The valuable compound diborane , B2H6, can be made by the reaction: 2NaBH4 + I2               B2H6 + NaI  +H2  You use 1.203 g of NaBH4 (molar mass = 37.8 gl mol) and excess iodine. If you isolate 0.295g of B2H6 (molar mass = 27.6 g/mol), the percentage yield of B2H6 is …………………

Q: Ca(s) + 2HCl(aq) → CaCl2(aq) + H2(g) If 0.500 g of Ca reacts with 0.850 g HCl and 1.21 g CaCl2 are…

A:

Q: 1.18 grams of precipitate was produced by reacting 10.0 mL of BaCl2 and 10.0 mL of Na2SO4 solutions.…

A: Barium chloride reacts with sodium sulfate to form sodium chloride and a precipitate of barium…

Q: 15.50 g of NH4Cl reacts with an excess of AgNO3.  In the reaction 35.50 g AgCl is produced. What is…

A: The balanced reaction taking place is given as, => NH4Cl + AgNO3 ------> AgCl + NH4NO3  Given…

Q: III. Hydrogen peroxide is used as a cleaning agent in the treatment of cuts and abrasions for…

A: Concept based on stoichiometry.

Q: For the reaction З КОН + Н, РО, — К, РО, + 3Н,О 4 4 how many grams of potassium phosphate, K3PO4,…

A: We have given the balance chemical equation as follow      3KOH  +  H3PO4   →  K3PO4  + 3H2O We have…

Q: Which product is a precipitate? Cl2(g) + 2 KI(g) = 2 KCl(g) + I2(s

A: When two or more compounds combined chemically to form an insoluble salt, this reaction is called…

Q: Aspirin can be synthesized in the lab by combining salicylic acid (C7H6O3) and acetic anhydride…

A: Given : reaction Mass of salicylic acid= 2.28 g  Mass of asprin = 2.40 g  Density of acitic…

Q: how many grams of bromine are required to completely react 0.557 grams of aluminum

A: Given :- 2Al  +  3 Br2  --------->  2AlBr3     Mass of Al = 0.557 g  To calculate :- mass of Br2…

Q: Calculate the theoretical yield of CH3OH (Molar mass = 32.0 g mo1) when 0.100 g H2 (Molar mass =…

A: Theoretical Yield: It is the maximum amount of product formed from the given amount of the…

Q: 44. You are setting up a reaction between two chemicals that react according to the equation 3 A + 2…

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

Q: Once the reaction has occurred as completely as possible, what amount (in moles) of the excess…

A: The given chemical equation is perfectly balanced. 2 moles of ZnS requires 3 moles of O2, then 1…

Q: Cu   +   8HNO3  --> 3 Cu(NO3)2    +  2 NO   +  4  H2O In the above equation how many moles of water…

A: Given  Mass of HNO3 = 197.1 g Number of moles of water = ?

Q: 4. For the following synthesis reaction, find the limiting reactant and therefore the theoretical…

A: We know that the limiting reactant of a reaction is the reactant which is present in less quantity…

Q: If you mix 39.7 mL of 0.320 M solution of K2CrO4 with 50.5 mL of a 0.320 M solution of AgNO3, what…

A: The volume of K2CrO4 = 39.7 mL= 0.0397 L The volume of AgNO3 = 50.5 mL= 0.0505 L. The molarity of…

Q: 2. Ionic equation for the reaction of hydrochloric acid with strontium a. Sr (s) + 2HCl(aq) →  Sr…

A: Ionic equation is generally used for reactions in solutions. The individual ions which are present…

Q: 2 K + CuCl2    →   2 KCl  + Cu  How many Cu atoms are produced if 5.1 mole of K is reacted with…

A: Potassium metal reacts with copper(II) chloride to form potassium chloride and copper metal. The…

Q: Balance the reaction PCIs + H₂O → H3PO4 + HCI How many grams of HCl can be obtained from 10 grams of…

A: For balancing of a reaction number of atoms of each element must be equal on reactant side and…

Q: The following two-step process has a 60.0 % yield for each step. CH4 + 4 Cl2 –→ CCl + 4 HCl CCl4 + 2…

A: Given: The yield percentage of each step = 60.0% Moles of CH4 = 6.00 mol.

