order to identify an unknown compound found at an environmental cleanup site, an analytical chemist determines the percent composition of the compound. The results are shown in the table below. What is the empirical formula of the compound?   Element % of total mass Atomic Mass bromine 41.7 79.9 carbon 18.8 12.0 chlorine 36.8 35.5 hydrogen 2.6 1.0 CHClBr C4HCl5Br10

Q: Which sample has the greatest mass of atomic oxygen?   36.0 g of H2O   1.0 mol of NO2   1.20 ×…

A: Three samples  are given:36.0 g of H2O1.0 mol of NO21.20 × 1024 molecules of O2

Q: A sample of monochloro tetraborane (10), B4H9Cl, contains 2.5 mol of the compound. Determine the…

A: The objective of the question is to determine the amount in moles and the number of atoms of each…

Q: Complete the table below for calculating the molar mass of the ionic compound nickel(II) chloride.…

A: Answer:Molar mass of an ionic compound is equal to the sum of all the ions present in the molecule.

Q: If a sample of H2O contains 9.02 × 1023 molecules, how many grams of H2O is this?   A. 3.00 g H2O…

A: Third option. C. 27.0 g of H2O

Q: Complete the table. Element Moles Mass Cr 0.00442 Fe 73.5 mg Ti 1.009 x 10-3 Hg 1.78 kg

A: Mole is represented by the symbol mol. It is unit of measurement of substance. Mass is defined as…

Q: An unknown compound containing only carbon, hydrogen, and oxygen undergoes combustion analysis. The…

A:

Q: Predict the element that will have the highest mass percent composition in each compound without…

A: a. Given: C3​H6​O;MC​=12.01g/mol;MH​=1.01g/mol;MO​=16.00g/molStep 1: Solve for the molar mass of the…

Q: How many atoms are contained in 0.98 moles of iron (Fe)?

A:

Q: Determine the empirical formula for a compound that is 36.86% N and 63.14% O by mass. O NO O NO2 NO3…

A: When two or more atoms combine with each other, they will form molecule and those molecules has…

Q: The elemental mass percent composition of succinic acid is 40.68% C, 5.12% H, 54.19% O. Determine…

A: The Mass of compound = 100 g The mass of C = 40.68 g The molar mass of C = 12 g/mol  The mass of H =…

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

A:

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

A: The question is based on mole concept The formula used and solution is given in the picture

Q: Complete the table below for calculating the molar mass of the compound disulfur decafluoride.

A: We have given a compound disulfur decafluoride. We have to complete the given table for calculating…

Q: How many Ne atoms are contained in 32.0 g of the element? 1.07 x 10-21 atoms 3.88 x 1026 atoms O…

A: The question is based on mole concept.we need to calculate number of atoms present in given quantity…

Q: How many H atoms are present in 6.95 moles of C2 H5OH?

A: Given, number of moles of C2H5OH = 6.95 moles Number of H atoms = ?

Q: Which sample has the greatest amount of atomic nitrogen? 33.0 g of N2O 3.01 × 1023 molecules of N2…

A: The objective of the question is to determine which of the given samples contains the greatest…

Q: D. Calculate the mass (g) of the following samples. 25) 238 moles of lead 26) 1.54 x 10° moles of Zn…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: Calculate percent composition from a compound formula. Determine the percent composition of each…

A: Given compound: K2CO3 We have to determine the percent composition of each element in K2CO3.

Q: Complete the table below for calculating the molar mass of the compound dinitrogen monoxide.…

A:

Q: molecules CO₂ 15 mol CO₂ 7. How many atoms of oxygen are in 1.25 mol of NaNO? 03 = 6.022x1023 1.25 X…

A: 7) Given, moles of NaNO3 = 1.25 mol Number of Oxygen atoms = ?

Q: Convert 6.00 moles of calcium to atoms. O 8.50x1024 atoms O 1.56x1023 atoms O 3.61x1024 atoms…

A:

Q: compound has the mass percent data given below . Determine its empirical formula. 32.43 % carbon by…

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

Q: Complete the percent composition for the atoms in Na₂O. All answers are numbers. Use no units. Atom…

A: The compound given is Na2O Element molar mass of sodium = 23.0 g/mol  Element molar mass of oxygen=…

Q: The amino acid glycine has the chemical formula C2H5NO2. What is the percent composition of nitrogen…

A:

Q: bromine carbon chlorine hydrogen % of Total Mass 41.7 18.8 36.8 2.6 Atomic Mass 79.9 12.0…

A: The mass percentage of bromine, carbon, chlorine, and hydrogen is 41.7%, 18.8%, 36.8%, and 2.6%,…

Q: Number of atoms of Carbon in 15 moles of C4H10 are: 90.33x10^23 361.32x10^23 O 6.23x10^23

A:

Q: A certain chemical substance has the following percent composition by mass. Element Mass Percent…

A: Supose we have 100 g of given compound   therefore mass of C = 43.45 g  mass of H = 8.02 g  mass of…

Q: A compound has the following elemental analysis: Element % composition C 48.65 H 8.11 O 43.24…

A: Element %  of  C = 48.65 % = 48.65 gElement %  of  H = 8.11 % = 8.11 gElement %  of  O = 43.24 % =…

Q: A compound containing chromium and silicon contains 73.52 mass percent chromium. Determine its…

A:

Q: Question 11 How many moles of carbon are present in 1.37 x 10 25 atoms of carbon? O 8.25 moles O…

A:

Q: A compound that contains onlý carbon, hydrogen, and oxygen is 68.5% C and 8.63% H by mass. What is…

A: We have given that   % of C = 68.5 %  % of H = 8.63 % % of O = 100 - 68.5 -8.63 = 22.87 %

Q: Number of atoms of Carbon in 18 moles of C4H10 are: 433.58x10^23 7.48x10^23 O 108.40x10^23…

A: The number of moles of a compound can be obtained by Avogadro's number. It can be calculated as…

Q: Number of atoms of C in 10 moles of CAH10 are: O 24.09x10^23 O 240.88x10^23 O 4.15x10^23 O…

A:

Q: A mineral sample is obtained from a region of the country that has high arsenic contamination. An…

A: The mineral sample has the elemental composition: Element atomic weight (g/mol) Percent…

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.