A student uses gravimetric determination to find the water of hydration of a hydrated sample of cobalt (II) sulfate. The student’s sample contained 0.0098459 moles of anhydrous cobalt(II) sulfate (CoSO4) and 0.068921 moles of water (H2O). What is the formula of the cobalt(II) sulfate hydrate?

Q: Determine the theoretical mass of aspirin (acetyl salicylic acid) when using 3.682 grams of…

A: Salicylic acid reacts with acetic anhydride to give aspirin or acetylsalicylic acid and acetic acid.…

Q: A 25.0 mL aqueous solution of 1.32 M K₂SO4 is necessary for a particular reaction. How many grams of…

A: Molarity of substance is the number of moles present in one litre of solution.

Q: you mix 13.4 mL of 0.320 M solution of K2CrO4 with 44.8 mL of a 0.320 M solution of AgNO3, what mass…

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

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Q: How many grams of oxygen gas are produced when 2.43 x 10-g of KCIO: are completely reacted according…

A: Stoichiometry involves the calculation of concentration of solutions in the given conditions of…

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

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Q: For the following reaction, 15.1 grams of chlorine gas are allowed to react with 45.4 grams of…

A:

Q: The following precipitation reaction is performed using 2.000 g of each of the reactants. Fill in…

A: The mass of the reactants (CaCl2 and Na3PO4) = 2.000 g

Q: A student carefully measures 1.069 g of an unknown brown copper chloride and dissolves it into…

A: Let the empirical formula of the copper chloride be CuClx. Copper chloride reacts with Zinc to form…

Q: City water supplies are fluoridated by adding sodium fluoride to the water. If you live in a city of…

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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: Hydrogen peroxide decomposes as shown below: 2H2O2 → 2H2O + O2 (34.0 g/mol) If a 6.287 g sample of…

A: The mass of a sample of hydrogen peroxide solution is 6.287 g.The moles of oxygen gas produced is…

Q: A chemical plant uses electrical energy to decompose aqueous solutions of NaCl to give Cl2, H2, and…

A: Solution stoichiometry involves the calculation of concentration of solutions in the given…

Q: 1. When heated, calcium carbonate decomposes according to the equation: CaCO3(s) →CaO(s) + CO₂(g) A…

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Q: The hydrated salt, MY3.XH2O, was heated strongly in a crucible to remove all the water molecules of…

A: From the given information , we have,         Mass of empty cruicible and cover, m1 = 28.86 g…

Q: Phosphoric acid (H3PO4) can be prepared from phosphorous triiodide (PI3) according to the reaction:…

A: Given: Mass of PI3 = 15 g Molar mass of PI3 = 411.7 g/mol Volume of H2O = 25 mL Molar mass of H2O =…

Q: Hydrobromic acid dissolves solid iron according to the followiaung reaction: Fe(s)+2HBr(aq)→…

A: The reaction of iron and hydrobromide is given by equation 1.So, from equation (1) one mole of iron…

Q: Aluminum metal reacts with bromine according to the following unbalanced equation: Al (s) + Br₂ (1)→…

A: 4. Recall the given unbalanced equation,                      Al s  +  Br2 l  →  AlBr3 sWant to…

Q: If 0.615 g of magnesium hydroxide reacts with 0.950 g of sulfuric acid, what is the mass of…

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Q: 12.00 g of a potassium hydroxide, KOH solution is mixed with 40.00 g of lead (II) nitrate, Pb(NO3)2…

A: Given  Mass of KOH = 12 gram  Mass of Pb( NO3 )2  = 40 gram  Limiting reactant = ?

Q: [Review Topics] [References] Use the References to access important values if needed for this…

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Q: Iron reacts with oxygen at high temperatures to form iron(III) oxide. 4 Fe(s) + 30₂(g) → 2 Fe₂O3(s)…

A: From the given reaction, we need to calculate limiting reagent  theoretical yield  percentage yield…

Q: Suppose a 500. mL flask is filled with 1.3 mol of CH4, 1.2 mol of H₂S and 1.5 mol of CS₂. This…

A: We will first calculate the initial concentration of the given species. Concentration can be…

Q: the References to access important values if needed for this question. For the following reaction,…

A:

Q: The balanced equation below shows a simple way of manufacturing hydrogen gas in lab (you've done…

A: We according the STP condition , 1 mole of gas occupies 22.4 L of volume .   1 mole = 22.4 L  From…

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

A: The balance chemical reaction :  2NH3(g) + 3O2(g) + 2CH4(g) ---Pt---> 2HCN(g) + 6H2O(g)  Mass of…

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A: Theoretical yield is the maximum amount of product that can be formed in a chemical reaction based…

Q: Mercury can be obtained by reacting mercury(II) sulfide (show below) with calcium öxide. It you…

A: The ratio of mass to the molar mass of the substance is known as the number of moles. It is denoted…

Q: A chemist adds 390.0 mL of a 0.149M potassium permanganate (KMnO4) solution to a reaction flask.…

A: Since, Molarity is the number of moles of solute dissolve in one litre of the solution. Thus,

Q: Aspirin can be prepared from salicylic acid ( C7H6O3 ), which has a molar mass of 138.12 g/mol, and…

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Q: - ] 3 Consider the reaction 1205(g) + 5 CO(g) → 5CO2(g) + 2(g) 80.0 grams of iodine pentoxide, 1205…

A: Number of moles is calculated by dividing the given mass with molecular mass. In the given question…

Q: A mixture of barium chloride and sulfuric acid yield the precipitate barium sulfate and hydrochloric…

A: Given: Sulfuric Acid is limiting reagent, 39.5 grams of barium sulfate are produced. Molar mass of…

Q: For the following reaction, 0.370 grams of hydrogen gas are allowed to react with 52.0 grams of…

A: Given,Limiting reagent  =Maximum mass of HI (produced) =Mass of excess reagent  remains after…

Q: 4HF(aq) + CO2 (s) CF4(g) + 2H2O(1) With excess HF, a chemist needs to know what mass (in grams) of…

A: Given reaction is :  4HF (aq)  + CO2 (s) -------> CF4 (g) + 2H2O (l)  Moles of H2O (l) produced =…

Q: Sodium hypochlorite is the active ingredient in most household bleach products. One method of…

A: Given balanced equation: Cl2 (g) + 2NaOH (aq) → NaOCl (aq) + NaCl (aq) + H2O (l) Given that 50.0 g…

Q: For the reaction P4 O10(s) + 6H2O(l) → 4H3PO4(aq), what mass of P4O10 must beconsumed if 1.68 ×…

A:

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".