9.An unknown compound has 68.4% of the metal Cr and 31.6% of O atoms. What is its empirical formula?Necessary answer. Unique option. A) Cr2O3 B) Cr4O6 C) CrO2 D) Cr3O6 D) None of the above.

Q: I Review I Constants I Periodic Ta Benadryl is an over-the-counter drug used to treat allergy…

A: Mole concept:  A mole is separate as the quantity of material that contains atoms, molecules, ions,…

Q: 1. How many ATOMS of carbon, are present in 4.69 moles of carbon tetrafluoride, CF4? atoms of carbon…

A: (1) Given: 4.69 moles of carbon tetrafluoride To find: no. of atoms of carbon (2) Given: 3.41×1022…

Q: ewheed is the empirical formula of a Sompound with P cynd 64.44.0 ? 35.61. GIVE EXPLAINED…

A: Simplest whole number of combination of elements in thier compound is known as empirical formula of…

Q: Part A Upon combustion, a 0.8009 g sample of a compound containing only carbon, hydrogen, and oxygen…

A: The combustion reactions are a type of chemical reactions where hydrocarbons react with oxygen and…

Q: What is the empirical formula of a compound that is found to be 61.4% vanadium and the rest is…

A: In this question, we want to determine the empirical formula of the compound which contains V and O…

Q: Complete the following tables. Mass of Sample Moles of Sample Molecules in Sample Total Atoms in…

A: The number of moles of a sample is calculated as shown below.

Q: Percent Composition Calculate the percent composition of each element in the following compounds…

A:

Q: A compound that contains only carbon, hydrogen, and oxygen is 40.54% C and 5.44% H by mass. What is…

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Q: Styrene's empirical formula is CH. What mass of styrene contains 2.94 x 1021 atoms of hydrogen? The…

A: We will calculate mass of styrene

Q: Challenge Exercise 7.90 A 2.500 g sample of an unknown compound containing only C, H, and O was…

A: • Number of mole = mass molar mass• mass = No. of moles × molar massGiven,a     mass of unknown…

Q: 3. A sample of caffeine contains 49.48 g C, 5.19 g H, 16.48 g O, and 28.85 g N by mass. Determine…

A: Given,Mass of C = 49.48 gMass of H = 5.19 gMass of O = 16.48 gMass of N = 28.85 gMoles of C, H, O, N…

Q: Please answer part D PART A) What is the maximum number of moles of P2O5P2O5 that can…

A: The reaction for the formation of P2O5 from phosphorous and oxygen is shown as follows, It is given…

Q: Short Response. Solve the following problems. Show all steps leading to the final answer. 1. Find…

A:

Q: What is the percent of M in fictional compound C3M4? Element M has a molar mass of 19.58 g/mol. Show…

A: Answer:- This question is answered by using the simple concept of calculation of percent of the…

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

A: From the elemental analysis we can calculate the empirical formula .

Q: Question 13 The empirical formulae and molar masses of three compounds, A, B and C, are shown in…

A: Given  Compound          Empirical formula          Molar mass      A                         C3H5…

Q: REPORT SHEET LAB Moles and Chemical Formulas 5 A. Finding the Simplest Formula 43.52 0.23 43.81…

A: In this question, the given datas are - (1) Mass of empty crucible+ cover = 43.58 g (2) initial…

Q: Which is an example of an empirical formula? O A. C18H304 B. C6H1202 O C. C6H2O2 O D. C12H2402 Reset…

A: B option  C6H12O2

Q: A compound was analyzed and was found to contain the following percentages of the elements by mass:…

A:

Q: SCIENCE 9 QUARTER 2 WEEK 8 Get Ahead (Elaborate) Monosodium glutamate (MSG) or known as "Vetsin" has…

A: We have to find the percent composition of Sodium. Data given :  C= 35.51% H= 4.77 % N = 8.28 % O=…

Q: What is the difference between empirical formula and molecular formula

A: Empirical formula of a chemical compound is the simplest positive integer ratio of atoms present in…

Q: Question 16 How many molecules are there in 196 g of H3PO4? Use Na= 6.02 x 10 23 1/mol 1.2 x 1024 O…

A:

Q: QUESTION 4 A compound with an empirical formula if CH is found to have a molar mass of 26.04 g/mol.…

