Calculate the percent composition for the following compounds. Use the example above to help you. You must show all your work for credit; the answers are included to help you.

Q: dentify each compound as Empirical or Molecular. Write your answer on the space  provided.

A: 6) Methyl acetate (C3H6O2) The given compound is molecular formula.       7) Ammonia (NH3) The given…

Q: Use the References to access important values if needed for this question. For the molecular…

A: Here we have to determine the conversion factor to convert moles of PCl3 into number of molecules of…

Q: Calculate the percent composition by mass for CaCO3. Use the molecular weights to two decimal places…

A: Given, The percent composition by mass for CaCO3 is: a) %C = b) %Ca = c) %O =

Q: Never heat the mixture until the distillation flask is dry as this may cause an explosion. O True O…

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Q: Terephthalic acid, used in the production of polyester fibers and films, contains 57.83% carbon,…

A: To determine the molecular formula of terephthalic acid, you can first find the empirical formula…

Q: What is the charge on a chromate ion? A 1+ 1- C 2- D 3-

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Q: Calculate the percentage composition for C2H60. (Enter your answer to four significant figures.)…

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Q: Calculate how many moles of CaCl2•2H2O are present in 1.50 g of CaCl2•2H2O and then calculate how…

A: Initial mass of calcium chloride di-hydrate = 1.50 g Molar mass of calcium chloride di-hydrate =…

Q: 102.2 g NaCl = _______________ mol NaCl

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Q: Perform each of the following calculations.  You must show your work to receive credit and must must…

A: No of atom/molecules = mole × Avogadro number

Q: For the molecular compound phosphorus pentachloride, what would you multiply "moles of PCI5" by to…

A: To determine the multiplying factor to convert the moles of PCl5 to the number of molecules of PCl5.…

Q: What is the percent by mass of nitrogen in NH4CI? (Do not include the %-sign in your answer. Report…

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Q: How many molecules of C8 H18 would you have if you have 2.51 mol? Report your answer with 3…

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Q: 7-9. An organic compound is composed of 40.92 percent carbon, 4.58 percent hydrogen, and 54.50…

A: Empirical formula of a compound can be defined as the simplest whole number ratio of all atoms…

Q: Using the equation below, convert 10.62 grams of water to moles of H2SO4. Please round your answer…

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Q: When a 1.924 g sample of a compound undergoes combustion analysis, 2.801 g CO2 and 1.433 g H2O are…

A: Since the compound contains only C, H and O. Hence assuming the empirical formula of the compound is…

Q: How many moles of NaOH are in 2.2x1025 formula units of NaOH? Round your answer to 1 decimal place.

A: Given data,  Formula units of NaOH = 2.2 × 1025  Formula units of 1 mole NaOH = 6.022 × 1023

Q: Enter your answer in the provided box. 12 The atomic masses of the two stable isotopes of carbon, 13…

A: Given,  12C6 isotope has 98.90 %  molar mass = 12 amu And 13C6 isotope has 1.100 %  Molar mass =…

Q: How many molecules are in the sample? 87 g CCl4 Express your answer using two significant figures.

A: Number of moles can be calculated as follows: No. of moles = MassMolar massNo. of moles = 87g153.82…

Q: How many moles are in 105 g of K? Use 2 decimal places in your molar mass for the calculation.…

A: Mass of K (potassium) = 105 g  And as molar mass of K (potassium) = 39.09 gmol-1   Use formula for…

Q: T Questions 1-2: KC103 2 KCI+ 02 1. How many grams of O2 are produced from the decomposition of 8.56…

A: There are four questions are given but I'm solving first two questions according to the guidelines…

Q: FOLLOW-UP QUESTIONS (Show all your work) 1. A hydrated substance was found to have the following…

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Q: Using the equation below,  convert 17.19 grams of water to moles of H2SO4.  Please round your answer…

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Q: Suppose that a compound containing copper and chlorine contains 0.01139 moles of copper and 0.03813…

