You weigh a sample of 2.0moles of a substance to be 7.1 kg. Why is an answer of 3.55kg/mol incorrect? Describe in a sentence?

Q: A solution is made by dissolving 8.55 g of KClO3 into enough water to make 295 mL of solution. What…

A: Molarity can be obtained by the given equation below:

Q: copper sulphate (CuSo4) with a concentration of 0.00095 mol l-1. If they wanted to prepare one litre…

A: Here, Molecular weight of CuSO4= RAM(Cu)+ RAM(S)+ 4×RAM(O).…

Q: Barium nitrate reacts with sodium carbonate in the following way:   Ba(NO3)2(aq)­ + Na2CO3(aq) à…

A:

Q: Complete the table: Solute Mass of solute Moles of solute Volume of solution Molarity of solution…

A: MgSO4 Molar mass of Magnesium Sulfate = 120.3 g/mol

Q: 3. A 1.20-gram sample of a hydrated salt is heated to a constant mass of 0.80 gram. What is the…

A: Introduction: The amount of water in a hydrated salt can be determined by drying the hydrated salt.…

Q: If 0.1718 L of a 0.3556-M C3H7OH solution is diluted to a concentration of 0.1222 M, what is the…

A: In the process of dilution, the solvent is added in a solution, than the volume of solution…

Q: What is the concentration of the NaCl solution that results when 0.150 L of a 0.556-M solution is…

A: The concentration of the NaCl solution is to be calculated

Q: Determine the molarity of Cl- if a solution is prepared by dissolving 23.7 g of CaCl2 in 375 g of…

A: The given data contains, mass of CaCl2=23.7 gmass of water=375 gmolar mass of CaCl2=110.98 g/mol

Q: What mass of calcium hydroxide could be reacted by 1.000 g hydrochloric acid?

A:

Q: he Law of Conservation states that matter cannot be created nor destroyed during a reaction. How…

A: Hi, the first question is incomplete as the experiment is not given. Hence we are solving the second…

Q: In the experiment, why is the mass of the test tube and reaction products less after heating than…

A: Given: In the experiment, the mass of the test tube and reaction products were less after heating…

Q: Aspirin (C9H8O4) is synthesized by reacting salicylic acid (C7H6O3) with acetic anhydride (C4H6O3).…

A: Given: Mass of salicylic acid = 1.00 x 102g= 100g To find: The mass of acetic anhydride Maximum mass…

Q: You are making 2,000 mL of a 1.6 M KBr solution.  How many moles of KBr will be added?  How many…

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Q: Pure water has a density of 1.000 g/mL. Assume that water determines the volume of the solution.…

A:

Q: Suppose that 4.1 mol NO2 and 0.80 mol H2O combine and react completely. Which reactant is in excess?…

A: Solution stoichiometry involves the calculation of concentration of solutions in the given…

Q: A solution is made by dissolving 28.5 g of iron(III) fluoride, FeF3, in enough water to make exactly…

A: Given data contains, Mass of iron (III) fluoride is 28.5 g. Volume of the solution is 250 mL=0.25 L…

Q: Calculate the number of grams in these quantities. 5.17 x 1021 molecules glucose, C6H12O6 64.6 mL…

A: 1) Since moles = number of molecule / Avogadro's number where Avogadro's number = 6.022 X 1023

Q: When 18.2 hg of water is used in a reaction, how many molecules were reacted? (Assume that the…

A: Here we have told that 18.2 hg of water is used in a reaction. Then we have to tell that how many…

Q: If 0.0222 mol CaCl2 is dissolved in water to make a 0.640 M solution, what is the volume of the…

A: The mole of the solute (CaCl2) present in a one-liter solution is known as the molarity of the…

Q: Distinguish among the terms solution,solute, and solvent.

A: A solution is a homogeneous mixture of two or more substances and the particle size is usually…

Q: Toilet bowl cleaners often contain hydrochloric acid, which dissolves the calcium carbonate deposits…

A: Toilet bowl cleaners contain a number of chemicals present in a specific stochiometric ratio so that…

Q: How do you find the molar mass of a solute? What do you do with it to find the number of moles of a…

A: Explained as follows

Q: Calculating the percent by mass concentration of a solution. 1. What is the percent by mass (m/m),…

A: given, mass of solute = 7.6 g mass of solvent = 83.4 g  % mass = ?

