Calculate the percent oxygen by mass in disilicon trioxide(Si2O3) to 3 significant figures.

Q: A fertilizer is advertised as containing 14.0% nitrogen(by mass). How much nitrogen is there in…

A:

Q: The percent by mass of cobalt(III) in Co(CN)3 is

A: Given the complex,Co(CN)3 The mass of the complex=136.9853 g/mol The mass of Co(III)=58.9332 g/mol.…

Q: To three significant digits, what is the mass percentage of iron in the compound Fe2O3?

A: Molar mass of Fe = 55.85g/mol Molar mass of O = 16g/mol Molar mass of Fe₂O₃ = 2(55.85) + 3(16) =…

Q: 2- Calculate the empirical fomula of the compound composed of 38.67 % C, 16.22 % H, and 45.11 %N by…

A: To calculate the empirical formula we have to calculate the number of mole of each elements in the…

Q: Calculate the mass in grams for 4 molecules N2O5

A: The mass of 4 molecules of dinitrogen pentoxide is calculated as,

Q: Calculate the percent composition by mass of cach element in AIKOH),. Use at least three significant…

A: Following are the atomic masses of the atoms in Al(OH)3: atomic mass:Al = 27 g/molO = 16 g/molH = 1…

Q: Determin the number of moles of compound within 0.25 g of glycine, CH;NO2

A: Given :- mass of glycine = 0.25 g  To calculate :- no. of moles of glycine

Q: 4. Calculate the number of moles of CuSO4•5H2O in 100 g of the solid.

A: Given details, Mass (m) = 100g Atomic mass of CuSO4.5H2O = 249.68 g/mol To calculate the number of…

Q: 1. Calculate the mass of 0.1890 mol CH

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

Q: 2163 T(K) 1557 Mg₂SiO4 20 40 60 Mole % SiO₂ 80 1873 1543 SIO₂

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Q: 3- calculate the number of (O) atom in 1.5 g of glucose (C6H1206).

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

Q: wnat is the empiracle formula og Compound that is 62.07. C, 10.47 and 27.5%. 0 by mass ?

A: C = 62.0 % H = 10.4 %  O = 27.5 %

Q: What is the mass of 0.0157 eq carbonic acid?

A: A question to find the mass of Carbonic acid in the given equivalence.

Q: A 10 gram sample of NaCl will have the same percent composition (percent by mass) of Na and Cl than…

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Q: 2. Determine the percent by mass of all elements in the compound C,H,CI.

A: Given compound = C4H9Cl standard molar masses C = 12 g/mol H = 1 g/mol Cl = 35.45 g/mol

Q: 2.845 multiplied by 10E12 potassium ions equals how many moles in potassium ions

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Q: How many molecules are in 3.1x10^-3 g of C9H8O4?

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Q: How many moles of tetracycline (C₂₂H₂₄N₂O₈) are in 92.1 grams?

A: Before going to find out moles of tetracycline, We first find out molecular weight of C22H24N2O8 ,…

Q: 8. Which of thollowing could NOT be an empirical formula? CUSO4 5H2O O A2O3 O C2H6 O H;PO4

A: Empirical formula: Empirical formula is defined as the  simplest, positive, whole number ratio of…

Q: 3. Calculate the percentage by mass of oxygen in the following compounds: (#3.25, p.157) a.…

A: formula for percentage by mass:

Q: This is the chemical formula for methyl acetate: (CH3),CO2. Calculate the mass percent of carbon in…

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Q: 2. H3PO4, Phosphoric acid, is used in detergents, fert izers, toothpastes and flavoring in…

A: Answer to the following question can be given as -

Q: O Naphthalene (128.164 g/mol) H. H. H. O Acetic acid (59.04 g/mol) H-C-C HICI

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Q: A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent…

A: A. Given that : The given hydrocarbon is C10H22. We have to calculate the % composition (by mass) of…

Q: 5.9 mol N2O5

A:

Q: How many H atoms are in 0.100 mole C13H18O2

A: The chemical formula of the molecule is C13H18O2  Given the moles of C13H18O2 = 0.100 mol

Q: The formula for molybdenum(IV) hydroxide is Mo(OH)4. What is the percent by mass of oxygen in…

A: percent by mass of O = (mass of O/mass of Mo(OH)4 ) × 100%

Q: How many moles of Fe2O3 are in 239 g of the compound?

