A compound has the composition of 26.28% Carbon, 5.15% Hydrogen, 10.22% Nitrogen, and 58.35% Oxygen, by mass. Determine its empirical formula. (A) C3H¬NO5 (B) C3H5NO3 (C) C5H5NO3 (D) C,H¬NO5

Q: The empirical formula of a compound is C2H5O. Its molecular mass is 135.112. What is its molecular…

A: Molecular mass = n × Empirical formula mass

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

A:

Q: One of the hydrates of Na2CO3 is sodium carbonate decahydrate A 55.6 gram sample of Na2CO3  10 H2O…

A: b b

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: What is the mass percentage of sulfur in butyl mercaptan (C,H10S

A: Given: The compound is butyl mercaptan i.e. C4H10S. Assuming 1 mole of C4H10S.

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: A compound of carbon and hydrogen consists of94.34% C and 5.66% H, by mass. The molecular massof the…

A: Calculate the mass of C in the compound. Mass of C = 94.34100(178)                  =168 g Calculate…

Q: A compound consisting of carbon and hydrogen is 92.3% C. If the molar mass of the compound is 156.2…

A: Given percentage of carbon = 92.3 %  Percentage of hydrogen = 100-92.3 = 7.7 %  Molar mass of carbon…

Q: What is the mass percent of iron in iron(II) oxalate, FeC2O4?

A: From the molecular formula we can get the molar mass from there we can get the weight of the…

Q: Calculate the mass percent composi - tion of oxyaen in AizCS04)s, in Šignificant figures.

A:

Q: 3.124 What mole ratio of molecular chlorine (Cl2) to molecularoxygen (O2) would result from the…

A: The mole ratio of the reaction has to be given,

Q: The molar mass of caffeine is 194.19 g. Is the molecularformula of caffeine C4H5N2O or C8H10N4O2?

A: Caffeine is a natural stimulant most commonly found in tea, coffee and cacao plants. It works by…

Q: A compound with an empirical formula of C2H8N and a molar mass of 46 grams per mole. What is the…

A: Given that : The empirical formula of the compound = C2H8N The molar mass of the compound = 46 g/mol…

Q: What is the molecular mass of CH¿I? amu

A: Molecular mass is defined as the is the mass of a given molecule. The unit of molecular mass is amu…

Q: When iridium-192 is used to treat cancer, a small cylindrical piece of 192Ir, a 0.6 mm in diameter…

A: Given,

Q: Which of the following would NOT be an empirical formula? O C2H6 O Al203 O H3PO4 O H20

A:

Q: In a certain unknown compound composed only of C and H. It is 89.94% C and 10.06% H and the molar…

A: Mass percent of carbon and hydrogen is given as 89.94 % and 10.06% respectively. Mass percent of an…

Q: 5. The empirical formula of a compound is CH, If the molar mass of this compound is about 13, what…

A: Given: The empirical formula of compound=CH The empirical formula mass = 12 x 1 + 1 x 1…

Q: Nitrogen and hydrogen combine at a high temperature, in the presence of a catalyst, to produce…

A:

Q: 3N22SO4 # of molecules: # of elements:

A: The name of Given molecule is sodium sulphate. So the molecular formula is Na2SO4 . Therefore number…

Q: A new organic material is to be examined by combustion analysis. Burning 0.09303 g of this sample in…

A: The sample contains the percentage of, C = 40.63 % H = 5.08 % O = 54•28%

Q: Which is the correct mass percentage of hydrogen in acetamide, C₂H₅NO?

A:

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

A: answer is option a

Q: One of the first chemical WMDs, researchers initially produced VX nerve agent for retail sale in the…

A: we need to determine the empirical formula of the nerve agent

Q: 2. How many grams of aspirin (C,H3O4) are present in 7.95 102 molecules of C,H;O4. The answer is

A: Molar mass of aspirin = 180.16 g/mol  It means 1 mol of aspirin has= 180.16 g  1 mol of any compound…

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

A:

Q: Calculate the following quantities:  a. mass, in grams, of 0.105 mol sucrose (C₁₂H₂₂O₁₁) b. moles of…

A: a. mass, in grams, of 0.105 mol sucrose (C₁₂H₂₂O₁₁) Given;

Q: When 1.5173 g of an organic iron compound containingFe, C, H, and O was burned in O₂, 2.838 g of CO₂…

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

Q: Taking 28,6 g of Na2CO3.xH2O, it is heated in a burner flame. After the heating process, the mass of…

A: The reaction when Na2CO3.xH2O is heated is as follows: Na2CO3.xH2O →Na2CO3+xH2O

Q: 2Ca3(PO4)2+ 6SIO2 + 10C → 6CaSiO3 + P4+ Starting with 100g of Ca3(PO4)2 and assuming excess SiO2 and…

A: 1. Given balanced equation is                                  2 Ca3(PO4)2   +     6 SiO2    +  10…

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

A:

Q: 3) If 28.9g of Lithium Nitride react with excess Magnesium Carbonate, how many MOLS of Magnesium…

A:

Q: Calculate the percentage by mass of the indicated element in the following compounds: carbon in…

A: A chemical compound consists of two or more different elements which are bonded with each other…

Q: How many moles of hydrogen are in 3.06 x 10^-3g of glycine, C2H5NO2?

A: The concentration of any substance can be expressed in different ways such as molality, molarity,…

Q: A Group 2 metal with an electron configuration of [Ne]3s2 combines with fluorine (F2) to produce a…

A:

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: A substance has the molecular formula C6H12O2. What is its empirical formula?

A: A substance has the molecular formula C6H12O2. The empirical formula has to be given below.

Q: 2. Determine the empirical formula of a compound having the following percentage composition: 26.53%…

A:

Q: :The empirical formula of P401ois

A: First question is graded. I will solve second question for you. Empirical formula refers to the…

Q: What is the mass percent of carbon in the following compound? C5H9O2 Enter your answer as a…

A:

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

A: Answer

Q: Gallium arsenide is one of the newer materials used to make semiconductor chips for use in…

A: Empirical formula The empirical formula is the molecular formula of the compound that represents the…

Q: B. What is empirical formula of a compound 32.65% S, 65.3% O and 2.04% H?

A: Convert the percentage to gram, 32.65%  = 32.65g of S. 65.3% = 65.3g of O. 2.04%=2.04 g of H

Q: 12. When 0.25 g of Na combines with elemental oxygen under certain conditions, it forms 0.42 grams…

A:

Q: Mesitylene, a hydrocarbon found in crude oil, has an empirical formula of C3H4 and an experimentally…

A: The formula weight of the empirical formula is: C3H4 = 3×(Atomic mass of C) + 4×(Atomic mass of H) =…

Q: If 0.525 g of Fe2O3.xH2O are heated and 0.408 g of Fe2O3 are obtained, what is the value of x?

A: Weight lose can be calculated as,Heating will remove the water of hydration so the difference in…

Q: Benzoquinone, a chemical used in the dye industry and in photography, is an organic compound…

A:

Q: One of the hydrates of MgI2 is magnesium iodide octahydrate .A 89.9 gram sample of MgI2  8 H2O was…

A: Hydrated salts have water within their crystals when the crystals are formed from water.Anhydrous…

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.