What is the formula of a compound in which a sample of the compound contains 0.250 moles Ca and 0.500 moles Br?   CaBr   Ca2Br   Ca3Br2   CaBr2

Q: A compound has an epirical formula of CH2O. If the molar mass of the compound is 60g/mol, what is…

A: emperical mass=12+2+16=30 n=60/2=2

Q: Determine the empirical formula for a compound that is found to contain 10.15 mg P and 34.85 mg Cl.…

A:

Q: Calculate the number of C atoms in 0.872 mol of C? Calculate the number of SO2 molecules in 8.44…

A: The answers to the first three questions are given as:

Q: A sample of sulfolane, C.H3O,S, contains 5.00 x 1024 atoms. How many moles of sulfolane are in the…

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Q: What mass of compound is present in 6.10 mol of each of the following compounds? Mass =  g…

A: Given Number of moles = 6.10 Molecular Mass of Ca3(PO4)2 = 310.18 gram/mol Molecular mass of Na2HPO4…

Q: How many moles are contained in 13.8 g of BaCl2 • 2 H2O?

A: Formula to calculate the number of moles of a substance is as follows: Number of moles = mass of a…

Q: A sample of NH3 contains 5.48×1022 molecules. How many moles of NH3 are in this sample?  mol How…

A: Step 1: Calculation for the number of moles of NH3: 1 mole of any substance contains Avogadro's…

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: many molecules were used

A:

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: How many O atoms are in 2.00 g  Al2O3 ? Al = 26.98 g/mole, O = 16.00 g/ mole

A: Recall the data, mass of Al2O3=2.00 g molar mass of Al=26.98 g/mole molar mass of O=16.00 g/ mole

Q: What is the molecular formula of a compound if its molar mass is 183.2 g/mol and its empirical…

A: Consider the given information is as follows; Molar mass of compound = 183.2 g/mol…

Q: Calculate the moles of Cl in 25.0 g of XYCl3 if the compound XYCl3 has a molar mass of 119.38 g/mol.

A: The above given molecule is a chlorine containing compound. As per the given formula the given…

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: 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: What is the empirical formula for an unknown organic compound, if the compound contains 75% carbon…

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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: A compound containing C, H, and O is 30.0% C and 10.1% H by mass. If the compound has a molar mass…

A: Given Element Percentage composition C 30.0 % H 10.1 % O 100- (% C + % H) = 100- (30 +10.1)…

Q: Chemical Composition 1. If you have 3.65 g of Ba(OH)2, how many moles of Ba(OH)2 do you have?

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Q: What is the molar mass of 27.8 mg of a compound that is made up of 3.80 x 1020 molecules? 44.1 g/mol…

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Q: What mass of compound is present in 7.60 moles of each of the following compounds? a.) Ca3(PO4)2 b.)…

A: In chemistry, number of moles refers to a unit of amount. It can also be defined as the mass of a…

Q: How many moles of atoms of each element are present in 1.00 mol of each of the following compounds?…

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Q: Holy many moles of CO2 are contained in 42.0 x 1024 molecules of CO2?

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Q: How many Chromium atoms are present in a 5.00 mole ?sample of Al2(Cr207)3 None of them x 1024 9.03 x…

A: We have given that 1 mole of Al2(Cr2O7)3 contain 6 mole of chromium  Avogadro's number is defined as…

Q: You are given a 10.0 grams sample of ethanol (CH3CH2OH).   Explain how you can use the molar mass of…

A: The Avogadro’s number of any species is defined by a mole. The Avogadro’s number, NA, is equal to…

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: A sample of C₂ H² has 1.76 × 10²4 H atoms. How many carbon atoms does the sample contain?

A: In a molecule of C3H8, the mole ratio of carbon to hydrogen is 3:8.Number of moles of a substance…

Q: Determine molecular formula. An organic compound that only contains C, H, and O was subjected to…

A: Since the compound is made up of only C, H and O. Hence we can assume the empirical formula of…

Q: If the empirical formula of a compound is P₂O3, what could be a possible molar mass of the molecular…

A: Empirical formula= the empirical formula of a chemical compound is the simplest whole number ratio…

Q: How many carbon atoms are in one molecule of Li2CO3?   6 atoms   5 atoms   1 atom   3 atoms   6.02…

A: The molecular formula of the lithium carbonate is = Li2CO3 The number of carbon atoms in one…

Q: Calculate the empirical formula of each substance from their spectrograms. 1) Co = 0.672 g , As =…

A:

Q: Arrange the following compounds (with given mols) with increasing mass of oxygen.  85 mol of…

A: Mass of Oxygen present in 85 mol of ethanol(C2H5OH)= 16*85=1360 gm Mass of Oxygen present in 68 mol…

Q: Give detailed Solution with explanation needed. Don't give Handwritten answer

A: Step 1: Step 2: Step 3: Step 4:

Q: How many individual molecules of Mg(OH)2 are in 5.8 g of Mg(OH)2?

A: Mass of Mg(OH)2=5.8gmolar mass of Mg(OH)2=58.3g/molnumber of molecules=?

Q: A 2.05 g sample of an unknown compound contains H, S, and O. If the compound contains 0.050 gH and…

A: 3rd option is correct that is 58.5%

Q: Determine the empirical formula for a compound containing 40% carbon, 6.7% hydrogen and 53.3%…

A: Carbon = 40%  Hydrogen = 6.7 %  Oxygen = 53.3%  Let there be 100 g of compound , then,  Carbon = 40…

Q: Determine the empirical formula for a compound that is found to contain 10.15 mg P and 34.85 mg Cl.…

A:

Q: What is the empirical formula of a compound that contains 30.0% O, 20.3 % S and 49.4% K? KSO4 O…

A: We have O as 30% , S as 20.3% ,  K as 49.4% , we have to calculate the empirical formula of the…

Q: The molar mass of a compound is the sum of the atomic molar masses for the elements in the compound,…

A: Given, The molar mass of a compound is the sum of the atomic molar masses for each element in the…

Q: A major component of honey is fructose (C6H12O6) with a molar mass of 180.16 g/mol. A tablespoon…

A:

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.