of water loss = 0.895 g mass of anhydrous salt = 0.695 g MW of anhydrous salt = 142.04 g/mol…

Q: A combustion analysis is a technique to find the the empirical formula of compounds.  In a…

A:

Q: What is the formula (solve for x) for the original hydrated sample of copper (II) sulphate? You…

A:

Q: Acrylonitrile (C3 H3N) is the starting material for many synthetic carpets and fabrics. It is…

A: First we have to determine the limiting reagent. Limiting reagent is that which consumed first or…

Q: A molecule has an empirical formula of CH 2O and a molar mass of 179.9 g/mol. What is the molecular…

A: The empirical formula describes the smallest whole number ratio of atoms present in a compound.…

Q: Iodine is prepared both in the laboratory and commercially by adding Cl2(g)Cl2(g) to an aqueous…

A: The balanced reaction is as follows: Molar mass of NaI = 149.89 g Molar mass of I2 = 253.81 g

Q: Consider following reaction: 4 Al (s) + 5 O2(g) ? 2 Al2O5(s) What mass of Al2O5 (in grams) is…

A: Consider the given information is as follows; Mass of Al2O5 formed = ?    Mass of O2 = 96.0 g Moles…

Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…

A: Given that :-  saturated carboxylic acids has the general formula CnH2n+1COOH  Atomic weights:- 1) C…

Q: Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs,…

A:

Q: 4. Salicylic acid is an organic compound composed of 61 % C, 7% H, and the rest is oxygen. If 0.218…

A: Given, In salicylic acid; Percent composition of C=61% Percent composition of H=7% Percent…

Q: (a) What is the difference between adding subscript 2 to the end of the formula for CO to give CO2…

A: A question based on general chemistry, which is to be accomplished.

Q: odine is prepared both in the laboratory and commercially by adding Cl2(g)Cl2(g) to an aqueous…

A: Given, Iodine is prepared both in the laboratory and commercially by adding Cl2(g) to an aqueous…

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.