d. Determine the number of ions present in 124 g sample of the compound e. Determine the number of Calcium ions present in 124 g sample of the compound f. Determine the number of Chloride ions present in 124 g sample of the compound

Q: In a lab experiment, 7.64 g of phosphorus reacts with bromine to form 66.77 g of phosphorus…

A: law of constant composition:-  a chemical compound always contains its constituent elements in fixed…

Q: A sample of methane, CH4 , has a mass of 77.00g. Calculate the number of methane molecules in the…

A: Mole concept: According to the mole concept, the number of methane molecules in one mole of methane…

Q: Use this information to find the molecular formula of X.

A:

Q: Determine the number of atoms in 55.0 grams of sodium, Na. (The mass of one mole of sodium is 22.99…

A: Here given, the mass of one mole of sodium is 22.99 g. So, in 55 grams of sodium, there are…

Q: Determine the number of moles of H in each sample. 9.06 mol NH3 0.116 mol N2H4 34.0 mol C10H22

A:

Q: a. How many carbon atoms are in the sam b. How many hydrogen atoms are in the s c. How many oxygen…

A:

Q: 2) a) Write formulas for the figures. Dark circles represent element A and light circles represent…

A: Atomic element : Atomic element have single atoms as their basic unit. Molecular element : The…

Q: 4. Determine the number of atoms present in 7.85 moles of carbon. C

A:

Q: Determine the number of atoms in 21.0 grams of vanadium, V. (The mass of one mole of vanadium is…

A:

Q: A.)What mass of cobalt contains the same number of atoms as 77.0 g of fluorine?

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

Q: How many moles of atoms are in each elemental sample? (a) 4.6 × 102ª Pb atoms (b) 2.87 × 1022 He…

A: (a) ∵ 6.23×1023 atoms of Pb →1 mole of atoms ∴ 4.6×1024 atoms of Pb →4.6×10246.022×1023=7.63865…

Q: Determine the number of atoms in 19.0 grams of sodium, Na. (The mass of one mole of sodium is 22.99…

A: Given: Mass of sodium=19.0 g Mass of one mole of sodium=22.99 g The number of atoms in 19.0 g of Na…

Q: nds, which is ionic? orby c. Cl₂0 d. CaCl2p OORD

A: In Ionic compounds,  Cations and anions are bonded with electrostatic force of attraction.

Q: Determine the number of moles of H in each sample.(a) 4.67 mol H2O (b) 8.39 mol NH3(c) 0.117 mol…

A: Number of moles of a substance is the mass of substance present in a liter of solution.

Q: A sample of Al weighs 52.0 grams. Will a sample of Hg that contains the same number of atoms weigh…

A:

Q: 1. How many MOLECULES of sulfur dioxide are present in 2.82 grams of this compound? molecules. 2.…

A:

Q: The total number of atoms in NaCI

A: The number of atom of an element in its molecules is known as atomicity. SodiumChloride or NaCl is…

Q: 24. The total number of sodium atoms in 46.0 grams of sodium is A. 3.01 x 1023 atoms B. 6.02 x 1023…

A:

Q: For a sample of Carbon that contains 2.41 x 1022 atoms, calculate: • number of moles of carbon in…

A: Introduction: Mole is the amount of substance that contains 6.022×1023 respective particles of that…

Q: Which sample contains the greatest number of atoms? (a) 15 g Ne (b) 15 g Ar (c) 15 g Kr (d) None of…

A: The mole concept is used to solve such problems. The mole concept was introduced by Avogadro to…

Q: How many MOLECULES of carbon tetrabromide are present in 7.44 grams of this compound ?   How many…

A: molecular mass CBr4 is 332 g i .e we have 0.0224 mole of CBr4

Q: A scientist has two samples of gas: The first sample contains one mole of argon atoms and has a mass…

A: 1 mole of any gas has equal no. Of atoms i.e., avogadro no. of atoms 6.023*1023 atoms. Or Equal…

Q: 21. Using Example 2.11 page 64 of your textbook to obtain the mass % of chlorine (Cl) in CH2Cl2 and…

A: Molar Mass of CH2Cl2 = 84.93 g/mol Molar Mass of CHCl3 = 119.38 g/mol We have to find out the…

Q: 7. Name the following compounds a. CI X Br Br b. C. d.