A: Since you have asked multiple question, as per our company guidelines we are supposed to answer…

Q: The following data were collected for experiment of determining the empirical formula of manganese…

A: The empirical formula is the simplest ratio of the atoms present in that molecule or compound. By…

Q: mass of sample moles of sample molecules in sample atoms in sample 4.07 g C6H6 4.00.0522 mol…

A:

Q: Write the empirical formula for the following compounds. Show your work.  1. C6H6 2. C8H18 3. C2H6O2

A: Given molecular formula's are : 1. C6H6 2. C8H18 3. C2H6O2  Empirical formula = ?

Q: How many atoms of nitrogen are present in 0.0060 moles of Florasulam? Answer in atoms How many moles…

A: The compound considered is florasulam with the molecular formula C12H8F3N5O3S

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Q: Question 2 How many molecules of ammonia are contained in 10.4 moles of ammonia, NH2? O 177…

A: Avogadro's number represents the number of units in one mole of any substance. This has the value of…

Q: topic: avogadro's number, mole, molar mass benadryl (chemical formula C17H21NO)  show calculations…

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Q: Question 13 How many atoms are present in a 0.600 mole sample of gold? OA 3,61 08.997 1025 C6.02…

A: 1 mole of any substance has 6.022 ×1023 atoms and this number is known as Avogadro's number. It…

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A: The balance equation is given below.10 Li +N2F2 --> 4 LiF + 2 Li3NNumber of mol Li reacted,

Q: A compound is made up of 86% carbon and 14% hydrogen. What is its empirical 6. formula? (C-12;H = 1)…

A: Answer :-  (B) CH2  The empirical formula of the compound = CH2…

Q: 1. How many MOLECULES of sulfur tetrafluoride are present in 2.69 moles of this compound ?…

A: Sulfur tetrafluoride = SF4 One mole of a substance contains 6.023 x 1023 units of that substance (…

Q: Determine whether each chemical formula given is an empirical formula or not. Empirical formula Not…

A:

Q: Multiple Choice: Calculate the empirical formula of a compound with a percent composition of 88.9%…

A: Empirical formula of a chemical compound is defined as the simplest ratio of atoms present in a…

Q: Question 20 1) Calculate the molar mass of Ca3(PO4)2 2) What amount (moles) of compound is present…

A: Given  Molar Mass of Ca = 40.078 g/mole Molar Mass of P = 30.974 g/mole Molar Mass of O = 15.999…

Q: ormula "HO"?  a. Hydrogen monoxide b. hydroxonium ion c. hydronium ion d. Hydrogen p

A: The molecular formula consists of the atoms that format a molecule. Molecular mass is calculated by…

Q: Calculate the number of oxygen atoms in 3.9 grams of KMnO4.

A:

Q: Select all the compounds that have an empirical formula of CH which has an empirical formula mass of…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: Determine whether each chemical formula given is an empirical formula or not. Empirical formula Not…

A: Empirical formula :-  The chemical formula which shows only the relative number (simple ratio) of…

Q: 3. A compound is found to contain 63.52 % iron and 36.48% sulfur. Find its empirical formula.

A:

Q: Calculate each of the following quantities in 0.180 mol of CH140. You may want to reference (Pages…

A: Part C )      15.178    H - atoms  Part D )    6.50484    C - atoms.

Q: Quantity How to Obtain Your Values 16 g/mol (from periodic table) 8. Atomic mass 16 g/mol (periodic…

A: The number of moles of magnesium is = 0.03662551 mol The number of moles of oxygen is = 0.03375 mol…

Q: A compound is found to contain 63.52% iron and 36.48% sulfur. Find its empirical formula.

A:

Q: What is the molar mass of ammonia: NH3? Round answer and elements to the tenths place. (N = 14.0, H…

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Q: What is the empirical formula of a compound that is made up of 81.68% carbon and 18.32% hydrogen?

A: We need to find out the empirical formula of a compound that is made up of 81.68% carbon and 18.32%…

Q: For each of the following: determine the empirical formula, then the name. SHOW ALL WORK! a) A…

A: The formula mass of the molecule (also known as formula weight) is the sum of the atomic weights of…

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.