How many atoms of zinc are present in a sample that contains 7.79×102 grams of zinc?The molar mass of zinc is 65.38 g/mol 2.60×1072 atoms 7.79×102 atoms 5.05×1022 atoms 8.55×1025 atoms 7.18×1024 atoms

Q: How many chlorine atoms are present in 0.778 mol of Cl,? O 4.69 x 1023 atoms 1.56 atoms O 9.37 x…

A: Answer: 9.37 × 1023 chlorine atoms are present in 0.778 mole of Cl2

Q: Which of the following contains the smallest number of molecules? 1. 5.0 g N2 2. 5.0 g CO2 3. 5.0 g…

A: Firstly calculate the of number of mole of each compound from given formula: where as n = number of…

Q: How many sulphur atoms are contained in 30 g of Al2(S04)3 (Molar mass: 342.15 g/mol) ? OA 5.78 x…

A: Applying no. of moles  n= w/M  NA= 6.022E+23

Q: Hydroxychioroquine (CigHasCIN;O) is a medication used to prevent and treat malaria in areas where…

A:

Q: How many moles of specified particles are present in a sample of each of the following substances if…

A:

Q: How many molecules of N204 are in 76.3 g N2O4? The molar mass of N2O4 is 92.02 g/mol. O 7.26 1023…

A:

Q: Calculate the molar mass of Al2 O3. Molar mass = = g/mol Calculate the molar mass of Al(NO3)3. Molar…

A: given :-  molecular formula :  Al2O3  Al(NO3)3  To be calculated :-  molar mass of given compounds

Q: If the empirical formula of a compound is P2O5, what could be a possible molar mass of the molecular…

A: molar mass of P2O5 :

Q: How many atoms of hydrogen are in a 1.0 g sample of acetic acid, CH3COOH? The molar mass of acetic…

A: As per the given data we haveMass of acetic acid=1gMolar mass of acetic…

Q: A compound that is often used for dry cleaning contains carbon, hydrogen, and chlorine. It has a…

A: Given: The percentage of carbon in the compound = 24.3 % The percentage of hydrogen in the compound…

Q: How many moles are contained in each number of grams of table sugar (C 12H 22O 11, molar mass 342.3…

A: Given data molar mass of sugar ( C12H22O11 ) = 342.3 g/mole   mass of sugar part(a) 0.500 g…

Q: 5. Aspartame is an artificial sweetener that is 160 times sweeter than sucrose (table sugar) when…

A: Molecular formula is C14 H18 N2 O5  We need to find it's molar mass.  Amount of molecules in 10.0 g…

Q: Carbonic acid (H2CO3) can form water and carbon dioxide upon heating. How many grams of carbon…

A: We can solve the problem by the following steps : At first we need to determine how many moles of…

Q: Determine the number of sulfur present in each of the the following quantities. a. 3.01 x 10^23 S2O…

A: a) Given : Number of S2O molecules = 3.01 X 1023 molecules. Since each molecule of S2O contains 2 S…

Q: A student is conducting a laboratory experiment with sulfur hexafluoride (SF6) with a molar mass of…

A: Given data, Mass of SF6 = 235.7 g Molecular weight of SF6 = 146.07g/mol

Q: b. 8 HNO3 + 3 Cu 3 Cu(NO3)2 + 4 H2O + 2 NO -> 3.2 g IMoICh 3.29(4x 63. 55 gcu Molar Mass

A: Given: Mass of Cu = 3.2 g Molar mass of Cu = 63.546 g/mol Molar mass of HNO3 = 63.01  g/mol Molar…

Q: What is the molecular formula of each of the followingcompounds?(a) empirical formula CH2, molar…

A: Equation for finding molecular formula from the empirical formula,

Q: Heroin (molar mass = 359 g/mol) is also a narcotic drug and is a derivative of morphine. How many…

A:

Q: In the following reaction, sulfur (S) reacts with aluminum chlorine (AICI3) to produce aluminum…

A: Molar mass of the compounds: a.       S Molar mass of S = 32.065 g/mol   b.      AlCl3 Molar…

Q: 18. Calculate the number of grams in each of the following (a) 4.25 x 10mol H,SO, (b) 4.5 x 1022…

A:

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…

A:

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

A: (1) Empirical formula is the representation of different elements in a given compound as a  Normal…

Q: A 2.25 mol sample of an element has a mass of 51.8 g. What is the molar mass?

A: The sum of the total mass in gram of the atoms present in a molecule per mole is the molar mass or…

Q: Which of the following samples contains the greatest number of atoms? O 2.0 mole of Ar O 0.1 mole of…

A: In this question, which sample contains the greatest number of atoms.

Q: 25.0 g sample of Ca(NO3)2.

