A compound Y containing carbon, hydrogen and oxygen only have the following composition by mass: C: 40.0% ; H: 6.7% ; O: 53.3% (a) Calculate the empirical formula of the compound. (Relative atomic masses: H =1.0, C = 12.0, O = 16.0) (b) Given that the relative molecular mass of compound Y is 180. Find its molecular formula.

Q: What is the mass (in ka) of 6.89 x 1025 molecules of CO2? The moiar mass of co2 is 44.01gimoi. :-

A: The mass of CO2 is calculated by finding moles of CO2.

Q: Calculate (to the nearest 0.1 u) the formula mass of these compounds. (a) boron trifluoride, BF3…

A: The compounds given are BF3, SrSO4 and CCl4.

Q: A compound is decomposed in the laboratory and produces 1.40 g N and 0.20 g H. What is the empirical…

A: The number of moles of N and H present in the compound can be determined as follows: nN = WNMNnN =…

Q: (a) The number of atoms in 6.95 moles of potassium.

A:

Q: Glycine, an amino acid used by organisms to make proteins,is represented by the following molecular…

A: Glycine is the simplest amino acid present. It is made up of an amine group and one carboxylic group…

Q: What is the molecular formula of each compound? (Type your answer using the format C6H12O6 for…

A:

Q: What would be the mass, in grams, of an NO2 sample in which 100 billion (1.00 X 10 11) moleculesare…

A: The number of molecules of NO2 sample is 1.00×1011.   The formula to calculate the number of…

Q: A sample of glucose, C6H12O6, contains 1.250 x1021 carbonatoms. (a) How many atoms of hydrogen does…

A: a).

Q: (b) The number of moles of potassium that contains 8.93 × 104 atoms. x 10 mol

A: Given  Atoms of potassium = 8.93 x 1025  To find = number of moles of potassium

Q: An element consists of 4.35% of an isotope with mass 49.946 u, 83.79% of an isotope with mass…

A: Average atomic mass: The average atomic mass of an element is the sum of the masses of its isotopes,…

Q: (a) What is a hydrocarbon? (b) Butane is the alkane with a chain of four carbon atoms. Write a…

A: (a)Hydrocarbons are the organic compounds contain carbon and hydrogen atoms. Hydrocarbons are…

Q: 3: Find the amount of the indicated element (in moles) in: (a) 8.75 g of B,O3. (b) 167.2 mg of…

A: One mole of any compound = it's molecular weight . From here we can calculate the moles. Of that…

Q: What is the total mass of hydrogen in each of the molecules?(a) CH4(b) CHCl3(c) C12H10O6(d)…

A: Mass of an atom of hydrogen is 1 g/mol.

Q: Give the empirical formula of each of the following compounds if a sample contains the following…

A:

Q: A sample of hydrocarbon on complete combustion gave 1.32 g of carbon dioxide and 0.72 g of water.…

A: To calculate the emperical formula, the moles of carbon dioxide and water formed can be calculated.

Q: A 2.664 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis…

A: Consider the given information is as follows;Mass of the organic compound sample = 2.664 gMass of  =…

Q: Write the correct formula of copper (II) sulfate pentahydrate.

A: We'll answer first question only since the question to be answered is not mentioned. Please resubmit…

Q: (a) Atoms are very small compared to objects on the macroscopic scale. The radius of a nickel atom…

A:

Q: What is the mass of 5.34 x 10^23 molecules of sodium hydrogen carbonate. So far I have Na:22.99 +…

A: Given,the molecules of sodium hydrogen carbonate = 5.34 x 1023 molecules.Atomic mass of Na = 22.99…

Q: 11) What is the mass of 2.25 moles of the Zn(CIO3)2 molecule?

A: Number of moles = Mass / molar mass

Q: What is the molecular formula of each compound?(a) Empirical formula CH (μ=78.11 g/mol)(b)…

A: a) Empirical formula = CH     Given mass = 78.11g/mol     Empirical formula mass = 12 + 1=13g/mol…

Q: S+ HNO3 → H2SO4+ NO2 + H2O. Balance this chemical equation, finding the smallest possible integer…

A: The given unbalanced chemical reaction is - S + HNO3 ---> H2SO4 + NO2 + H2O   Here ,the number of…

Q: If the gasoline reacts completely with excess oxygen (from the air) to form CO2 and H2O, what is the…

A: Given :- mass of gasoline = 62.0 kg  To be calculated :-  Mass of CO2  Mass of H2O

Q: (d)Using the formula Mn(ClO₄)₄ (MM = 452.74), what is the percent by mass of Cl in the compound?…

A: Number of moles = mass / molar mass  % by mass =( mass of Cl atoms in Mn(ClO4)4 / mass of 1 mol of…

Q: Which compound of calcium is used for swimming pool water and sewage treatment

A: compound of calcium is used for swimming pool water and sewage treatment is (B) Calcium…

Q: Combustion analysis of a compound yielded 236.73 g CO2, 48.48 g H2O, 61.86 g NO2, and 86.15 g SO2.…

A:

Q: 1. (a) 5.00g of caffeine is found to contain 2.47g of carbon, 0.26g of hydrogen, 1.44g of nitrogen…

A: Given: The mass of carbon=2.47 g. The mass of hydrogen=0.26 g. The mass of nitrogen=1.44 g. The mass…

Q: An element X has a dibromide with the empirical formula XBr2 and a dichloride with the empirical…

A: Given data contains, Mass of XBr2 is 1.500g. Mass of XCl2 is 0.890g. (a) The given chemical equation…

Q: An antacid tablet weighing 0.928 g contained calcium carbonate as the active ingredient, in addition…

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

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.