Q: What is molarity? How is it useful?

A: To explain the term molarity and to give its usage.

Q: A student takes a 25.0 mL volume from a stock solution of 1.14 mol L-1 magnesium chloride. How many…

A:

Q: If 23.3 mL of 0.95 M H2SO4 is diluted to a volume of 150 mL, what is the molarity of the resulting…

A:

Q: Determine the mass of a solution of a 7.897 wt % LiI if you needed to provide 0.3894 moles of LiI…

A: wt% = 100 x Mass of solute/Mass of solution Mass = Number of moles x molar mass

Q: Consider this question: What mass of a concentrated solution of nitric acid (68.0% HNO3 by mass) is…

A: The relation between mass percentage of solute in a solution with two different masses of that…

Q: Molarity, is the concentration of a solution expressed in terms of moles solute per liter of…

A: Given-> Weight of CuSO4 = 25.718 gm Volume = 157.5 ml = 0.157 L (1L = 1000 ml)

Q: 65.  A 2.00-L bottle of a solution of concentrated HCl was purchased for the general chemistry…

A: Number of mol of HCl = given mass / molar mass = 868.8 g / 36.46 g/mol = 23.83 mol

Q: 0.22g of calcium chloride (110.98 g/mol) is dissolved into 50mL of water. It is labeled "Solution…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: A 4.07 g sample of a laboratory solution contains 1.85 g of acid. What is the concentration of the…

A:

Q: What is the concentration of an HBr solution if 0.9267 g of HBr are dissolved in enough water to…

A: Given :-  Mass of HBr = 0.9267 g  Molar mass of HBr = 80.91 g/mol  Volume of solution = 79.97 mL or…

Q: If you have a 12.9 mol of AlCl3 in a 12.5 M solution, how many Liters does it make?

A: By using Molarity definition, No. of moles of solute dissolve in one litre of solution is known as…

Q: A 5.44 g sample of a laboratory solution contains 1.85 g of acid. What is the concentration of the…

A:

Q: Limewater, a weak solution of calcium hydroxide, Ca(OH)2(s), is used to detect the presence of…

A: Given:- No of formula units of calcium carbonate in the solution= 8.7 x 1019 No of moles of  calcium…

Q: 0.22g of sodium carbonate (105.9888 g/mol) is dissolved into 50mL of water. It is labeled "Solution…

A: Molarity is the number of moles of solute dissolved in one liter of solution. It is represented by…

Q: For the reaction HCI + NaOH → NaCl + H2O, how many moles of HCl are required to produce 150 grams of…

A: A balanced thermochemical equation shows the stochiometric amounts of reactants required and that of…

Q: In an experiment, a solution is prepared by dissolving 55.0 g NaOH in water until the final volume…

A: Given mass of NaOH = 55 g Volume of solution = 300 ml = 300 × 10-3 L

Q: 0.117 mol of a particular substance weighs 21.9 g. What is the molar mass of this substance?

A: Number of moles = Mass/Molar mass

Q: 2. If 150.0 g of KCI (74.55 g/mol) is dissolved in water to make 250 mL solution, what is the…

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

Q: For parts of the free response question that require calculations, clearly show the method used and…

A: given;   mass of CaBr2 given : 10.0 g  molar mass of CaBr2 : 199.89 g/mol

Q: A chemist prepares a solution by dissolving 0.3 mole of CaCl2 in enough water to make 1000 mL of…

A: Molarity = Number of moles of soluteVolume of solution (in L)Given that 0.3 mole of CaCl2 is added…

Q: A stock sulfuric acid solution contains 98.0% of sulfuric acid, and its density is 1.840 g/mL. How…

A:

Q: Show your work, include units and report the correct number of significant figures for all…

A: 1 mole of tribasic acid requires 3 mole of monoacidic base Net ionic equation is obtained by…

Q: Molarity, is the concentration of a solution expressed in terms of moles solute per liter of…

A:

Q: What information is needed to calculate the molarity of a sulfuric acid solution?

A:

Q: Balance the following equation by algebraic method. Na + H20 NaOH + H2

A: Steps to balance equation by algebric method :  1) first write the given equation and put down…

Q: What mass of solute is required to produce 414.8 mL of a 0.256 Msolution of KBr? g KBr

A: The molarity of the solution =0.256 M or mol/L The volume of the solution=414.8 mL The molar mass of…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".