Show your work: a. How many moles is 55 g of NaCl? 0.025 g of NaHCO3? b. How many grams is0.5 moles of NaCl? 2.11 moles of NaHCO3? c. Molarity is defined as the moles of solute in 1 Liter of solution. What is the molarity 0.50 mol Co(NO3)2 in 0.25 L of solution What is the molarity of68 g of NiCl2 in 0.15 L of solution

Q: How many moles of sodium ions are contained in 8.67x10^-3 grams of NA2SO3? The molar mass is…

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Q: What is the percent Chloride in in a sample of 3.7 g of the sample produced 2.7 g of CdCl2 when…

A: Answer:

Q: Na2CO3(aq) + CaCl2⋅2H2O → CaCO3(s) + 2NaCl(aq) + 2H2O(aq)  A. how many moles of CaCl2•2H2O are…

A: The reaction taking place is  Na2CO3(aq) + CaCl2⋅2H2O → CaCO3(s) + 2NaCl(aq) + 2H2O(aq)  A) Since…

Q: 8. Answer the question below. Use the rubric in the materials for help if needed. You have a 155 g…

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Q: Contains 157 Zine oxide ointment APF of eine oxide mixed with 85 g of smple ointment . you require…

A: Answer: Initially 15g of ZnO is mixed in 85g of simple ointment, which means, 100g Ointment APF…

Q: Calculate the moles of CuCu in 8.2×1021 atoms of CuCu.   Express your answer using two significant…

A: Number of Copper atoms present = 8.2x1021 We know that, 1 mole of atoms contain= 6.023x 1023 atoms.…

Q: How many milliliters of 0.150 M KOH is needed to completely react with 0.432 g of sulfuric acid? 2…

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Q: 1. Determine the experimental mole-to-mole ratio of Na2CO3 to NaCl from reaction data. a) First,…

A: Note - Since you have asked multiple questions, we will only do the first question for you. To get…

Q: oluene (MW 92.141, d 0.87) is a chemical solvent. How many moles of toluene are present in 87.9 mL…

A: Given   volume of Toluene = 87.9 mL               density   = 0.87 gram/ mL   Number of mole of…

Q: Cu   +   8HNO3  --> 3 Cu(NO3)2    +  2 NO   +  4  H2O In the above equation how many moles of water…

A: Given  Mass of HNO3 = 197.1 g Number of moles of water = ?

Q: How many grams are contained in 0.482 moles of Na2CO3?

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Q: How many grams of H2O2 does 25.0 mL 3.6 M H2O2 contain?

A: Since the moles = concentration X volume of solution in L  Given concentration of H2O2 = 3.6 M and…

Q: How many moles of CrO42- are in 5.0 mL of 0.0024 M K­2CrO4? How many moles of Ag+ are in 5.0 mL of…

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Q: NItroglycer in (e3 HSN30,) 403 Hs Ng Oq >6Ngt 13c0, + 10 tgO + Og what is the maximum amount of Og…

A: Given  Reaction  4C3H5N3O9   → 6 N2 + 12CO2  + 10H2O + O2 Mass of O2 = 8.00 × 102 gram  Mass of O2…

Q: 1. Determine the experimental mole-to-mole ratio of NaHCO; to NaCl from reaction data. a) First,…

A: We have to find mol to mol rate of NaHCO3 and NaCl

Q: Using the balanced reaction below, Given 1.206 g of AICI3 , calculate how many grams of PbCl2 will…

A: Given that: mass of AlCl3 = 1.206 g 3Pb(NO3)2 (aq) + 2AlCl3 (aq) →3PbCl2 (s) + 2Al(NO3)3 (aq) molar…

Q: A fungus that grows on peanuts produces a deadly toxin. When ingested in large amounts, this toxin…

A: ✓There are two types of fungus found in nature (a) Poisonous  (b) Beneficial

Q: (01) 1) What is the amount of substance in moles in 12 g of magnesium (Mg) 2) What is the amount of…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

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Q: A beaker contains 100.0 mL of water. To it is added 10.0 mL of dilute nitric acid (HNO3). Calculate…

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Q: Molecular Formula and Molar Mass Calculations The molecular formula of C15H11I4NO4 molecule.…

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Q: Compute the molarity of a solution that contains 5.62 g of Na2CO3 in enough water to make 750.0 mL…

A: Given: mass of Na2CO3 =5.62g molar mass of Na2CO3 =105.98g/mol number of moles of Na2CO3(n)=mass of…

Q: Find the percent, by weight, of each component.