A: Given: Mass of Fe2O3 = 239.0 g Molar mass of Fe2O3 = 159.69 g/mol

Q: What is the percent by mass of carbon in acetone, C3H,O? А. 1.60 % В. 30.0 % С. 62.0 % D. 20.7 % Е.…

A: Standard data: The molar mass of carbon atom = 12.01 g/mol The molar mass of oxygen atom = 15.999…

Q: f 37.0 g of MgSO4⋅7H2O is thoroughly heated, what mass of anhydrous magnesium sulfate will remain?…

A: On strong heating, water molecules get removed and turn hydrated salt into anhydrous salt.The…

Q: How many moles are, in 7.99 x 10 I2 molecules .

A:

Q: How many moles are equal to 2.40 x 1023 formula units of sodium chloride? Round to two decimal…

A: Since, Avogadro number (6.022 × 1023) of formula units are equal to 1 mole of any substance…

Q: Bromoform is 94.85% bromine, 0.40% hydrogen, and 4.75% carbon by mass. Determine its empirical…

A: The given data contains,   bromine=94.85%   hydrogen=0.40%   carbon=4.75%

Q: This is the chemical formula for hexanal: CH3(CH2),CHO. Calculate the mass percent of carbon in…

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Q: How many moles of Fe2O3 are in 163 g of the compound?

A: Given - mass of Fe2O3 = 163 g To find - moles of Fe2O3 Formula -

Q: Calculate the % composition (by mass) of carbon in. C2F3C!3? Report answer to two decimal places and…

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Q: How many oxygen atoms are in 23 molecules of finite oven tetroxide, N2O4

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Q: 1 CH; H CH3 Molecular formula: H,C-C-C-Ċ-CH, Empirical Formula:

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Q: Determine the percent ammonia, NH3, in Co(NH³) 6C1, to four significant figures.

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Q: 3. Consider the equ: Moles: C8H14 Masses: C8H14

A: First convert mass into mole by dividing molarity mass of H2O  Then use mole-mole relationship…

Q: Calculate the percentage composition for KCLO4 ro 3 significant figures

A: The percentage composition of an atom in a compound can be found by the following equation.  % of…

Q: How many millimoles are in 3.93 x 1025 bismuth(V) hydrogen carbonate formula units?

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Q: How could you calculate the Avogadro’s number [NA] for an organic compound if you know the following…

A: Avogadro's number [NA] refers to the number of constituent particle such as atoms, molecules, ions…

Q: What is the percent composition by mass (to one decimal place) of copper in 80.0 kg of copper (2)…

A: Molar mass of Copper(II) pho sphate = 380.58 g/mol This implies; 380.58 g of Cu3(PO4)2 contains…

Q: Example:- Calculate the number of grams in one mole of CaSO4.7H2O (calculate gram molecular or…

A: The gram molecular weight gives the data about the number of atoms or molecules present in that…

Q: What is the mass percent of carbon in the following compound? C4H10 O4

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Q: Calculate the number of moles of NaOH in 26.00g of NaOH and also calculate the mass in grams of 0,02…

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Q: How many moles are represented by 11.5 liters of C,H,OH?

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Q: ● Which of the following 100.0-g samples contains the highest percent oxygen by mass? H2O N20 C3H6O2…

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Q: The percent by mass of silver in Ag,CO3 is %.

A: Molecular mass of Ag2CO3 = 2*atomic mass of Silver + atomic mass of Carbon + 3*atomic mass of Oxygen…

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.