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: How many hydrogen atoms are in a 1.0 g sample of acetic acid, CH3COOH? The molar mass of acetic acid…

A: Mass of acetic acid, CH3COOH sample = 1.0 g Molar mass of acetic acid= 60.06 g/mol Hydrogen atoms…

Q: What is the molar mass of H2SO4? (Molar mass of H = 1.0079 g/mol; S = 32.065 g/mol; O = 15.999…

A: 6.022×1023 = 1 mole = Avogadro Number Molar mass :-  The mass of one mole of atoms or molecules is…

Q: How many moles of atoms are contained in each of the following? 5.41 x 1024 H2O molecules 30.2 g…

A: Given is, 5.41 x 1024 H2O molecules 30.2 g of Sn.

Q: The empirical formula of a compound is determined to be HO and its molar mass is known to be 34.016…

A: The empirical formula of a compound is = HO The molar mass of the compound is = 34.016 g/mol We know…

Q: How many Li atoms are contained in 77.9 g of Li? 5.90 x 1025 Li atoms 7.09 x 1021 Li atoms 8.49 x…

A: Given: Mass of Li atoms = 77.9 g.

Q: Obtain the moles of substance in the following. a. 2.57 g C mol b. 8.88 g Cl2 mol с. 74 g CH10 mol…

A: Calculate moles of each substance---

Q: In the laboratory, a student weighs out 0.0852 g of cobalt on balance. How many atoms of cobalt…

A: Molar mass of an element represents the mass of one mole of the element.

Q: A pure sample of an unknown molecule has a mass of 35.51 g and contains 0.2000 moles. What is the…

A: 177.55 g/mol

Q: Calculate the molar mass of lead(II) nitrate, Pb(NO3)2(s)

A: The molar mass is the sum of masses of all the atoms present in compound.

Q: Determine the number of atoms in 3.50 g of an unknown substance with a molar mass of 197g/mol. * O…

A: NOTE : Since the number of atoms in each molecule of substance or the formula of substance is not…

Q: What mass of XeCl4 contains 11.245 x 1022 molecules of XECI4? Molecular mass (g/mol) XeCl4: 273.09…

A: We determined mass of XeCl4 by using avogadro's number. NA = 6.022×1023 molecules per mole .

Q: The percent composition of aluminum (atomic weight 26.9815386) in Al2O3·2SiO2·2H2O (Molar mass is…

A: Given data :  Atomic weight of Aluminium= 26.9815386 g/mol  As the compound has two moles of Al , so…

Q: Given 70 g of Cl2,  how many particles of Br2 is produced? Cl2 + 2KBr → 2KCl + Br2

A: The number of particals of Br2 are calculated as :

Q: 6 What is the mass of 2.0 billion billion atoms of gold? (1 billion is 1 x 10^9, so a billion…

A:

Q: The empirical formula for a compound is CH20, and the molar mass is 180.2 g/mol. Which is the…

A: The question is about to determine the Molecular Formula of the Compound from the given Empirical…

Q: Given molar mass find the mass in grams in each of the following substance 7211 x1024 atoms of…

A: Given is, Atoms of Copper= 7211 x1024 molar mass of Cu = 63.55 g/mol

Q: What amount (moles) is represented by each of these samples? a. 20.8 mg caffeine, C3H10 N4O2 Amount…

A:

Q: How many grams of Br, are needed to form 65.7 g of AIBr3? 2 Al(s) + 3 Br) 2 AIBr3(a)

A: Since you asked multiple questions so as per Q&A guidelines of portal I solve first question…

Q: Complete the table below for calculating the molar mass of the ionic compound calcium iodide .…

A: To understand the heneralconcept , you should know some of the given points; •Molar mass is the mass…

Q: What is the molar mass of aspirin, C9H804? A)252.25 g/mol B)180.17 g/mol C)244.17 g/mol D)116.08…

A: Molar mass = sum of atomic mass of all the atoms present in the molecule Since each molecule of…

Q: A compound is found to have an empirical formula of C2H7O.  Which of the following cannot be the…

A: Empirical formula: It represents the simplest ratio of individual atoms of all elements present in a…

Q: A student is conducting a laboratory experiment with sulfur hexafluoride (SF6) with a molar mass of…

A:

Q: What amount of moles of PCI3 form given 275 g Cl2 ? 6Cl, → 4PCI, P +

A: ★ Answer : 2.59 moles of PCl3 will be formed. ★ Solution :

Q: Number of atoms in 0.2 g molecule Br3O3 is (molar mass of Br3O8 is 368 g mol-') (1) 0.22 NA (2) 2.2…

A: Given: Mass of Br3O8 = 0.2 g And molar mass of Br3O8 = 368 g/mol.

Q: Suppose the masses of Sodium chloride and water provided in the table represent the mass of a level…

A: The more the orderly arrangement of atoms of substance , more is mass of the given substance, As we…

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.