Mass of weighing paper (g)   0.3907 Mass of weighing paper plus aluminum (g)   1.4064 Mass of watch glass (g)   41.4028   Mass of watch glass plus dry alum (g)   54.3336     Mass of aluminum (g)   Mass of dry alum (g)   Theoretical yield (g)   Percent yield (%)

Q: Which of the following factors can be a reason for a percentage yield to be low? 1. Reactant…

A: In this question, we will see whats are the reason for low percentage yield.  You can see details…

Q: Concentration of hydrochloric acid (M) 2.11 Concentration of sodium hydroxide (M) 2.05 Calorimeter…

A:

Q: Calculate the mass of water formed when 0.817 g of aluminum hydroxide reacts with excess…

A: Aluminium hydroxide reacts with hydrochloric acid to form aluminium chloride and water. The equation…

Q: Balance the chemical reaction. ____Pb(NO3)4  + ____Na3PO4   --->     _____ Pb3(PO4)4  +  _____…

A:

Q: Concentration of hydrobromic acid (M) 2.04 Concentration of potassium hydroxide (M) 2.12 Calorimeter…

A: 1.) Mass of solution can be calculated from Total mass of acid and base added . Density would be…

Q: PbCO3(s)→PbO(s)+CO2(g) Balance the question then express your answers as integers separated by…

A: Balanced chemical equation:- It may be defined as the chemical equation which has all the atoms in…

Q: a hydrated CuSO4 salt was heated and thus dehydrated. Determine the % H2O by weight in the hydrated…

A: The number of moles is a ratio of the mass of a substance to the molar mass of the substance.…

Q: Write the reaction that occurs when solutions of lead(II) nitrate and potassium chloride are mixed.…

A: When lead nitrate, Pb(NO3)2 (aq) is treated with KCl (aq) then KNO3 (aq) and PbCl2(s) is formed.…

Q: calcium metal reacts with lead(IV) nitrate in a single displacement reaction. 2.00 g of calcium…

A: Calcium metal reacts with lead(IV) nitrate in a single displacement reaction : 2Ca + Pb(NO3)4 → Pb +…

Q: 1. Calcium nitrate and sodium hydroxide react to form calcium hydroxide and sodium nitrate. a.…

A: Given, mass of NaOH = 25.0 g  Mass of Ca(NO3)2 = 30.0 g

Q: Balance: _____HSiCl3 + ____H2O ---> H10Si10O15 + ___ HCl

A: We know that, Law of conservation of mass  states that all atoms of different elements must be equal…

Q: Balance the following chemical equation Fe3O4(s) +H2(g)-----> Fe(s) +H2O(1)

A:

Q: Magnesium and nitrogen react in a combination reaction to produce magnesium nitride: 3Mg + N2 Mg3N2…

A: 3Mg + N2→Mg3N2 Given 9.27 g-sample Of N2

Q: 636.2 Joules is equal to how many calories

A: Ans  We know that  1 cal  = 4.184 joul 1 joul = 1/4.184 Cal

Q: A 0.156g piece of solid aluminum reacts with gaseous from the atmosphere to form solid aluminum…

A: 4Al  + 3O2 ------------>  2Al2O3  Molecular mass of Al2O3 = 102g

Q: True or false A limiting reactant is completely consumed in the course of a reaction and may be…

A: A Limiting reactant is that chemical compound that gets completely reacted in the reaction. An…

Q: Initial mass of copper (g) 0.477 Mass of evaporating dish (g) 39.960 Mass of copper and evaporating…

A: GIven:   The initial mass of copper  =0.477 g   Mass of evaporating dish =39.960 g   Mass of…

Q: AgNO3 + CaCl2 --> AgCl + Ca(NO3)2 When properly balanced, coefficient of silver nitrate is:

A:

Q: For the following reaction, 4.77 grams of hydrochloric acid are mixed with excess barium hydroxide.…

A: Write down the reaction between HCl and BaOH2. Ba(OH)2 (aq) +2 HCl(aq) → BaCl2(s) + 2 H2O(l) From…

Q: balance the following equation:                    Cu + HNO3 --> Cu(NO3)2 +H2O

A: A balanced equation is one that has same number of atoms of all types in reactants as well as…

Q: ulfur and Fluorine react in a combination reaction to produce sulfur and hexafluoride. In a…

A: The balanced equation for the given reaction is,

Q: Complete the weights of compounds. Show your solution.   Mass of copper (II) sulfate pentahydrate,…

A:

Q: * Identity of Dehydrated salt (for afterwards) Mass of empty dish 70.874g Mass of dish + hydrated…

A: The number of moles of dehydrated salt is 0.002384 mol. nMnCl2=mMnCl2MMMnCl2=0.3 g125.844…

Q: Balance the equation XCl2aq+AgNO3>X(NO3)2aq+AgCl(s)

A: The Equation is balanced when atoms in reactant side and product side are equal . So by multiplying…