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Q: Question: What is the MW of NaCl? grams = 1 Mole of Nacl Question: How many molecules of NaCl are in…

A: Molecular weight of any molecule is defined as sum of atomic weights of all the atoms present in…

Q: Convert 22.89 grams of X3Z4 into moles of the same compound. Assume that the molar mass of X is…

A: Given, Molar Mass of X = 72.43 g/mol Molar mass of Z = 11.84 g/mol Mass of X3Z4 = 22.89 g  Moles  =…

Q: Part A How many moles are in 20.0 g of CO2? Express your answer to three significant figures. 0.4…

A: Part A:- Carbon has a relative atomic mass of 12. Oxygen has a relative atomic mass of 16.…

Q: Calculate the number of LiLi atoms in 8.5 moles of LiLi.   Express your answer using two significant…

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Q: Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution…

A: Given the initial mass of reactant, sodium carbonate (Na2CO3) = 3.90 g Molar mass of sodium…

Q: Copper(I) iodide (CuI) is often added to table salt as a dietary source of iodine. How many moles of…

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Q: Questions 22 and 23 pertain to the following case: A patient is prescribed lithium carbonate…

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Q: How many grams of Fe2O3Fe2O3 can form from 26.4 g26.4 g of O2O2?…

A: Given that, a chemical reaction is 4Fes + 3O2g→2Fe2O3. We have to tell the amount of Fe2O3 that can…

Q: Which one contains greater number of molecules?  25 g of H2O or 25 g H2S?  Explain your answer.

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Q: Aspirin (C9H8O4) is a medication used to reduce pain, fever, or inflammation. Find out the mass of…

A: 1 mole = 6.022×1023 ( Avogadro's number ) The mass of one mole of atoms is called atomic mass  For…

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Q: In a beaker containing 20.0 g AgCl, 30.0 of NaCl, and 50.0 g of KCl. How much chlorine (in grams) is…

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Q: How many grams O in 115.6 g Fe(OH)g? Molar mass of Fe(OH)g is 106.867 Hint: 1 mole Fe(OH)g has 3 mol…

A: Please refer to next step for solution:

Q: A fungus that grows on peanuts produces a deadly toxin. When ingested in large amounts, this toxin…

A: we need to calculate the mass of fungus

Q: chemist fermented 7.25 g of glucose. How many moles of glucose are there in 7.25 g?

A: Moles is unit for measuring the amount of substance in SI form. In order to find the number of moles…

Q: 1. How many moles are present in the 5.00 g of sodium bicarbonate you used for this experiment? 2.…

A: A question based on mole concept that is to be accomplished.

Q: CoCl2⋅6H2OCoCl2⋅6H2O is heated, the residue has a mass of   0.345 gg   . Calculate the % H2O in the…

A: The given formula of hydrate crystal is CoCl2.6H2O  When a hydrate crystal is heated the water…

Q: 6. So, what is the difference between a subscript and a coefficient? 7. Which of the following…

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Q: Will 1 L of 1 M NaCl contain more chloride ions than 0.5 L of 1 M MgCl2? Explain. 1 L of 1 M NaCl…

A: Given : Concentration of NaCl = 1 M Volume of NaCl solution = 1 L  Concentration of MgCl2 = 1 M And…

Q: Convert 36.45 moles of X5Z3 into grams of the same compound. (Assume that the molar mass of X is…

A: Given data: Number of moles of X5Z3 = 36.45 moles Molar mass of X = 76.97 g/mol Molar mass of Z =…

Q: A Moving to another question will save this Question 40 what is the coefficient of H20 when the…

A: A balanced chemical equation follows the law of conservation of mass. This implies that the mass of…

Q: 1. How many moles are present in the 5.00 g of sodium bicarbonate you used for this experiment?

A: Moles of molecule can be calculated using given mass divided by its formula mass.  Moles = Given…

Q: There are 0.96 mol of ibuprofen C13H18 O2 in a bottle. How many mgs? Show cross reactions,…

A: Following information given in the question - Moles of ibuprofen, C13H18O2 = 0.96  And , Molecular…

Q: How many sodium ions are contained in 99.6 mg of Na2SO3?  Please show how you calculated this…

A: The weight of Na2SO3 = 99.6 mg = 0.0996gThe molecular weight of Na2SO3 = 126.05g/mol

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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.