How many atoms of Na are in 45.0 g of Na2CO3  ( Na2CO3 = 105.99 g/mol) Your answer should be rounded to 3 sig figs and be in scientific notation. (Enter in this format:  1234 = 1.234e3

Q: Fictional, not on PT. I found a family of compounds that contain only A, X and Z elements in…

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Q: How many formula units are there in 31 grams of beryllium iodide BeI2? (MW = 262.82 g/mol)

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Q: How many moles of atoms is in this elemental sample? 1.1×1022 Ag atoms

A: Given, Number of atoms of Ag = 1.1×1022 atoms Moles of Ag atoms = ? Note: Avogadro's number = 6.022…

Q: Information for Parts B, C, and D A compound is 80.0% carbon and 20.0% hydrogen by mass. Assume a…

A: Given, Mass of sample of the compound = 100 g Percentage of of each element in the sample of…

Q: Please provide all the work in detail because I will be using this to study

A: Amount of C = 0.532 g Number of mol of C = given mass / molar mass = 0.532 g / 12.011 g/mol = 0.044…

Q: A lab analysis of an organic compound showed it is made up of 60.00% C, 5.75% H, and 34.25% O. If…

A: Given, C = 60.00 %  H = 5.75 %  O = 34.25 %  Molecular mass = 560.56 g/mol

Q: Example How many molecules of O, are present in 6.25 moles? (why is this a molecule and not an…

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Q: made-up compound: J2(QZ3)2 Determine the number of molecules of J₂(QZ3)2 in 7.2 grams of J₂(QZ3)2…

A: Given -> Weight of J2(QZ3)2 = 7.2 gram  Atomic mass of J = 19.00 g/mole Atomic mass of Q = 35.00…

Q: Please don't provide handwritten solution ....

A: The number of molecules present in a given substance can be related to its number of moles using the…

Q: How many atoms of H does the notation 5 Fe(HOOCCH2COO)3 indicate? Express your answer as an integer.

A: Answer:The letter y used in subscript represents that in one molecule of ABy B is present y times,…

Q: A compound was found to contain 115.49g of Ca, 92.16 g of O, and 5.82 g of H. What is the total mass…

A: mass of Ca = 115.49g mass of O = 92.16 g mass of H =  5.82 g  Molar mass of Ca = 40.078 g/molMolar…

Q: The cullinan diamond was the largest natural diamond ever found (january 25 , 1905 25, 1905). It…

A: Use formulas Mole=mass÷molar mass Total atoms=mole×6×1023 MOLAR mass of diamond= 12g/mol

Q: S. A compound contains 29.41% calcium, 23.53% sulfur, and 47.06% oxygen. What's the empirical…

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Q: Leucine is an amino acid with the formula C,H,NO,. Determine the number of moles of carbon in 60.08…

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Q: a) What is the mass of 2.450 x 10²⁴ atoms of tungsten (# 74)? (Be sure to write your units, chemical…

A: The solution is shown in the image below-

Q: Elemental analysis of a compound with molar mass 214.22 g/mol gives the following mass percent…

A: Given data,Percent of C=72.89%Percent of H=4.71%Percent of O=22.41%Molar mass of…

Q: - Why do we use the "mole" in chemistry. How does it relate to the periodic table? a) What is the…

A: The relationship between mole and mass is as follows:       Mole = Mass Molar mass ⇒Mass =…

Q: which of the samples have the large numbers of molecules H2S04 ? (Atomic mass H = 1, O=16 S= 32) * O…

A: Given data, Atomic mass of H = 1g/mol Atomic mass of O = 16 g/mol Atomic mass of S = 32 g/mol

Q: Calculate the moles of glucose in 1.0253 g of glucose, C6H12O6. Then calculate the moles of each…

A: Given :-  Mass of glucose = 1.0253 g  To calculate :-  Number of moles of glucose and also determine…

Q: A 6.949 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis…

A: Given,mass of unknown organic compound = 6.949 gmass of CO2 = 9.854 gmass of H2O = 6.052 gmolar mass…

Q: What is the mass percent of ethanol (CH3CH₂OH) if 0.0786 moles of ethanol is added to 0.279 kg of…

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Q: Arsenic is a natural semi-metallic chemical that is found all over the world in groundwater.…

A: A question based on mole concept that is to be accomplished.

