Which of the following pairs of compounds have the same empirical formula? a. acetylene, C2H2, and benzene, C6H6 b. ethane, C2H6, and butane, C4H10 c. nitrogen dioxide, NO2, and dinitrogen tetroxide, N2O4 d. diphenyl ether, C12H10O, and phenol, C6H5OH

Q: 1) a chemical mole A-is a kind of material B-is a large molecule C-contains an undetermined number…

A: Mole concept: Avogadro's number = 6.022 × 1023 1 mol of any substance contain 6.022 × 1023 molecules…

Q: i. How many atoms of oxygen are in 8.1 g CO,? j. How many atoms of hydrogen are in 5.0 g NH3?

A:

Q: 4. Calculate moles and atoms in 50 grams of 'S'. 5. Find the weight of 30 moles of H2SO, and find…

A:

Q: Leucine is an amino acid with the formula C6H13NO2C6H13NO2. Determine the number of moles of carbon…

A: Given, mass of leucine, C6H13NO2 = 51.90 g Now, moles of leucine can be calculated as,

Q: 15. A compound contains 1.90% H, 67.6% CI, 30.5%O? What is its empirical formula? O A. HCIO B. HCIO2…

A: “Since you have asked multiple question, we will solve the first question for you as per our…

Q: What is the molar mass (in kg/mol) of carbon tetrachloride (CC14)? 6 17 C CL 35.45 12.01 2. 0.2535…

A: Here we are required to find the molar mass of carbon tetrachloride

Q: A typical engagement ring might have a diamond made of pure carbon, weighing 0.12 grams. How many…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: 2. a) How is the mass of one mole of a substance determined? b) How do you determine the number of…

A: Answer of the question given below,

Q: 50 Soap, vitamin Cand orange juice The main constituent of soap has a formula C18HON The formula of…

A:

Q: This is the chemical formula for carvone (the chemical that gives spearmint its flavor): C10H14O An…

A: Carvone has folloing molecular formula C10H14O So, 10 moles Carbon contains per mol of oxygen.

Q: A) Chlorophyll molecules are responsible for the green pigmentation of plants. Differing chemically…

A: Given that : 1 molecule of chlorophyll X contains 4 N atoms. % nitrogen by weight = 6.26 %

Q: What is the empirical formula for the substance in the figure?   A. S2O6 B. S3O C. SO3 D. SO

A: Given ,  %S= 40.05 % Therefore, %O = 100-40.05 =59.95 %

Q: A certain compound containing nitrogen and oxygen is found to have 1.75 g of N for every 1.00 g of…

A: Empirical formula :-  The formula which shows only relative number (simple ratio) of  atoms of…

Q: A faraday is      a mole of protons     a charge of one electron     a mole of electrons…

A: One Faraday of electric charge equlas to the charge on a mole of electrons (e-), that is 6.022 x…

Q: Glycine is an amino acid with the formula C, H, NO,. Determine the number of moles of carbon in…

A: Given  Formula of Glycine = C2H5NO2 Mass of glycine  = 62.83 gram  Number of mole of carbon = ?

Q: Calculate the number of molecules present in each of the following samples.(a) 0.800 mol acetylene,…

A:

Q: . He can tell from elemental analysis that the polymer is made up of only three elements: carbon,…

A: To solve this we have to consider the mass of polymer = 100.0g  Then  Mass of C = 56.45 g  Mass of H…

Q: How many moles are there in 1.81 x 1024 molecules of ammonia? A) 1.00 moles B) 5.00 moles C) 7.00…

A:

Q: 1,What is the percent by mass hydrogen in ammonium hydrogen arsenite (NH4)2HAsO4 Group of answer…

A: Given, compound (NH4)2HAsO4 % Mass of H = ?

Q: A chemist decomposes samples of several compounds; the masses of their constituent elements are…

A: The mass of constituents are , Na= 10.838 g, S = 7.557 g, O = 15.107 g, Molar masses are, Na=…

Q: A sample of a substance contains 2.14% hydrogen, 29.80% nitrogen, and 68.06% oxygen. What is the…

A: Empirical formula of a compound represents the simplest whole number ratio of elements present in…

Q: Polymers are large molecules composed of simple units repeated many times. Thus, they often have…

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

Q: In 7.2 moles of Potassium Dichromate, K2Cr2O7. How many atoms of O are there?

