QUESTION 14 How many moles of benzene C6H6 are present in 390 grams of benzene. 5 mol 4.3 mol 6.7 mol 8 mol

Q: QUESTION 8 If 0.153 L of 0.104 M Na2SO4(aq) is combined with 0.175 L of 0.209 M NaCl, what is the…

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Q: The molarity of a solution prepared by diluting 43.72 mL of 1.005 M aqueous K2Cr2O7 to 500 mL is __.…

A: M1 = Molarity of first solutionM2 = Molarity of second solutionV1 = volume of first solutionV2…

Q: How many H20 molecules are there in 3 moles of H20 sample? O 6.02 x 1023 molecules O 2x 6.02 x 1023…

A: Given: Moles of water, H2O = 3 mol.

Q: How many grams of H 2 are needed if we want to make 95.44 grams of NH 3 by the reaction N2 + 3H2 2…

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Q: An aqueous solution of CaCl2 weighs 6.3 kg. The solution has 8.5 moles of CaCl2 present in it. The…

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Q: How many moles of methane (CHA) are in 20.0 grams of methane? 20.0 moles 16.0 moles 1.25 moles

A: Moles is defined as the amount of substance that contains same number of particles as contain in 12…

Q: Magnesium metal reacts with 0.100 L of 0.450 M hydrochloric acid to produce magnesium chloride and…

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Q: Question 6 Which of the following solutions is the most dilute? O 0.75 M NaOH O 12 M NAOH O 4.2 M…

A: NOTE:    you have asked multiple question ,As per guidelines we are supposed to answer first…

Q: Question 14 How many molecules are present in 0.300 mol of HI? O 2.43 x 1024 molecules O 1.81 x 1023…

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Q: Question 1 What is the mass of sodium nitrate in a 400-gram sample of aqueous sodium nitrate…

A: Answer.  We need to use mass by mass percentage formula to calculate the mass of sodium nitrate.

Q: Question 71 What is the molarity of the solution if 7.25 g of NaBr is dissolved in 2.0 L of…

A: Molarity can be defined as moles of solute present per unit volume of solution. Here we can…

Q: QUESTION 18 What is the molarity of the solution prepared from 10.0 mL of a 5.0 M KBr solution to…

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Q: you have an aqueous solution of calcium nitrate, what are the ions in solution?     2Ca+ + NO3-…

A: Mass of 1 mole = molar mass 1 mole = 6.022 x 1023 entities

Q: Question: Calculate the molarity of the following solutions: 2.50 L of solution that contains 0.860…

A: Volume of solution = 2.50 L Number of moles of solute = 0.860 mol Molarity= ?

Q: Question 14 Which expression below show the correct method of determining the percent composition of…

A: Na2CO3 contains two sodium atoms.

Q: The molar mass of water is 18.0 g/mol. How many hydrogen and oxygen atoms are present in 10.0 g of…

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Q: Question 2 A 50.0 mL sample of 0.108 M H2SO4 is diluted to 250.0 mL. What is its new molarity? O a.…

A: Given, Before dilution: (old solution) Molarity of H2SO4 solution (M1) = 0.108 M  Volume of H2SO4…

Q: Question 11 What is the molar mass of (NH4)2SO4? O 132.02 g/mol O 114.11g/mol O 118.01 g/mol O…

A: Molar mass of the compound can be calculated by summing up masses of all the elements .

Q: What is the molar mass of ascorbic acid, C6H8O6?   Question 18 options:

A: Molar mass of a molecule is equal to the sum of molar masses of all the constituent atoms.

Q: find the mass (g) 35.4 ml of 0.399 M FeCL3

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Q: What is the volume needed to make a 9.25 M solution using 6.78 mol NaCl? O 43.8 L O 0.243 L O 14.6 L…

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Q: How many molecules are in 29.3 g of beryllium hydroxide (Be(OH)2)? O 2.1 × 10¬21 molecules O 4.1 ×…

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Q: Question 15 Calculate the molar mass of a compound if 0.457 mole of it has a mass of 430.0 g. 0.941…

A: A question based on mole concept. Number of moles and mass of a substance are given that are to be…

Q: Question 3) A 3.17 m solution of CaCl2 in water has a density of 1.24 g/mL. What is the molarity?…

A: Step 1:Molarity : the number of moles of solute present in the one liter of solution Units moles/L…

Q: What volume in mL of 0.220 M HBr solution is required to produce 0.0210 moles of HBr?

A: Number of moles = Molarity (mol/L ) × Volume( L)

Q: Find the mass (g) 35.4 ml of 0.399 M FeCI3

A: Given : Concentration of FeCl3 = 0.399 M And volume of solution = 35.4 mL Since 1 L = 1000 mL

Q: Question 3 The recommended daily intake of Vitamin C (ascorbic acid ) in adults is 90 mg. Given the…

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Q: Hey all! Some help on molarity of solutions would be great. Example question below - thank you.…

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

Q: Question 53 How many moles of water (H,O) are in 35.0 grams of water? A 18.0 moles 1.94 moles 35.0…

A: We have to calculate the moles of water

Q: QUESTION 39 What is the molarity of an 12 M HC,H,O, solution prepared by diluting 50. m L of…

A: Answer of this question :-  Molarity :- Number of mole of solute present in one litre of solution…

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.