A: According to IUPAC nomenclature, select the longest chain of hydrocarbon which contains the maximum…

Q: 1. How many MOLECULES of sulfur dioxide are present in 6.52 grams of this compound? molecules. 2.…

A:

Q: A: Read each statement below carefully. Place a T on the line if you think a statement is TRUE.…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Analysis of 24.1 g of calcium oxide revealed that it contained 17.2 g of calcium. What mass of this…

A:

Q: A sample of methane, CH4, has a mass of 58.25 g. Calculate the number of methane molecules in the…

A: Given mass of CH4 = 58.25 g Molar mass of CH4 = 16.04 g

Q: Substance X was analysed and found to contain 40.00 % carbon, 6.67 % hydrogen and 53.33 % oxygen by…

A:

Q: 1. How many MOLECULES of sulfur dichloride are present in 1.29 grams of this compound ? molecules.…

A: By definition, moles (n) are related to mass (w) and number of particles (N) as follows: n = wM =…

Q: A compound is found to contain 37.23 % carbon, 7.827 % hydrogen, and 54.94 % chlorine by weight. To…

A: “Since there are multiple questions and it is not mentioned that which one has to be solved so I am…

Q: Write the expression for the equilibrium constant for each equation.

A: The equilibrium constant is the ratio of the product of the concentration of products to the…

Q: Determine the number of atoms in each sample: a. 45 g Si b. 45 g Sn c. 28.2 mg Pb

A: Mole of a substance or a mole of a particles is defined as exactly 6×10^23 particles which may be…

Q: An element's percentage of the total mass in a compound containing the element. A law stating that…

A: The composition of a chemical compound is determined using elemental analysis of inorganic elements.…

Q: Determine the number of atoms in 27.0 grams of bromine, Br. (The mass of one mole of bromine is…

A: Given : mass of 1 mole of bromine i.e Br = 79.90 g And mass of Br = 27.0 g

Q: Determine the number of atoms in 41.0 grams of sodium, Na. (The mass of one mole of sodium is 22.99…

A: Given: Mass of sodium 41.0 g            Mass of one mole of sodium is 22.99 g/mol First divide the…

Q: number of atoms in 5.12 g P

A: number of atoms in 5.12 g for  Phosphorus

Q: if something only contains Hydrogen and Oxygen. Analysis of a 5.00 g sample of this sample of this…

A: Amount of any substance can be calculated in any compound by using amount of other substances…

Q: A 0.8870 g sample containUng Qaix Naci and KGI was Teated win AgNO3. formed had a mass of 1.913 g.…

A:

Q: Calculate the number of atoms in sample. 0.082 g Sr

A: given sample is 0.082 g of Sr we know 1 mol has 6.022 × 1023 atoms

Q: Use what you have just learned about chemical formulas to identify the following as element (atomic…

A: Following are the appropriate answers of the given questions.

Q: Use the mass spectrum of lead shown here to estimate 100% - the atomic mass of lead. Esti- mate the…

A: INTRODUCTION: Mass spectroscopy is defined as the technique used to determine the atomic mass of an…

Q: Use what you have just learned about chemical formulas to identify the following as element (atomic…

A: The atoms , molecules, compounds and mixtures are as follows.

Q: Determine the number of atoms in 23.0 grams of calcium, Ca. (The mass of one mole of calcium is…

A: Mass of Ca = 23 g  Molar mass of Ca = 40.08 g/mol

Q: Determine the number of atoms in 61.0 grams of calcium, Ca.

A: Given;

Q: The molecular mass of a compound containing 75.0 % carbon, 10.5 % hydrogen, and 14.6 % nitrogen is…

A: given 75.0 %  C 10.5 %H  14.6 %N molecular mass 384.6.

Q: Calculate the mass of sample. 72.1 mmol SO2

A: Given:  The number of moles of SO2=72.1  mmol=72.1×10-3mol The molar mass of…

Q: A sample of methane, CH4, has a mass of 38.75g. Calculate the number of methane molecules in the…

A: Mole concept:  The number of molecules in one mole of the substance is equal to the Avogadro number…

Q: Rank the following according to DECREASING number of S atoms: A. 31.0 g S8 B. 50.0 mL CS2 (density…

A: To rank them, first calculate number of S atoms in each case.

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.