A: According to the question:  moles of copper in compound = 0.01139 moles moles of chlorine in…

Q: What is the mass percent of oxalate if a 142.9 g sample was found to have of oxalate in the chemical…

A: Given: Mass of oxalate in the sample = 88.02 g Mass of the sample= 142.9 g Required: Mass percent of…

Q: A compound has the following percent compositions. Find the empirical formula of this compound.…

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Q: How many molecules are in each sample? 69.0 g N2 (Express your answer using three significant…

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

Q: Give the percent composition of all elements present in the following compounds. Follow this format…

A: The percent composition is calculated by the formula, % composition=Molar mass of elementMolar mass…

Q: How many molecules are in the sample? 17 g C6 H12O6

A: No. Of molecules= (given mass/molecular mass) * Avogadro's no. Avogadro's no. is 6.023*1023

Q: Be sure to answer all parts. How many H atoms are in 61.9 g of isopropanol (rubbing alcohol), C,HgO?…

A: The mass of isopropanol is = 61.9 g The molar mass of isopropanol is = 60.1 g/mol The number of the…

Q: Oxygen gas is a diatomic molecule. How many mole are contained in 4.23×10exp14 molecules of oxygen…

A: This problem can be solved by knowing that one mole of any substance contains6.022×1023 particles.

Q: How many formula units are present in 5 moles of Al2S3 ? [?] x 10 fun. Al₂S3 Make sure your answer…

A: Formula units are nothing but the number of atoms present in the particular moles of a compound. Use…

Q: How many molecules are there in 32.5g of chlorine molecule (Ch) (RMM of Cla= 71, Avogadro number %3D

A: Since we know that one mole of any substance contains 6.022 × 1023 molecule  And  Number of mole =…

Q: Step 1a: When percentages are given, assume that the total mass is 100 grams to determine the mass…

A: Given : % N in sample of unknown compound = 66.6%   To find : Moles of N in sample of unknown…

Q: QUESTION 4 A 1.50-g sample of NazSxO6 contains 6.68 x1021 sodium ions. Determine the value of x.…

A: One molecule of Na2SxO6 contains 2 sodium ions. Number of Na2SxO6 molecules having 6.68 x 1021…

Q: B. Accutane is found to contain 79.95% C and 9.40% H with the remainder being oxygen. Its molar mass…

A: elements    percentage    atomic mass    moles=%/at. mass    simplest molar ratio        C…

Q: Calculate the number of moles of each elements/ compound contain. 1. 3.12x1020 molecules of NH3 2.…

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Q: Which of the following has the highest number of molecules? O 1.0 g of F2 O 1.0 g O2 1.0 g of Cl2 O…

A: We are given that each of compound is 1.0 g, we need to find the compound with maximum number of…

Q: More commonly, the empirical or simplest formula of a compound is determined by finding the masses…

A: Answer:Number of moles of a substance is always equal to the ratio of its mass and molar mass,…

Q: From the given molar mass and empirical formula of several compounds, find the molecular formula of…

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Q: An analytical chemist measures the amount of Elements E, and E₂ in four samples of an unknown…

A: Since the unknown substance, X contains elements E1 and E2, it can be either a compound of E1 and…

Q: Using the equation below, convert 14.17 grams of water to moles of H2SO4. Please round your answer…

A: Here we are required to convert gram of water into moles of sulphuric acid

Q: How many formula units are in 0.761 g of iron(III) nitrate?   A. 1.89 x 1021 f.u.   B. 3.13 x…

A: Interpretation: The amount of formula units are in 0.761 g of iron(III) nitrate is to be calculated.

Q: Part B Rank them according to the amount that would be formed. Rank from largest amount to least…

A: We have to rank the given alkenes.

Q: 6. A compound containing sium and 1.527 g of nitrc

A: Empirical formula represents the simplest reduced whole number ratio of atoms of all the elements…

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.