Please solve a, b and c with appropriate number of significant figures in the final solution Determine the empirical and molecular formula of the following: a. caffeine, 49.48%C; 5.19%H, 28.85%N and 16.48%O; Molar mass = 194.2. b. octene, 85.7%C and 14.3%H; Molar mass = 112. c. an oxide of phosphorous, 43.7%P and 56.3%O; Molar mass = 284.

Q: 77. A binary compound of boron and hydrogen has the following percentage composition: 78.14% boron,…

A: Determination of empirical formula The percentage composition of elements present in given compound…

Q: 0.279 g of the hydrate CoCl2•nH2O is heated to produce 0.197 g of anhydrous CoCl2 (MM = 129.83…

A: Given: Mass of hydrate = 0.279 g Mass of anhydrous CoCl2 = 0.197 g Molar mass of CoCl2 = 129.83…

Q: A 2.68 gram sample of a KCl and KCIO3 mixture was found to contain 0.01541 mol of KCIO3. What is the…

A:

Q: cive Lp? Resources A compound is 53.31% C, 11.18% H, and 35.51% O by mass. What is its empirical…

A: Given,Mass percentage of C = 53.31 %Mass percentage of H = 11.18 %Mass percentage of O = 35.51 %This…

Q: Most of the commercial HCI is prepared by heating Nacl with concentrated H,SO.. How many pounds of…

A: Balanced equation of the reaction                             2NaCl + H2SO4 ------> 2HCl + Na2SO4…

Q: A 2.37 gram sample of a KCI and KCIO3 mixture was found to contain 0.01611 mol of KCIO3. What is the…

A: Mass of mixture of KCl and KClO3 = 2.37 g Number of moles of KClO3 = 0.01611 mol Molar mass of KClO3…

Q: determine its empirical formula.

A:

Q: 3. Find the mass (m) of the following samples in two decimal places. a) How many grams of sodium…

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Q: 3.4.3 Determine the empirical formula of a compound that has the following composition: 92.3 percent…

A: The reduced ratio of the elements in a compound is represented by the empirical formula of the…

Q: A mixture weighing 6.200g is 28.0% silicon dioxide or sand, SiO2, 36.0% sodium chloride, or table…

A: We have to calculate the mass (grams) of the baking soda present in 6.200 g of mixture which has…

Q: 3.116 Carbohydrates are compounds containing carbon,hydrogen, and oxygen in which the hydrogen to…

A: EMPIRICAL FORMULA It represents the lowest whole number ratio of atoms existing in a compound. Steps…

Q: a. What is the percent (by mass) sodium in sodium nitrite? b. A particular brand of beef jerky…

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Q: Q2 / When you dilute 5 ml of sodium carbonate (its molecular weight 106) with a concentration of…

A:

Q: compound is isolated from the rind of lemons that is found to be 88.14% carbon and 11.86% hydrogen…

A: The mass or the amount of a particular substance in the total mass of a sample is called its mass…

Q: 3.149 Lysine, an essential amino acid in the human body,contains C, H, O, and N. In one experiment,…

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Q: 1. Mol NaOH = L HCl * Molarity of HCl * Stoichiometry (mol NaOH / mol HCl) Molarity of HCL= 0.116…

A: 1.

Q: An unknown compound has the following percent compositions: 55.81% C, 7.025% H and 37.17% O. a)…

A: Given: percent composition of Carbon = 55.81% percent composition of Hydrogen = 7.025%  percent…

Q: How many moles of H2SO4 are there in 191 mL of a stock solution that reads 0.601M ?

A: Interpretation -  To determine the number of mole of  H2SO4 are there in 191 mL of a stock solution…

Q: What is the molarity of a solution prepared by dissolving 37 mol KMNO4 in enough water to make 903 L…

A: Dear student I have given answer to your question in the image format.

Q: percent by mass

A:

Q: What is the mass percentage of C in morphine, C,,H1,NO,? Provide an answer to two decimal places.

A: We have many molecules around us. They all are composed of different elements and have different…

Q: A completely made up chemical compound (molar mass = 697.15g/mol) is made up of 75.33% Xe and 13.77%…

A: Number of moles of Xenon, Oxygen and Fluorine can be calculated by the equation given below: No. of…

Q: . A chemistry student took 10.0 g of an unknown hydrate and heated it in order to drive off the…

A: Given: Mass of hydrated sample = 10 g Mass of anhydrous salt = 5.83 g

Q: You dissolve 25 g of CaS04 in water and dilute to 1500 mL. What is the molarity of this solution?…

A: Molarity is the moles of solute dissolved in1 litre of solution .

