17) The mass % of Al in aluminum sulfate (Al2(SO4)3) is A) 7.886 B) 15.77 C) 21.93 D) 45.70 E) 34.94

Q: the insecticide DDD contains only c,h, and cl. When 3.2 g is combusted, 6.162 g of Co2 and 0.9008 g…

A: Given : DDD contains only C, H and Cl atoms. Mass of DDD combusted = 3.2 g Mass of CO2 produced on…

Q: In 1987 the first substance to act as a superconductor at a temperature above that of liquid…

A: Mass percent can be calculated using following formula.

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

A:

Q: Mass of watch glass and evaporating dish (g) 52.08 Mass of watch glass, evaporating dish, and Mg…

A: Given- Mass of watch glass and evaporating dish = 52.08 g Mass of watch glass, evaporating dish, and…

Q: Mass of collected Barium sulfate = 0.55g Calculate the moles of BaSO4 collected

A: Mole concept: The number of atoms of molecules present in one mole of the sample is equal to the…

Q: Consider the reaction. Pb(SO,), + 2 Zn → 2 ZNSO, + Pb If 0.234 mol of zinc reacts with excess…

A: Recall the given reaction       PbSO42 + 2Zn → 2ZnSO4 + Pb Given that 0.234 moles of zinc have been…

Q: 26. a. Calculate the the molecular weight of Na2SO4 Atom Number of atoms Atomic Mass Total mass…

A:

Q: Determine the molar mass of Mn(ClO3)4

A: In Mn(ClO3)4,

Q: What is the formula weight of the compound? (Mg = 24.31 amu, Cl = 35.45 amu, O = 16 amu, H = 1.01…

A: Formula:  MgCl2.H2O Mass of Mg = 24.31amu Mass of Cl = 35.45amu Mass of H = 1.01 amu Mass of O = 16…

Q: A compound's molar mass is 400 g/mol. Its percentage composition is 75.00% carbon, 5.05% hydrogen,…

A: Percentage composition can be used to find the moles of each atom present in the formula.

Q: Write the balanced equation, then outline the steps necessary to determine the information requested…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: 2. A compound was analyzed and found to have the following percentage composition by mass: Cu:…

A: Given composition of compound : Cu= 49.73% P= 16.28 % O= 33.99 %

Q: [References] A sample of limestone and other soil materials was heated, and the limestone decomposed…

A: Calcium carbonate decomposes into calcium oxide and carbon dioxide. The equation for the balanced…

Q: A mixture contains NaHCO3 together with unreactive components. A 1.62 g sample of the mixture reacts…

A: Use stoichiometry of the reaction to get answer.

Q: A compound of copper was formed when 1.643 g of Cu was heated in oxygen. The mass of the compound…

A:

Q: 2.00 mol of CO2  A) 6.022 x 10^22 molecules B)44.01 g C)3 atoms total

A: The molecule given is CO2 with moles of CO2 = 2 Since 1 molecule of CO2 has  1) 1 atom of C  2) 2…

Q: A molecular substance contains only carbon and hydrogen and has an empirical formula of C15H9 and a…

A: Empirical formula The empirical formula is the molecular formula of the compound that represents the…

Q: 6.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A:

Q: balance this chemical reaction            ____C6H12O6   →      ____   C3H6O3

A: Given reaction is, ____C6H12O6   →      ____   C3H6O3

Q: A compound was found by elemental analysis to contain 39.96 % carbon, 13.42 % hydrogen, and 46.62 %…

A: Molecular formula is the formula of the molecule in which all the atoms are represented with number…

Q: 4. Potassium permanganate Туре of Atoms Amount of Total each atom amount Mass of each Formula Total…

A: Given :  To find the type of atoms and total molar mass for the following compounds. 1. KMnO4  2.…

Q: Consider the following balanced equation: Fe3O4   +   4 H2   →   3 Fe   +   4 H2O How many moles…

A: From the reaction we can see that,  4 moles of H2 react with 1 mole of Fe3O4 and gives 3 moles of…

Q: Compound X is consisting of 38.70% carbon, 51.60% oxygen and the rest is hydrogen. The molar mass of…

A: Given:  Mass ℅ of carbon = 38.70 ℅ Mass ℅ of oxygen = 51.60 ℅

Q: 9. Determine the molar mass (also called formula weight) of the following compounds: a. СаCl, b.…

A:

Q: A 3.859 g sample containing impure CuCl2· 2 H20 was heated to constant mass. The sample mass after…

A: The impure sample of CuCl2.2H2O heating to drive off all the water then the mass of the mixture is…

Q: lodine chloride, ICI, can be made by the following reaction between iodine, L, potassium iodate,…

A: A balanced chemical reaction is one that has equal number of atoms of an element in reactants and…

Q: 2NaNH2 + N2O ⟶ NaN3 + NaOH + NH3­­ If 665 g NaNH2 reacts with 425 g N2O, (b) Calculate the mass of…

A: Moles of NaNH2 taken = mass / molar mass molar mass of NaNH2 = 39 g/mol Hence moles of NaNH2 taken =…

Q: a. Calculate the molar mass of Al2O3. Molar mass = g/mol b. Calculate the molar mass of Al(NOS)3.…

A: a) Molar mass of Al2O3 = ?  b) Molar mass of Al(NO3)3 = ?

