A white oxide of tungsten is 79.2976% tungsten by mass. A blue tungsten oxide also contains exclusively tungsten and oxygen, but it is 80.8473% tungsten by mass. Determine the empirical formulas of white tungsten oxide and blue tungsten oxide.

Q: Determine the exact number of H atoms in the empirical formula of the compound composed of…

A: Calculate the emprical formulaC⇒64.817768 %H⇒13.597446%O⇒21.585325%C=64.81g  x112.0xmolesg=5.39…

Q: An organic compound consists of carbon, hydrogen and nitrogen elements. Table Q6 show the…

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Q: A 60.00-g sample of a dry-cleaning fluid was analyzed and found to contain 10.80 g carbon, 1.36 g…

A: Given that in the compound sample, total mass = 60.00 g Carbon (C) =10.80 g, Hydrogen (H)= 1.36 g…

Q: A compound is 47.35% carbon by mass, 10.60% hydrogen by mass and 42.05% oxygen by mass. What is the…

A: Calculating empirical formula.

Q: A brass alloy contains 78.9% copper, Cu, by mass with the remainder of the alloy being zinc, Zn.…

A: We have to predict the moles of Zn and atoms of Zn.

Q: A laboratory analysis of an unknown compound containing only C, H and O contains:…

A: Consider the given information is as follows; Percentage of Carbon = 64.816% Percentage of Hydrogen…

Q: A materials engineer has filed for a patent for a new alloy to be used in golf club heads. The…

A: The minimum composition of elements is as follows: Mn=25%Al=6.3%C=0.65%Cr=5.5% The maximum…

Q: In a 6.43E1 g sample of NaHCO, how many grams of sodium are present? Use two decimal places in…

A: Mass of NaHCO3 = 6.43E1 = 64.3 g

Q: Vanadium forms four different oxides in which the percent by mass of vanadium is, respectively, (a)…

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

Q: An Organic compound contains 59.00% by mass C, 7.15% by mass H, 7.65% by mass N, and 26.20% by mass…

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Q: How many grams of CH3CO2C5H11 must be weighed out to provide 3.22 x 1023 atoms of H? When you input…

A: Mole in terms of particles : 1 mol = 6.022 x1023 particles  where particles =…

Q: Vitamin C (ascorbic acid) contains 40.92 % C, 4.58 % H, and 54.50 % O, by mass. The experimentally…

A: Given :-  Percent by mass of C = 40.92%  Percent by mass of H = 4.58 %  Percent by mass of O = 54.50…

Q: A 10.724-g sample of an oxide of titanium was found to contain 7.143 g titanium, and the rest,…

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Q: 8,47x102 calculate the mass ; ingram of 8,47x1022 atoms of coppER

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Q: has a molecular formula of C12H2403. What is the empirical formula of d?

A: Answer:  Molecular formula : the actual  whole number of elements in that compound.   Molecular…

Q: A sample of a “suboxide” of cesium gives up 1.6907% of its mass as gaseous oxygen when gently…

A:

Q: What is the percent by mass of chromium (atomic mass = 52.00 g/mol) in Cr2S3 (mm = 200.20 g/mol)?…

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Q: Aspirin is the world’s most-often used medication. The chemical analysisof aspirin indicates that…

A: Given : The mass percentage of carbon in aspirin is 60% The mass percentage of hydrogen in aspirin…

Q: Zinc Oxide decomposes into zinc and oxygen. If 52.1 g of zinc oxide decomposes to form 41.8 g of…

A: Given,52.1 g of zinc oxide, 41.8 g of zinc.The balanced chemical reaction of decomposition of zinc…

Q: A compound is made by carbon, hydrogena and nitrogen and 1 g of this compound contains 91.5 mg of…

A: To write the molecular formula of the compound, the number of moles of each element should be…

Q: What is the mass of 1.11 x 1021 formula units of KBr?

A: 1 mole = 6.022x 1023 molecules or atoms  mole (n) = Mass / molar mass   Mass = mole x molar mass

Q: Vanadium forms four different oxides in which the percent by mass of vanadium is, respectively, (a)…

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Q: If 2.00 grams of Epsom salts are allowed to dehydrate in a warm oven overnight, the mass of the…

A: Mass percent of water in Epsom salt = 100 x Mass of water/Mass of Epsom salt Mass of Epsom salt =…

Q: Barium and nitrogen form two binary compounds containing 90.745% and 93.634% barium, respectively.…

A: The formula of the compound in which the elements are present in the simplest whole number ratio is…

Q: A laboratory analysis of an unknown sample yields 73.13% carbon, 7.38% hydrogen, and 19.49% oxygen.…

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Q: Write the empirical formula corresponding to aspirin, C₉H₈O₄.