Q: A commonly used to preservative has the following percent composition: 68.85% C, 4.95% H, and 26.21%…

A: It is the formula which expresses the smallest whole number ratio of the constituent atom within…

Q: In each pair, choose the larger of the indicated quantities orstate that the samples are equal:(a)…

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

Q: 7. A sample of aluminum weighing 0.135 g combined with sulfur to form 0.375 g of aluminum sulfide.…

A: It is given that 0.135 g of aluminium is combined with sulphur to form 0.375 g of Aluminium…

Q: How many molecules of CH, are in these 5.00g? How many moles of Cl, are in 15.0 g of Cl,? How many…

A: Given, chemical reaction takes place between methane and chlorine. The balanced chemical equation of…

Q: Concentrated sulfuric acid contains 96.5% w/w H2SO4 in water. If the SG of concentrated H2SO4 is…

A: Given, Specific gravity - 1.84 Volume of the solution - 150 mL Concentration of H2SO4 - 96.5%(w/w)

Q: ccording to the following reaction, how many moles of hydrofluoric acid will be formed upon the…

A: Interpretation: According to the following reaction, the amount of moles of hydrofluoric acid formed…

Q: Phenol is a compound of carbon, hydrogen and oxygen that is used commonly as disinfectant.…

A: 175 mg sample of phenol yielded 491 mg CO2 and 100 mg H2O. We need to calculate the empirical…

Q: Mass of sample: 0.60g Mass of top of funnel + filter paper: 14.72g Mass of top of funnel + filter…

A: Given values are the following. Mass of sample…

Q: Johny isolated 25 g of a compound following a procedure that would theoretically yield 81 g. What…

A: The percent yield is defined as the ratio of practical yield to that of theoretical yield,…

Q: A sunscreen preparation contains 2.30 %% by mass benzyl salicylate. If a tube contains 6.0 ozoz of…

A: The main component of sunscreen is benzyl salicylate. The formulation contain 2.30% benzyl…

Q: A 0.2356 g sample containing only NaCl ( 58.44g/mol ) and BaCl 2 (208.23g/mol) yielded 0.4637 g of…

A: Given: Mass of the sample = 0.2356g Molar mass of NaCl= 58.44 g/mol Molar mass of BaCl2= 208.23…

Q: A completely made up chemical compound (molar mass = 371.88g/mol) is made up of 40.9% F and 33.32% P…

A: Empirical formula is the formula of a compound having ratio of atoms in small possible integers.…

Q: Q3. 30 ml of 0.4 N CaCl2 is mixed with 40 ml of 0.2 N Al2(SO4)3. How many gram of CASO4 are formed.

A: First write equation of reaction. Find limiting agent. Based on given data calculate mass of caso4.

Q: 5. a) Peroxyacylnitrate (PAN) is one of the components of smog. It is a compound of C, H, N, and O.…

A: First of all we need to calculate the approximate mole of given element to get the empirical…

Q: If you used twice as much copper(ii) sulfate •n hydrate at the beginning of a lab would you expect…

A: Given that : We have to determine whether the empirical formula to be the same or different if we…

Q: 3. A compound's moleeular mass is 480 g/mol. Its percentage composition is 60% sulfur and 40%…

A:

Q: The empirical formula of a compound is CH. If the molar mass of the compound is 104.1g/mole, what is…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: A solid hydrate weighing 2.682 g was heated to drive off water. A solid anhydrous residue remained.…

A:

Q: Nicotine is a poisonous, addictive compound found in to-bacco. A sample of nicotine contains 6.16…

A: A chiral alkaloid produced by a specific plant family is nicotine.  Given: Moles of carbon = 6.16…

Q: How many moles of CrO42- are in 5.0 mL of 0.0024 M K­2CrO4? How many moles of Ag+ are in 5.0 mL of…

A:

Q: Percentage to Compounds to formulas Question Part 1: A compound is found to contain 26.73 %…

A: "Empirical formulas" are the reduced representation of a compound’s chemical composition.…

Q: part A How many moles of K2CrO4 are in 61.14 g K2CrO4 ? Part B How many moles of CaC2O4⋅H2O are…

A: One mole of any substance contains Avogadro's number of atoms or molecules in a compound, and one…

Q: Calculate the moles of CH4 (methane) in 4.7 x 1027 molecules. someone else answered this but the…

A: Molecules of CH4 = 4.7 x 1027  Moles =?

Q: A compound is 40.0% C, 6.70% H, and 53.3% O by mass. Assume that we have a 100.-g sample of this…

A: Assuming the empirical formula of the compound is CaHbOc. And mass of sample = 100 g Given : mass…

Q: How many moles of H2SO4 are there in 117.4 mL of a stock solution that reads 0.763M ?

A:

Q: Calculate the empirical formula of a compound that is 68.2% arsenic, 2.81% hydrogen, and 29.0%…

A: The empirical formula mass of a compound refers to the sum of the atomic masses of various atoms…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.