Q: 1. What type of reaction is: CH4  + 2O2 →  + 2CO2 + 2H2O  +   218 kcal? A) an endothermic reaction…

A: #1) In a Rxn , When two or more substances combine to form a new substance then this type of…

Q: Use the References to access important values if needed for this question. According to the…

A: Given -> Weight of Ca(OH)2 = 31.2 gm -> Sulphuric acid is in excess.

Q: A reaction mixture is prepared containing 1.20g of Al and 0.80 g of MnO2. After the reaction is…

A: Answer: 1.5 g of Al2O3 is produced, according to law of conservation of mass.

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A: Given: When morphine undergoes combustion, carbon dioxide is produced. Mass of mixture            =…

Q: You dissolve 150.0 grams of a mixture of MgCl₂ and KCI in water, add a solution of excess AgNO3, and…

A: Upon adding a suitable ionic compound into an aqueous solution, the ions in the added ionic compound…

Q: : The thermite reaction has been used for welding railroad rails, and to ignite solid-fuel rocket…

A: The thermite reaction occurs as follows: Fe2O3(s) + 2Al(s) → 2Fe(l) + Al2O3(s) 1 mol       2 mol…

Q: Determine the maximum amount of Sg that could be produced by reacting 67.0 g of each reagent. 8 SO2…

A: Consider the given information is as follows; Reaction :         8 SO2       +      16 H2S     →…

Q: A chemist wishes to perform the following reaction: N2 + 3 H2 → 2 NH3 If only 14.0 g of N2 is…

A:

Q: 3. Use the following reactants to predict the products for this reaction and balance the equation.…

A: A balanced chemical equation is defined as the equation where equal numbers of total individual…

Q: Balance the reaction below. The white sphere is element A and the shaded sphere is element B. of O…

A: Consider the given reaction where the white spheres are A and grey spheres are B as; Here, is A2…

Q: How many grams of barium phosphate (601.9 g/mol) can be produced when 6.0g of barium nitrate (261.3…

A:

Q: Consider the reaction between hydrochloric acid and calcium hydroxide: 2 HCI (aq) + Ca(OH)2 (aq) -->…

A: Theoretical yield is the maximum amount of product which can be formed from the given reaction.  We…

Q: 29. The reaction between sulphuric acid, H2SO4 and barium hydroxide, Ba(OH)2 is shown below H2SO4 +…

A: Given reaction is :  H2SO4 + Ba(OH)2 ---------> BaSO4 + 2H2O  Mass of BaSO4 = 4.35 g  Calculate…

Q: In an experiment, you used 4.00 mL of 0.100 M Copper (II) Nitrate and converted it into Copper (II)…

A: Theoretical yield :- The maximum amount of product that can be produced as per balanced chemical…

Q: 3 Cu + 8HNO3 --> 3 Cu(NO3)2 + 2 NO + 4 H2O   In the above equation how many moles of water can be…

A: Given- Reaction-3 Cu + 8 HNO3 → 3 Cu(NO3)2 + 2 NO + 4 H2O Mass of HNO3 = 138.6 grams To find- Number…

Q: Salicylic acid reacts with acetic anhydride to form aspirin, acetylsalicylic acid. If the percent…

A:

Q: Consider the molecule of Nitrous acid, HONO. Its Lewis structure is: H-0–N=0 What is the approximate…

A: To solve this problem we have to draw the structure of given molecule

Q: We did a gravimetric analysis of an unknown sulfate sample (dissolve in water with HCl) and reacted…

A: Answer: When 2 solutions of compounds are mixed and a precipitate formation takes place then such…

Q: Enter your answer in the provided box. Hydrogen fluoride is used in the manufacture of Freons (which…

A: Answer: percent yield of HF is 95.1 %

Q: 3. Ca(OH)2 (aq) + H2SO4 (aq) + 2 H₂O (1) + CaSO4 (aq) (This is LIMITING REACTANT: H2SO4 is the…

A: Since H2SO4 produces the smallest amount of the products, it is the limiting reactant.  Hence we…

Q: im confused on how to do this

A: The number of moles of HCl (n1) in 43.3 g HCl is calculated using equation (1) in which n is the…

Q: When aluminum Is placed in concentrated hydrochloric acid, hydrogen gas is produced. 2A1(s) +…

A:

Q: Baking soda is a pure substance, sodium bicarbonate. Vinegar is a mixture of acetic acid dissolved…

A: Reaction between acetic acid and bicarbonate: CH3COOH (aq) + NaHCO3 (aq) -------------> CH3COONa…

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".