What is the molar mass for the Dinitrogen Trioxide?   A. 30.0 grams/mole   B. 150.0 grams/mole   C. 76.0 grams/mole   D. 74.0 grams/mole

Q: 1. Distinguish between the following pair of terms; a. Molarity and normality b. Mole and Avogadro…

A: A) One of the main differences between the normality and molarity of a solution is that normality…

Q: How much water would 29.21 grams of an insoluble sample with a density per of 4.35 g/ml displace?

A: Given, the mass of the insoluble sample = 29.21 g The density of the sample = 4.35 g/mL We have to…

Q: Calculate the molar mass of each substance. (show solution) H3PO4 CaCO3 (NH4)2SO4 C4H9O2

A: Molar mass means the masses of all the atoms in the moleculeadded together.

Q: Determine the mass of 3.83% AgNO3 solution that contains 29.8 g of AgNO3 _____g solution

A: Molality is the way to express the concentration of any solution. It can be defined as the number of…

Q: The mass fraction of B in a solution is 0.17. Calculate, in g, the mass of the solution that…

A: We have to calculate the mass of solution.

Q: how may moles is in 26.8g of water?

A: Molar mass of water = 18.01528 g/mol Given mass of water = 26.8 g No. of mol is given by: No. of…

Q: 223.83 g of mercurous sulfate is dissolved in enough water to form an unknown concentration of…

A: Given: Atomic mass of Hg = 200.59 g/mol Atomic mass of S = 32.065 g/mol Atomic mass of O = 15.99…

Q: What volume of a 1.1M solution can be prepared with 100g of magnesium nitrate?

A: In this question, we want to determine the volume of the magnesium nitrate.  How we can determine,…

Q: H2SO4 is the most widely used industrial chemical on Earth and will be required at least to some…

A: Given;

Q: You need to make one Liter of a 60 g/L glucose solution for a glucola test. Provided on the counter…

A: Volume of solution = 1 L   Density has units of g/L.  Density of glucose solution = 60 g/L…

Q: A solution containing 40.0 mL of ethanol and 25.0 mL of water. solvent solute Answer Bank water…

A: Given that :-    1)  40.0 mL of ethanol and 25.0 mL of water   2)  6 g of AgNO3  and  15 mL of water

Q: What is the number of moles of HCl not consumed by tablet? What is the number of moles of HCl…

A: Given, No. of moles of HCl used to dissolve tablet = 50.0 mL or 0.05 L Molarity of HCl = 0.500 M No.…

Q: Complete the table below and show the complete and correct solution. a. 105.9g/mol b. 100.9 g/mol…

A: Graham's law:

Q: a company is making a salt nacl solution for medical use each bottle contains 200 ml of salt…

A: The mass of solute in gram present in 100 mL of solution is known as the mass percent concentration…

Q: How many moles are contained in 0.206 g of potassium sulfate Select one: a. 1.52 x 10° mol b. 846…

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

Q: In a certain medical test designed to measure carbohydrate tolerance, an adult drinks 7 ounces of a…

A: Given values: Total amount of solution = 7 ounces Let the amount of 30% glucose solution be 'x'

Q: Evaporation of freshwater from oceans, formation of sea ice and ice bergs all contribute to causing…

A: A. increase

Q: Muriatic acid, an industrial grade of concentrated HCl, is used to clean masonry and cement. Its…

A: Given: Muriatic acid  is an industrial grade of concentrated HCl. Weight of HCl = 65.6 g…

Q: How many grams of HNO3 are in 61.1 g of a solution that 30.0 % HNO3 by mass?

A: Use mass% formula to calculate the mass of solute HNO3 in its solution:

Q: Standard vinegar solutions are about 5% acetic acid by mass. What is the molarity of a 5% vinegar…

A: Vinegar is aqueous solution which contains small amount of acetic acid. Generally vinegar is used as…

Q: What is the volume in liters that is needed to create a 2.3 M solution with 2.5 moles of Fe(OH)2?…

A: Given data molarity of solution = 2.3 M mole of solute , Fe(OH)2  =  2.5 mole

Q: What is the volume of C needed to prepare 50.0 mL of Solution C? p of 0.785 g/cm³ 60.094 g/mol…

A: Density of C = 0.785 gmcm3 Molar mass of H2O = 18.016 gmmol Molar mass of C= 60.094 gmmol Volume of…

Q: What volume of 2.0 M sulphuric acid is needed to prepare 100 mL of 0.5 M sulphuric acid? Type only…

A: • The values provided in the question are:-        i) Initial concentration of a sulfuric acid…

Q: The lab instructor needs to prepare 15 sets of solutions for a chemistry lab.  Each set must have…

A: Answer:- This question is answered by using the simple concept of calculation of mass using the…

Q: What is the volume in liters that is needed to create a 2.3 M solution with 1.6 moles of Fe(OH)2?…

A: Molarity  is the amount of a substance in a certain volume of solution. Molarity is defined as the…

Q: How much fish paste in grams will you add to 1.5 kg mix vegetable to be able to come up with a…

A:

Q: How many moles of LiBr are present in 375 mL of a 0.175 M LiBr solution?

