You wish to prepare 217 grams of 19.7 % MnCl2. You will need_________________  grams of manganese(II) chloride and_______________  mL of water. Assume that the density

Q: You are drying a sample of Ba3(PO4)2. After 5 minutes of drying it weighs 1.2034 g. You continue to…

A: Answer: Percent change in mass will be the ratio of change in mass with initial mass, therefore %…

Q: Calculate ΔG° for each reaction using ΔG°(f) values:

A: (a)

Q: An ice freezer behind a restaurant has a freon leak, releasing 44.19 g of C, H,F,Cl into the air…

A:

Q: Pesto-Bishop, which helps provide soothing relief for an upset stomach, contains 300 mg bismuth…

A: 1 mg = 1000 g. The molecular formula of C21H15Bi3O2 contains three molecules of bismuth…

Q: A student weighs an empty beaker at 85.301 g. A sample of Na2SO4·??H2O is added to the beaker, and…

A: Mass of empty beaker = 85.301 g  Mass of beaker + hydrated salt = 86.607 g  Mass of beaker +…

Q: Given the following mixture of two compounds 50.00 mL of X (MW =82.00 g/mol)(density 1.034 g/mL) and…

A: Mass percent or % w/w : It is the mass of solute present in 100g of solution % w/w = Mass of solute…

Q: Fingernail–polish remover is primarily acetone (C3H6O). How many acetone molecules are in a bottle…

A: Given: Volume of acetone, V = 325 mL = 325 cm3 Density of acetone, d = 0.788 g/cm3 Mass of acetone =…

Q: 2NH3(8)+302(8)+2CH4(g) 2HCN(g)+6H2O(g) kJ

A:

Q: 2) Mel 1.) 3.) H;0“, H;O Molecular Sieves b.) 1.) c.) 1.) a) 1.) H. 2)

A:

Q: Aluminum hydroxide is one component of antacids for hyperacidity. If one tablet contains 178 mg,…

A:

Q: example of a homogeneous mixture is:     2.65 g Citric acid (H3C6H5O4)     0.023 M KSCN (aq)…

A: An mixture which is made up of two or more different substances through physical combination.

Q: in a pure sample of blue vitriol, the Cu content is 25.45%. what is the percentage of water?

A:

Q: If 10.00 ml of 0.0131 M KIO3 are used in the first part of the standardization process, how many…

A:

Q: 1. КОН / Н2О L 2. H30* 1. l2, NaOH / H20 M 2. HСI

A: Organic Transformation for the given Mentioned reaction  1st Basic Hydrolysis  2nd Iodoform followed…

Q: O CCC Scale, Proportion, and Quantity A simple bread recipe calls for 400 g of flour, 8 g of salt…

A: For making 1loaf of bread we need 400g flour + 8g of salt (NaCl) + 1g of yeast + 0.3L of water.  We…

Q: If liquid bromine has density = 3.12 g/mL, how many Br2 molecules are present in a 1.0-mL sample of…

A: Given: Density of liquid bromine (d) = 3.12 g/ml The volume of liquid bromine =1.0 ml To find:…

Q: A 100 mL solution of theobromine in water is made, and the solution has a density of 1.16 g/mL. If…

A: Given: Density of theobromine solution = 1.16 g/mL The density of water = 1g/mL, To calculate:…

Q: How many grams of Ca(NO3)2 contains 36 grams of oxygen atoms? (A) 15 g (B) 30. g (C) 24.5 g (D) 37…

A: molar mass is defined when we take mass for only one mole ie, for 6.023 ×10-23 atoms. If we have to…

Q: Commercial solvents are commonly sold in 55-gallon drums. What is the weight in pound of the carbon…

A: Volume of the solvent = 55 gallon Volume of solvent in cc = 208198 cm3 (since 1 gallon = 3785.41…

Q: a) What is the mass, in grams, of 5.000 moles of carbon atoms? b)What is the average mass, in…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: 4. Fill in the blanks. Acid Ка pKa Methanoic acid, HCOOH Ethanoic acid, CH3COOH Hydrocyanic acid,…

A: Note: As per our guidelines, we are supposed to answer only one question when multiple questions are…

Q: SOLUTE (NONELECTROLYTE) SOLVENT (WATER) Mass (g) MW (g/mol) Density (g/mL) 60 700 200 18 1.5 1.0

A: Answer: In this question we have to find out the value of different concentration terms with the…

Q: A titanium ore contains rutile (TiO2) plus some oxides of iron and silica. When it is heated with…

A: Reaction: TiO2 + C + Cl2 ---> TiCl4 + Cl2 molecular mass of TiO2 = 79.866 g/mol molecular mass of…