Q: Mass of Container + Sample 2.70 Mass of Container 1.95 48.00 % of Sand % of Ammonium Chloride 16.00…

A: Given: (1) Mass of container + sample = 2.70 g (2) Mass of container = 1.95 g   (3) % sand = 48.00…

Q: An aqueous solution is to be prepared that will be 3.87% by mass ammonium nitrate. What mass of…

A: Given :  Mass percent of ammonium nitrate = 3.87% Mass of solution = 1.23 kg To find  Mass = g…

Q: You have a compound that is 79.9% C and 20.1% H by mass. a. Determine the empirical formula.

A: Given information,   Compound with 79.9% C and 20.1% H by mass.

Q: 4. An 8.00 gram sample of the hydrated salt, CoCl2 • X H2O was thermally decomposed into anhydrous…

A: The question is based on the concept of reaction stoichiometry. We have  to calculate mole ratio of…

Q: A compound of mass 0.496g consisted of only C,H and O. It was completely burned in oxygen,producing…

A:

Q: f 145 g N2H4 and 175 g N2O4 are allowed to react, 2 N2H4 (liquid) + N2O4 (liquid) → 3 N2 (gas) + 4…

A: In a chemical reaction, two or more reactants react with each other to form new substances. This new…

Q: 5. Magnesium Phosphate a. Calculate it's molar masS b. 183.58g of Magnesium Phosphate = mols…

A: Number of moles is the ratio of given mass of the substance to the molecular mass of the substance.

Q: 6.50 g of a certain Compound X, known to be made of carbon and hydrogen, and to have a molecular…

A:

Q: The atomic molar mass of some elements, as shown in the periodic table, is as fa Atomic molar mass…

A: given, the atomic mass of calcium, Ca = 40.08 g/mol the atomic mass of carbon, C = 12.01 g/mol the…

Q: A sample is found to contain 66.8 % NaHCO, by mass. What is the mass of NaHCO, in 4.25 g of the…

A: Mass by mass percentage (w/w) When mass of solute in a solution is expressed in grams of solute in…

Q: A compound's molar mass is 240 g/mol. Its percentage composition is 75.00% carbon, 5.05% hydrogen,…

A: We have given that  A compound molar mass is 240g/mole its percentage composition is 75.00% Carbon…

Q: 47. Calculate the molar mass of the following substances. a. H. b. H c. (NH,),Cr,O,

A: Atomic mass of an atom is the total number of protons present in that atom. While the sum of atomic…

Q: The characteristic odor of decaying flesh is due to the presence of various nitrogen-containing…

A: The molar mass of any substance is the mass present in one mole of the substance and the molecular…

Q: A compound is composed of carbon, hydrogen, nitrogen and oxygen. When a 1.500-g sample of the…

A: Given- mass of sample = 1.500 g combustion yields - CO2 = 1.476 g H2O = 0.605 g N2 = 0.313 g To find…

Q: A 4.200 g sample containing impure CuCl2- 2 H20 was heated to constant mass. The sample mass after…

A: Mass of impure hydrated sample = 4.200 g  Mass of sample after heating = 3.362 g   We need to find…

Q: An impure sample of table salt (NaCl) that was dissolved in water and treated with silver nitrate to…

A: Mass of the impure sample = 1.741 g  Mass of AgCl formed = 4.084 g

Q: What is the mass percentage of C in CH,CH,OH?

A:

Q: what mass of Al2S3(g Al2S3) would be produced if 9.886 g Al were reacted with excess Ag2S?

A:

Q: Question is attached

A:

Q: d) Determine the percentage composition. 1. C6H13OH 2. KCIO3 3. C2H5OH

A: 4NH3 + 5O2--------->6H2O +4NO The given equation is already balanced.

Q: 3.75 Elemental phosphorus occurs as tetratomic molecules, P4. What mass (g) of chlorine gas is…

A: In this question, we want to determine the mass of Cl2 gas, and mass of P4 is give to you  You can…

Q: Given 9.4 moles of Ca, the mass can be calculated as: (Hint: Molar mass of Ca is 40 g/mol). O a.…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

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".