Q: How many O atoms are in 80.4 grams of Al(NO2)3? (The molar mass is 165.01 g/mol.)

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Q: You are working in a science lab that is analyzing the contents of cow manure. You discover a novel…

A: Empirical formula is the simplest formula of the compound, which is the ratio of subscripts of the…

Q: Please provide all the work in detail because I will be using this to study

A: Amount of Al reacting = 1.551gNumber of mol of Al reacting = given mass / molar mass = 1.551 g /…

Q: Sucrose has the molecular formula C12H22011. If a sucrose sample contains 9.0 x 1024 atoms of…

A: Given, Sucrose has the molecular formula: C12H22O11 A sucrose sample contains, Number of atoms of…

Q: In a universe far, far away, there exists an alien world where they have a different periodic table,…

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Q: How many moles of atoms are in 5.00 g of ¹3C?

A: Mole can be define as the ratio of weight of substance taken divided by molecular weight of that…

Q: What is the molar mass of X5((ZT3)3 in grams per mole? (Assume that the molar mass of X is 60.94…

A: The molar mass of a molecule is the sum of the atomic mass of all the atoms present in the molecule.

Q: What is the mass percent of silicon dioxide (SiO2) if you are able to separate 2.202g out of a…

A: The mass percentage of a compound in a mixture is equal to the ratio of the mass of that compound…

Q: 83 gg CCl4CCl4 Express your answer using two significant figures.   How many molecules are in each…

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Q: the context is "Cosmone is a molecule used by fragrance manufacturers to provide a rich and elegant…

A: The solution is as follows:

Q: The molecular formula mass of CH2O compound is 60.0 amu. What are the subscripts in the actual…

A: The objective of the question is to find the subscripts in the actual molecular formula of the…

Q: a. How many ATOMS of phosphorus are present in 2.41 grams of phosphorus pentachloride? atoms of…

A: -> number of moles are obtained when weight is divided by atomic mass or molar mass . -> 1…

Q: Glycine is an amino acid with the formula C2H5NO2. The numbers above are subscripts actually…

A: Please find your solution below : Amino acids are the organic compounds that serve as building…

Q: Can you provide all the work in detail, as I will be using this to study.

A: Given,Mass of sample = 0.734g.Mass of nitrogen = 0.604g.Mass of hydrogen = 0.734g – 0.604 =…

Q: Fictional, not on PT. I found a family of compounds that contain only A, X and Z elements in…

A: Empirical formula gives the idea about the simplest as well as whole number ratio of individual…

Q: 3. Consider a 100.0 g sample of methanol (CH:OH). Show your work for each of the calculations below…

A: Given the mass of methanol(CH3OH) sample = 100.0 g Molar mass of methanol = 32.04 g/mol  Moles of…

Q: Find the % mass composition of calcium nitrate Ca(NO3)2 and water (H2O)

A: Given that - Compounds - Calcium nitrate Ca(NO3)2 and water H2O    % mass composition is the…

Q: A74.12 g sample of a hydrocarbon (CH) has a mass of carbon that is equal to 62.90 g. Given this…

A: To find out the empirical formula, first we need to find out the moles of C and H. Round off that…

Q: How many moles of atoms are in each elemental sample?

A: Given values are, No. Of atoms of Pb = 3.8×1024  atoms Standard value: Avogadro's number= 6.022×1023…

Q: A compound is 25.0% carbon, 8.4% hydrogen and 66.6% sulfur by mass. Put symbols in order of CHS.…

A: Given Data:% of Carbon = 25.0 %% of Hydrogen =8.4 %% of Sulfur = 66.6 %To determine:Empirical…

Q: 4.61×1021 CaCa atoms Express your answer using three significant figures.    How many moles of atoms…

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Q: Determine the number of atoms of C in 24.8 grams of CH1206- atoms 1 3 4 C 7 9. +/- x 100 2. 5

A: Given : Mass of carbon = 24.8 g Compound = C6H12O6 To Find : Number of atoms Solution : Number of…

Q: Now that we have put coefficients of 3 in front of CaSO4 and CaCl2, what coefficient should go in…

A: 3CaSO4 +  ? AlCl3 --->  3CaCl2 + Al2 (SO4)3Here we have to determine the coefficient of AlCl3…

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.