A: Empirical formula  Smallest whole number ratio that exists between a compound's constituent…

Q: 1.651 g of Silver is combined with 0.1224 g of oxygen. Find the empirical formula.

A: moles of silver combining = mass / atomic mass atomic mass of Ag = 108 g/mol Hence moles of Silver =…

Q: Calculate the formula mass of magnesium iodite, Mg(I0,),, in atomic mass units (amu or u). formula…

A: The sum of all mass of all atoms in the empirical formula of the compound is known as Formula mass…

Q: The compound adrenaline contains 59.00% C, 7.15% H, 26.20% O, and 7.65% N by mass. What is the…

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Q: Determine the empirical formula of a compound found to contain 26.52% chromium, 24.53% sulfur, and…

A: Given, Chromium =26.52% Sulphur=24.53% Oxygen=(100-26.52-24.53)%=48.95% Let weight of compound be…

Q: A 0.500 g sample of tin foil reacted with oxygen to give 0.635 g of product. (a) What is the…

A:

Q: 4. A student obtains the following data. 25.2246 g mass of clean, dry and empty crucible 25.3372 g…

A: Magnesium ribbon when burnt in air undergoes a chemical change and yields oxide of Magnesium. The…

Q: Which of the following samples of matter would have the largest mass (grams)? Highlight the letter…

A: 1 mole = 6.02* 1023 molecules  At STP 1 mole of gas = 22.4 Lt  Mass = n . Molar mass where n = no.…

Q: Hydrogen phosphide can be decomposed to give phosphorous and hydrogen in a mass ratio of 10.32:1.00.…

A: Answer:- This question is answered by using the simple concept of empirical formula using the mass…

Q: A 43.0 g sample of hydrated cobalt (II) sulfite is heated resulting in anhydrous cobalt (II) sulfite…

A: We have given that   A 43.0 g sample of hydrated cobalt (II) sulfite is heated resulting in…

Q: What is the empirical formula of a molecule containing four sulfur atoms and four fluorine atoms?

A: Note: Since you have posted multiple independent questions in the same request, we will solve the…

Q: The empirical formula for C6H13 is-

A: an empirical formula is the chemical formula of a compound that gives the proportions of elements…

Q: A 15.267 g sample of a sulfide gold was found to contain 12.272 g gold, and  the remainder, sulfur.…

A: The molar mass for gold is 196.967 g/mol and the molar mass for sulfur is 32.065 g/mol. The mass of…

Q: Bituminous coal is a type of coal that is composed of carbon with small amounts of hydrogen, oxygen,…

A: Chemical formula of Bituminous coal is C137H97O9NS Molar mass of Bituminous coal…

Q: You are given 1.0g samples of Iron (Fe), Silicon (Si), and Lithium (Li). Which of the three samples…

A: Applying mole concept and avogadro concept.

Q: Two binary oxides of the element manganese contain, respectively, 30.40% and 36.81% oxygen by mass.…

A: Empirical formula refers to the formula of a compound in which the elements are present in the…

Q: The molecular formula of hexakis(methylthio)benzene is C12H18S6. What is the percentage (by mass) of…

A: We have to calculate the % by mass of C in hexakis(methylthio)benzene .

Q: Chromium metal is obtained by heating chromium(111) oxide with carbon.Calculate the mass percentage…

A: By the help of stoichiometric coefficient we can find the amount of unknown substance by the help of…

Q: formula of the hydrate

A: When a hydrous salt is heated, it loses the water of crystallization. Water of crystallization =…

Q: One form of asbestos called chrysotile is considered to be a human carcinogen. Mass analysis shows…

A: Given: 26.3% Mg, 20.2% Si, 1.45% H   Let mass of compound be 100 g. then it contain 26.3 g of Mg,…

Q: An engineer has filed for a patent for a brand new allot to be used in golf club heads. The…

A:

Q: How many grams are in 2.0 x 1044 atoms of C? Enter your answer rounded to four sig figs, without…

A: 1 mole of any substance contains 6.022×1023 1 mole of any substance is the molar masa of that…

Q: the mineral hausmannite is a compound of Mn and O. If hausmannite is 72% Mn by mass, what is the…

A: Given, 72% Mn by mass

Q: From this data, what empirical formula of magnesium oxide.

A: Mass of oxygen added = 35.1556 - 35.0079 g Mass of Oxygen = 0.1477 g Moles of oxygen = mass / molar…

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.