Q: Use the information and table to answer the question. A chemistry company is hired to produce sodium…

A: Given that:Nas+HCIaq  → NaCIaq+H2gThe balanced chemical equation is given by,2Nas+2HCIaq  →…

Q: Moles of Element X I Moles of Element Y Moles of Element Z 2.25 2.00 1.75 1.50 1.25 1.00 0.75 0.50…

A: Limiting Reactant :-        The limiting reagent is the reactant that is used up completely. This…

Q: 10.A teaspoon of dry coffee crystals dissolves when mixed in a coup of hot water. This process…

A: The answer to the following question is-

Q: Calculate AS° (JK- mol) for the reaction SICI4(g) + 2 Mg(s) → 2M9CI2(s) + Si(s) Substance SICIA(g)…

A:

Q: Mass (g) Mass of zinc, Zn, Cl, product, and chlorine 33.160 Mass of evaporating dish only 44.013…

A: Given that, Mass of evaporating dish = 33.160 g Mass of crucible cover =44.013 g Mass of evaporating…

Q: A sample contains FeS2. At the end of its gravimetric determination, BaSO4 is weighed and the…

A: Solution:  In quantitative analysis we must know about the chemistry involve for each stoichiometry.…

Q: For Reaction 1: Mg0(s) + 2HCI(aq) MgCl2(aq) + H20(1) 1. 1.1 HCI volume 50 mL (= 50 g) 1.2 t2 32.7 °C…

A:

Q: Balance the equation: XCl2 (aq)+AgNo3 (aq)---->X(NO3 )2 (aq)+AgCl(s)

A:

Q: Balance chemical equation H2SO4+NaOH---->

A: The given Equation can be balanced as follows -

Q: Use the following data to fill up the table in the table in the picture attached Mass of erlenmeyer…

A: Given: Observation table To find: Theoretical yield of aspirin Percent yield of aspirin Solution:…

Q: For the following reaction, 3.91 grams of sulfuric acid are mixed with excess barium hydroxide. The…

A:

Q: Balance the following equation: CH₃ONa + NaCLO₂ + HCl --> COCl₂ + NaCl + H₂O

A: The chemical equations should be balanced in accordance with the law of conservation of mass. This…

Q: The theoretical yield of CCl4 is 50 g. If the actual yield from the reaction is 38 g of CCl4, what…

A: The given problem can be solved by using the formula given below as; Percent Yield=Actual…

Q: an experiment, a hydrated CuSO4 salt was heated and thus dehydrated. Determine the % H2O by weight…

A: We have given that , a hydrated salt  CuSO4  was heated and we get Dehydrated Salt CuSO4  Mass of…

Q: What is the sum of coefficients from the following reaction (both products and reactants)? X.4H2O +…

A: Solution - coefficients -  a coefficient is a multiplicative factor in some term of a polynomial, a…

Q: А. Burning magnesium ribbon Magnesium ribbon (which, like most metals, looks silver and shiny) buns…

A:

Q: Mass of unknown metal (g) Mass of calorimeter cup (g) Mass of calorimeter and water (g) Temperature…

A: Heat gained by water = mwatercwater∆T where, m refers to the mass c refers to the specific heat…

Q: In synthesizing aspirin, a student used 5.324 g of salicylic acid and excess acetic anhydride.…

A: When salicylic acid reacts with acetic anhydride in presence of an acid it forms acetyl salicylic…

Q: Balance the chemical equation:  N2(g) + 02(g) -----> ?

A: The molecular nitrogen and molecular oxygen reacts to give nitrogen dioxides

Q: Determine the mass of the product from the following data.    Mass Aluminum Foil (g)      2.5415…

A:

Q: A 0.231 g piece of solid magnesium reacts with gaseous oxygen from the atmosphere to form solid…

A: Given,  0.231 g piece of solid magnesium reacts with gaseous oxygen from the atmosphere to form…

Q: Maple syrup is made from the sap of a maple tree. Whe the sap is tapped from the tree it is 4.0% by…

A: Here we are required to find the mass of sap that would be needed for making 1kg of syrup

Q: 3. A lactory is pumpingihiercury bydroxide (Hg(OH)inta the Vocal lek a1,250 kilogram sample bf lake…

A:

Q: 3 Fe (s) + 4 H2O (g) →Δ Fe3O4 (s) + 4 H2 (g) Enter your answer in grams for water into the first…

A: Given mass of Fe3O4 = 375 g Molar mass of Fe = 55.845 g/mol Molar mass of Fe3O4 = 231.533 g/mol…

Q: For the following reaction, 5.88 grams of barium hydroxide are mixed with excess sulfuric acid. The…

A: The reaction taking place is given as, => Barium hydroxide (aq) + sulfuric acid (aq) → Barium…

Q: Determine the mass of the product from the following data.    Mass Aluminum Foil (g)      6.3284…

A: Given data,Mass of filter paper+product=86.2751gMass of filter paper=0.2489g

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".