A: Given :- number of moles of K2Cr2O7 = 7.2 mol  To be calculated :- number of O atoms

Q: 212.01) el1.008) Fo-4lo. Potassium manganate is a dark green, crystalline substance whose…

A: The given data contains,       potassium =39.6%      manganese =27.9%      oxygen =32.5%

Q: Which of these are correct/ true?  A. 1 mole of He has the same amount of atoms than 1 mole of Ca B.…

A: There are some correct statements where are written with explanatios.

Q: 5. Which statement is NOT true? a. One mole of a substance contains a fixed number of particles. b.…

A:

Q: A compound has the mass % composition of 49.97 % tungsten, 15.23 % nitrogen, 34.79 % oxygen. What is…

A: Empirical formula is simplest integer ratio of atoms in compound.

Q: This is the chemical formula for methyl tert-butyl ether (the clean-fuel gasoline additive MTBE):…

A: The chemical formula for methyl tert-butyl ether (the clean-fuel gasoline additive MTBE) is…

Q: 10. What does Avogadro's number represent? a. the number of atoms in 1 mol of an element b. the…

A:

Q: How many atoms of oxygen are in 3.52 moles of calcium nitrate?   Select one: a. 8.48 x 10^24 atoms O…

A: Mole is defined as the ratio of given mass and molar mass. The unit of mole is mol. It is utilized…

Q: (c) An organic compound consists of carbon, hydrogen and sulfur only. The percentage of carbon by…

A: We have to find empirical formula for given compound

Q: 11. A compound was found to contain 59.9% C, 8.06% H, and 32.0% O by mass. What is the empirical…

A: Given the precentage composition by mass of carbon, hydrogen and oxygenin a compound.we are asked…

Q: A student was given the following question: How many atoms of Br are in 50 grams of CaBr2? They made…

A: Their set up is wrong the correct set up would be Because we will get 2  moles of Br atom from 1…

Q: A substance, AzB, has the composition by mass of 60% A and 40%B. What is the composition of AB2 by…

A: Find solution below

Q: True or False? True v The mass of 2 moles of sodium is > 23 g. False v The mass of one mole of…

A: Given,

Q: Chlorophyll molecules are responsible for the green pigmentation of plants. Differing chemically…

A: Solution - According to the question - Given - Mass of 5 oxygen = 16 * 5 = 80 Mass of chlorophyll X…

Q: A hydrate of nickel (II) sulfate has the following formula: NiSO4·X H2O. The water in a 0.250 g…

A: Given: Mass of the sample = 0.250 g Standard data: The molar mass of NiSO4 = 154.75 g/mol The…

Q: 4. The Russian Space Agency uses potassium superoxide (KO2) for the chemical oxygen generators in…

A: the given equation is  4KO2 + 2H2O + 4CO2 ------> 4KHCO3 + 3O2 given mass of O2 is 380g

Q: 1,Polymers are large molecules composed of simple units repeated many times. Thus, they often have…

A:

Q: Ibuprofen, the anti inflamatory ingredient in Advil has the formula C13H18O2 A) How many molecules…

A: We have to predict the molecules  , number of H atoms, mole of ibuprofen, mass of ibuprofen.

Q: 4. Which of the following is not a correct description of 16.0 grams of methane, CH₂? A. It is one…

A: One mole compound has a mass equal to the molar mass of the compound. 1 mole of substance contain…

Q: Which of the following compounds have the same empirical formula? O H20 and H2O2 O N204 and NO2 O CO…

A:

Q: How many moles of atoms are in each elemental sample? 1) Express your answer using two significant…

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

Q: Two compounds have the same composition: 92.25% C and 7.75% H. a. Obtain the empirical formula…

A: To find :  a) empirical formula  b) molecular formula   Formulas used -  number of empirical units…

Q: Q11. A compound was found to contain 64.80 % C, 13.62% H, and 21.58% O by mass. What is the…

A:

Q: Q 38

A: The empirical formula of a chemical compound can be derived from some knowledge:- A:- Percentage…

Q: How many moles are there in 7.56 x 10^23 molecules of propane

A: Since 1mole of any compound  contains = 6.023 *1023 molecules  i.e. is equal to Avagadro no.

Q: 1) How many moles are there in 178.66 g of Hexane (C6H14)?   2) Number of atoms of C in 14 moles…

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

Q: 968% nitrogen, 10.27% sulfur, and the rest is oxygen. What is the empirical formula of penicillin F?…

A: Carbon=53.827%  Sulphur = 10.27%  hydrogen = 6.453%  Nitrogen = 8.969%  oxygen = 100% - 79.519% =…

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.