b. Calculate the number of moles are represented by 24.75 grams of calcium chloride, CaCl. c. Calculate the total number of ions found in 345.67 grams of sodium fluoride, NaF.

Q: 6.15×1023 KK atoms Express your answer using three significant figures.    How many moles of atoms…

A: We know 1mole = 6.022x1023  So we can easily find the number of moles by using- Number of…

Q: Change 1.25 x 10^25 atoms of yttrium into moles of yttrium

A:

Q: Convert 0.19 moles of carbon dioxide to grams of CO2.

A: Answer: This is question based on mole concept where each mole of the substance has a fixed mass…

Q: What is the theoretical yield of MgO from the combustion of 5.25 x 10^23 atoms of Mg and 4.69 x…

A:

Q: Mg(s) + 2 HCl(aq) −−−→ MgCl2aq) + H2(g)   given that the mass of magnesium is 0.030 g, find the…

A:

Q: Calcium Chloride CaCl2 has a molar mass of 110 grams per mole. 11.0 grams of CaCl2 dissolved in 500…

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

Q: How many grams of magnesium oxide can be produced by reacting 0.248 g magnesium that is 97.5% pure…

A: Given mass of Magnesium = 0.248g% purity of Magnesium = 97.5%No.of molecules of oxygen = 5.36 x…

Q: Suppose a piece of silver jewelry contains 7.78×1022 atomsatoms of silver (AgAg).

A:

Q: 5) 0.7971 g of molecule, X, is found to contain 3.0 x 1022 atoms. Deduce the identity of X. Given N…

A: Given: Mass of X2 = 0.7971 g Atoms of X2 = 3.0×1022 NA = 6.023×1023 mol-1

Q: Fluorides of the noble gas xenon can be formed by reaction with fluorine under high temperature and…

A: Details

Q: A crucible is placed on a balance and is found to have a mass of 26.639 grams a sample of…

A: Mass of crucible = 26.639 g Mass of crucible + mass of Na2SO4·xH2O = 27.085 g Therefore mass of…

Q: What mass of HCl in grams is neturalized by a dose of milk of magnesia containing 3.26g Mg(OH)2?

A: Given :- mass of Mg(OH)2 = 3.26 g  To calculate :- mass of HCl (in g)

Q: A solution of ammonia and water contains 2.00×1025 water molecules and 7.60×1024 ammonia molecules.…

A: First we need to calculate the hydrogen atoms from both water and ammonia molecules. Then total…

Q: LNH2 You have access to the following solutions for your experiment: 1 M NaOH 1 M HCI 1 M CH3COOH 1…

A: We would use liquid Liquid Extraction  for the separation  of following  substances  and acid  base…

Q: 4NH3(g) + 502(g) 4NO(g) + 6H2O(g) When 8.7 moles of ammonia reacts, determine the mass of water…

A:

Q: What amount in moles is 4.77x10^25 (to the power of 25) molecules?? 1.2.87x10^49 mol 2.79.2 mol…

A: Molecules = 4.77 x 1025

Q: Gaseous butane (CH3(CH2)2CH3) will react with gaseous oxygen (O2) to produce gaseous carbon dioxide…

A: 2C4H10 + 13O2 = 8CO2 + 10H2O

Q: A crucible is placed on a balance and is found to have a mass of 26.639 grams a sample of…

A: Since on heating the compound, the mass of water will be lost as it will get vaporised  Hence the…

Q: A binary compound of the elements X and Y is 1/3X by mass.  The molar mass of element X is ¾ the…

A: Empirical Formula  It is the simplest possible ratio of atoms present in a compound. To get the…

Q: Calculate the number of moles of chlorine present in 120  g g of chlorine gas.

A:

Q: 8.15g of phosphorus reacts with bromine to form 71.22g of phosphorus tribromide. Calculate the…

A:

Q: (Mass of crucible is 24.98g. The mass of the cover is 11.36g. The mass of the crucible, cover, and…

A: The mass % is equal to the ratio of the mass of the substance to the total mass multiplied by 100.…

Q: Nitric acid is used in the production of fertilizer as well as nitroglycerin.  Convert 2.9 x 1021…

A: Since, we know that ; 1 mol of nitric acid contains 6.022 × 1023 molecules. So,  2.9 × 1021…

Q: A sample containing only carbon,hydrogen,phosphorus and oxygen is subjected to elemental analysis.…

A:

Q: What mass of phosphorus pentachloride would be produced by the complete reaction of 15.2 g of P4?

A: The balanced chemical equation from the above question is  P4 + 10 Cl2 → 4 PCl5 Molar mass of P4  =…

Q: before 1959, oxygen was popularly used to define the unit of mol. in 1967, the international…

A:

Q: For each of the equations, determine the change in the number of moles of gas, Angas . (NH,),CO3(s)…

A: A chemical reaction is represented by using a chemical equation. In a chemical equation, the species…

Q: 2. How many grams of oxygen gas must be reacted with excess sulfur dioxide to produce 87.1 g of SO;?…

A:

Q: How many moles of hydrogen carbonate need to decompose to produce 8.70 x 1023 molecules of carbon…

A: Hydrogen carbonate = HCO3- Decomposition reaction of hydrogen carbonate occurs with H+ - HCO3- + H+…

Q: A sample of soda-lime glass for tableware is analyzed and found to contain the following percentages…

A: Given- % by mass of oxides SiO2 = 72.4% Na2O =18.1% CaO = 8.1% Al2O3 =1.0% MgO = 0.2% BaO = 0.2%…

Q: When aluminum metal is placed into hydrochloric acid (HCl), aluminum chloride and hydrogen gas are…

A: Here we are required to find the mass of HCl needed to produce 2.02gm of hydrogen gas

Q: What is the percent by mass of KClO3 in the original mixture

A:

Q: A given sample of Xenon flouride compound contains molecules of the same type XeFn where n is some…

A: Chemical formula which shows number of chemical elements and total element’s number available in…

Q: Write a balanced chemical equation based on the following description:solid C₄H₁₀O is burned with…

A: Given reaction is shown below,C₄H₁₀O is burned with oxygen gas to produce gaseous carbon dioxide and…

Q: Tartazine, C16H9N409Na352, is a synthetic yellow food dye that provides a lemon color to various…

A: The objective of the question is to find out the mass of tartrazine in grams that corresponds to 7 x…

Q: 5 g of hydrated barium chloride is heated in a crucible until the mass of the sample no longer…

A: Given: Mass of hydrated barium chloride = 5 g Mass of sample after heating = 4.26 g The loss of mass…

Q: For the reaction N, + 3H, 2NH, what is the Mole ratio of nitrogen to hydrogen? t. Mole ratio of…

A: In a balanced chemical equation , the stoichiometric coefficients of reactants and products…

Q: How many moles of Ba(OH)2 are present in 215 mL of 0.800 mol L Ba(OH)2? Express your answer…

A: Given: Volume of Ba(OH)2 = 215 mL = 0.215 L Concentration of Ba(OH)2 = 0.800 mol/L

Q: See the example in Introduction for set-up of calculations. Calculate the number of a) moles of F b)…

A: Number of moles is given by the ratio of mass of the substance to that of the molar mass of the…

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.