Which of the following samples contains the fewest sodium atoms?(a) 1 mol sodium oxide (b) 45 g sodium fluoride(c) 50 g sodium chloride (d) 1 mol sodium nitrate

Q: A compound with the empirical formula of CH2  was found to have a molar mass of approximately 84g.…

A: Given, A compound with the empirical formula of CH2  Molar mass of CH2 = 12+2= 14 gram/mol Having…

Q: Citric acid was found to contain 37.51% C, 4.20% H, and 58.29% O by mass. What is the simplest…

A: Given :-  Percent composition of C = 37.51%  Percent composition of H = 4.20%  Percent composition…

Q: The molar mass of a compound (empirical formula C2H4O) is 132.0 g/mole. What is the molecular…

A: The given data contains, Molar mass = 132.0 g/mol.

Q: A compound is composed of only carbon and hydrogen contains 85.7% C and 14.3% H by mass. What is the…

A: Given: The percentage of carbon in the compound = 85.7 % The percentage of hydrogen in the compound…

Q: One of the hydrates of NazCr0, is sodium chromate decahydrate. A 56.6 gram sample of NazCr04 10 H,O…

A:

Q: A chemical compound containing only carbon, hydrogen and oxygen is found t composed of 57.43% C and…

A: Empirical formula:  Simplest mole number ratio of atoms present in a compound is called is called…

Q: Spodumene is processed chemically to convert it to a material having the percent composition 18.79%…

A: The given mass percentage are: Li=18.79 % C=16.25 % O=64.96 % The empirical formula has to be…

Q: Oxalic acid is found to have the following composition: 26.7% C, 71.1 % O, and 2.2 % H.   The…

A: Element % composition Atomic Mass Relative composition = % compositionAtomic mass Simplest ratio…

Q: Example: A phosphorus oxide contains 43.64% P and 56.36% O and its experimentally determined molar…

A: Given compositions--- % P= 43.64 % % O = 56.36%  Molar mass = 283.89 g mol-1 Empirical and molecular…

Q: What is the molar mass of Ba(NO3)2?

A: Molar mass of any compound is given by  Molar mass = sum of Atomic mass of each atom present in the…

Q: Combustion of a 1.505 g sample of thiophene, a carbon–hydrogen–sulfur compound,yields 3.149 g 0.645…

A: Thiophene is composed of carbon, hydrogen, and sulfur. On combustion, it will give carbon dioxide,…

Q: Which of the following has more atoms: 0.302 g ofhydrogen atoms or 14.7 g of chromium atoms?

A: If the number of moles of a substance are more, the number of atoms are also more. Number of moles…

Q: A chloride of silicon contains 79.1 mass % Cl.   (a) What is the empirical formula of the chloride?…

A: Consider weight of compound = 100 gmMole of Cl = 71.9 / 35.453 = 2.23Mass of Si = 100-79.1 = 20.9…

Q: A compound of carbon and hydrogen contains 92.3% C and has a molar mass of 78.1 g/mol. What is its…

A: To determine its molecular formula first empirical formula is needed. Empirical formula of a…

Q: when 47.8g of KClO3 is completely decomposed what is the theoretical yeild in grams of O2?

A: Given,Mass of KClO3 = 47.8 g Moles of KClO3 can be calculated as:

Q: If sorbic acid has an experimental molar mass of 112 g, what is its molecular formula?

A:

Q: If 0.587 g of nickel metal reacts with 1.065 g of chlorine gas, what is the empirical formula of the…

A: Answer :- A] NiCl2 Product formed in the is independent of the moles of reactants present as it…

Q: How many moles of hydrogen are in 3.06 10l g of glycine C,H,NO,?

A: Number of Mole-ratio of given mass of substance to the molar mass of substance is called number of…

Q: A sample of propanol, C3H3O, contains 0.383 mol of the compound. What is the mass of the sample, in…

A:

Q: The compound noradrenaline contains 56.80% C, 6.55% Н, 28.37% О, and 8.28% N by mass. What is the…

A: To solve thia problem we have consider that mass of given compound is 100 g  Then according to the…

Q: In 1871, Mendeleev predicted the undiscovered element ekasilicon. In 1886, the element was…

A:

Q: What minimum mass of H2SO4 would you need? Express your answer in grams.