Q: You wish to prepare 222 grams of 21.0 % Fe(NO3)2. You will need grams of iron(II) nitrate and mL of…

A:

Q: How many grams of nitrous acid can be made from 35.19 grams of water? dinitrogen tetrocide (g) +…

A: Given that: Reaction of dinitrogen tetra oxide with water: N2O4(g) + H2O(l) → HNO3(aq) + HNO2(aq)…

Q: A student prepares aspirin using 17.268 grams of salicylic acid (MW = 138 g/mol) and 5.56 mL of…

A:

Q: 1. What volume of toluene do you need to add to 1 mL of ethyl acetate to make an equi-molar mixture?…

A: Introduction :  Equimolar solutions can be defined as the the solution which contains the same…

Q: Liquid paraffin. 20 mL Zinc oxide . .15 mg Yellow wax, q.s. ad....100 g What is the amount of liquid…

A: The amount of liquid paraffin is 44 g (option b). Hence the correct option is option b.

Q: 1. Write an equation showing how the mass of the substance sought can be converted to the mass of…

A: NOTE

Q: An analytical chemist measures the amount of Elements E, and E, in four samples of an unknown…

A: Since the unknown substance, X contains elements E1 and E2, it can be either a compound of E1 and…

Q: Question 2

A: Given information:Density of copper = 8.97 g/cm3Mass of pure copper = 1.00 kg

Q: If the tax on alcohol is Php 500 per proof gallon, how much tax must be paid on 5 gallons of alcohol…

A:

Q: When answering this problem, report the answer with the appropriate number of significant figures.…

A: Given: Volume of acetic anhydride = 4.85 mL Density of acetic anhydride = 1.081 g/mL Molar mass of…

Q: A drink recipe calls for 600 grams of sugar, 6 liters of water, and 3 package of flavoring. While…

A: Limiting Reagent concept is used wherever one ingredient is limited.

Q: 2. A mixture weighing 1.250 grams is 20.0% sodium nitrate, 56.0% silicon dioxide, and the rest is…

A:

Q: What is the mass (in grams) of 9.39 x 1024 molecules of methanol (CH4O)? First determine the molar…

A:

Q: 2. a) If 24.8 grams of an aqueous solution of iron(III) nitrate, Fe(NO3)3, contains 7.33 grams of…

A: a) Given that : Mass of iron nitrate solution = 24.8 g Mass of iron nitrate = 7.33 g Mass percent of…

Q: Me (ii) 1) DIBAL-H → ? hexane, –70 °C 2) H20/H*

A: 3). DIBAL-H is a reducing agent that reduces the carbonyl group into alcohol.

Q: I just wanted to know how many sig figs are in the answer below? I think it's 2 but I wanted to be…

A: Significant figures contribute to calculations.

Q: If an unknown sample contains 39.04% sulfuric acid by mass, then a 0.9368 g of that sample would…

A: Sulfuric acid reacts with sodium hydroxide to form sodium sulfate and water. The balanced chemical…

Q: 1. Write an equation showing how the mass of the substance sought can be converted to the mass of…

A:

Q: Convert to Moles  2.03X1022 atoms of lithium, Li 1.75 X1025 Formula Units of Sodium Chloride, NaCl…

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…

Q: 1. SC.912.P.8.2 - Discuss volume, compressibility, density, conductivity, malleability, reactivity,…

A: When a mixture(or a pure substance) has a single phase in it, it is called homogenous system. When…

Q: 1.) A pure Alum salt KAl(SO4)212H2O contains 300 mg of Potassium. What is the weight of pure Alum?

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 1 2CH3OH H+ H30* 2 `MgBr +

A:

Q: You wish to prepare 217 grams of 19.0 % Cr(CH3COO). You will need grams of chromium(II) acetate and…

A: Given, 217 gram of 19% Cr(CH3COO)2 solution.we are asked to calculate the mass of Cr(CH3COO)2 and…

Q: 80 g LiCl in 100 g H2O

A: Saturated solution; Saturates solution is defined as the maximum amount of a solute can be dissolved…

Q: Compound Quantity Density Molecular weight 0.789 Ethanol 2.2 mL g/mL 46.07 g/mol 1.049 g/mL Acetic…

A: Answer :-  Moles of Ethyl Acetate, CH3COOC2H5 = 0.0377 mol…

Q: An 8.53 mg sample contains 1.72 mg of phosphorous.  What is the mass percentage of phosphorous in…

A: Given  mass of phosphorous = 1.72 mg mass of compound = 8.53 mg  Formula : mass percentage of…

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".