A: Given :-  molarity of LiBr solution = 0.175 M  volume of solution = 375 mL  To calculate :-  no.of…

Q: A chemist needs 1.25 moles of sugar to dissolve in 1 liter of water. How many grams of sugar will…

A:

Q: A chemist samples a river's water to measure the amount of fertilizer runoff from the area farms. In…

A: Given , mass of Nitrate (solute) = 562 microgram  = 562 X 10-6 gram (As , 1 microgram = 10-6 gram)…

Q: 30. Determine the number of moles of FeCl3 present in 1.789 L of a solution of 4.430 M FeCl3.…

A: 30. Given that : The volume of FeCl3 solution = 1.789 L The molarity of FeCl3 = 4.430 M We have to…

Q: solute

A:

Q: A glucose solution is frequently used as an intravenous (IV) solution to supply hydration and/or…

A: We have to calculate the volume of glucose used.

Q: calculate the molarity of a solution made by adding 5.53 g of CaCl2 to enough water to create a…

A: The molarity expression is as follows,

Q: Calculate the volume of 0.500 M KBr solution that would contain 0.0333 g of KBr.

A: Given : concentration of KBr = 0.500 M Mass of KBr = 0.0333 g Molar mass of KBr = Atomic mass of K +…

Q: When making a solution, the container gets hot. This is an example of an endothermic process O…

A:

Q: Lead is a toxic metal that affects the central nervous system. A Pb-contaminated water sample…

A: Percent mass of a solute is related to mass of a solution as shown below:

Q: Concentrated sulfuric acid is 18.0 M and has a density of 1.84 g/mL. Calculate the percent mass of…

A:

Q: How many moles are in 18.5 g lead?

A: No of moles = WEIGHT /MOLECULAR WEIGHT  n=W/M

Q: Concentrated hydrochloric acid is usually available at a concentration of 37.7 percent by mass. What…

A:

Q: A chemist mixed 130 ml of an 25% saline solution with 80 ml of a 4% saline solution. Find the…

A: The resulting mixture's proportion is given by

Q: How many moles are in 2.5 g of N2? 0.089 moles 0.18 moles 1.3 moles 11 moles

A: We have give that  Mass of N2 = 2.5 g  And we have to find number of moles in 2.5 g of N2

Q: How many grams of glucose must be added to 25.9 g of water to prepare a 16.2% by mass glucose…

A:

Q: A 20.0% solution of Kcl has a mass of 400 grams. What mass of KCl is contained in this solution?

A: Since ,           % by mass=mass of KCL in solutionmass of solutionx100%

Q: Convert the ug/ml above to moles/L (molar concentration)    You are asked to make a 1:10 dilution…

A: Stock solution — 3.5 ml To make 1:10 dilution Final volume = 10 ml

Q: Calculate the volume in mL of a solution that contains 1.82 moles of KCl if the concentration of…

A:

Q: Convert your answer to scientific notation (i.e. ## x 10x mg) = Convert a 3.5% NaCl solution to…

A: Given: Concentration of NaCl in %(m/v) = 3.5 %.

Q: You have 100. g of a solution that is 12% KCl by mass. How many grams of KCl are in the solution?

A:

Q: A fluoridated water supply contains 3 mg/L of F-. What is the maximum amount of Ca 2+, expressed in…

A: Let S be the solubility of CaF2. Now let us express the amount of Fluoride in mol/L (M), it's…

Q: How many moles of CaF2 are present in 0.025 L of 0.350 M CaF2 ? A) 0.00125 mol B) 0.0250 mol C)…

A: Molarity is defined as the moles of a solute per liters of a solution. Molarity is also known as the…

Q: CALCULATIONS Set up each problem completely and SHOW UNITS. Cancel the units when you do the…

A: Given that, Mass of KH2PO4 sample = 0.0900 g = 90 mg Volume of water = 250 mL = 0.25 L 1)…

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.