A:

Q: A sample of histamine having a mass of 385mg is composed of 208mg of carbon, 31mg of hydrogen, and…

A: Molecular formula: In a molecular formula we describe the number of atoms of all the elements…

Q: A compound is 75.46% carbon, 4,43% hydrogen, and 20.10% ocygen by mass. It has a molecular masa of…

A: Given Element %  of  carbon(C) = 75.46 % = 75.46 g Element %  of  hydrogen(H) = 4.43 % = 4.43 g…

Q: What is the molar mass for each of the following compounds? 1. Li,SO, Cu(CIO,),

A:

Q: A compound of carbon and hydrogen has the composition of 92.25% carbon and 7.75% hydrogen by mass.…

A:

Q: Adipic acid is an organic compound composed of 49.314 C. 580 g/mol. dinic acid is an organic…

A: Adipic acid is an organic compound composed of 49.314 C. 43.79% O, and the rest hydrogen. If the…

Q: 3. A compound is composed of 52.14% Carbon, 13.13% Hydrogen and 34.73 Oxygen by mass a. What is the…

A: When two or more atoms combine with each other, they will form a molecule and those molecules have a…

Q: The element X forms the chloride containing 75.0% Cl, by mass. What is element X?

A:

Q: A compound was decomposed and determined to be 51.27 % C, 7.75% H and 40.98 %O  by mass.  What is…

A: Given  C%   = 51.27 % H     = 7.75 %  O     = 40.98 %  Subscript of Carbon in Empirical Formula   =…

Q: When Oxygen is bubbled through a solution of sodium polysulfide, photographic hypo is produced. If…

A: answer is option a

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: A chloride of silicon contains 79.1 mass % Cl. (a) What is the empirical formula of the chloride?…

A:

Q: A compound with an empirical formula of C4H4O and a molar mass of 136 grams per mole. What is the…

A: Given, Compound With an empirical formula = C4H4O  molar mass of the compound = 136 g/mol Molecular…

Q: 1. Calculate the formula weights of the following substances: (a) BaCl, (b) KHC,0,

A:

Q: 3. Vitamin C, ascorbic acid, contains 40.92% C, 4.58% H, and 54.50% O by mass. What is the empirical…

A:

Q: One of the hydrates of MnSO4 is manganese(II) sulfate dihydrate . A 69.7 gram sample of MnSO4  2…

A:

Q: what is the mass(in grams). 5.05니 x023 of Of Carbon diox id e?

A: According to the question,  We need to calculate the mass of 5.054*1023 molecule of carbon dioxide.…

Q: Ethylenediaminetetraacetic acid (EDTA) is a chemical that binds metals such as lead, to treat lead…

A: EDTA is Ethylenediaminetetraacetic acid whose chemical formula is (C10H16N2O8)  Number of carbon…

Q: What mass of compound is present in 5.80 moles of each of the following compounds? H. ON a. Mass b.…

A:

Q: A compound that contains only carbon, hydrogen, and sulfur is 30.8 % S and 57.6 % C by mass. What is…

A: The given data contains, Sulphur = 30.8 % Carbon = 57.6 % The % of Hydrogen =100%-(30.8+57.6)%= 11.6…

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: A compound has a composition of 94.7% of carbon and 5.3% of hydrogen by mass. What is the empirical…

A: The empiric formula of a chemical compound is the shortest positive integer ratio of atoms found in…

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: One of the hydrates of CoSO4 is cobalt(II) sulfate hexahydrate . A 71.1 gram sample of CoSO4 6 H2O…

A: Answer

Q: A compound is found to contain 7.522% phosphorus and 92.47 % iodine  by mass. a. What is the…

A: From the mole ratio of the element we can determine the empirical formula . Using empirical formula…

Q: A compound is composed of 27.29% C and 72.71% O by mass. What is its empirical formula?

A: The empirical formula shows the kind and proportions of atoms in a substance in its simplest form.…

Q: A compound is found to contain 83.60% C and 16.40% H. If the compound above  is known to have a…

A: For the determination of Molecular formula of the compound Hydrocarbon, % is devide by atomic mass.…

Q: A 41.54 gram sample of a hydrate of MnSO4 was heated thoroughly in a porcelain crucible, until its…

A: Given:The given sample is MnSO4 .Mass of sample before heating  = 41.54 gMass of sample after…

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.