1-How do you determine the mass of a substance if you know the moles and molecular mass.

Q: 8. Determine the number of CH₂Cl2 molecules in 42.463 g of CH₂Cl₂. The molar mass of CH₂Cl2 is…

A: Avagadro's law states that 1.0 mole of any substance Avagadro number () of species.Number of moles =…

Q: 1. (question not found in the book) Provided you are given a balanced chemical equation: a Where do…

A: Chemical equations represent a chemical reaction. The reactants are written on the left side and…

Q: I figured out that .0068 moles CaCl2x2H2O are present in 1.00g CaCl2x2H2O. My next question is "How…

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Q: How many moles of atoms is in this elemental sample? 1.1×1022 Ag atoms

A: Given, Number of atoms of Ag = 1.1×1022 atoms Moles of Ag atoms = ? Note: Avogadro's number = 6.022…

Q: 1. identify 4 different chemical compounds. A.) calculate the mole mass of each chemical compound.…

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Q: 1. Ammonium Nitrate is an unstable explosive that also happens to be highly soluble in water. It is…

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Q: a. How many carbon atoms are in the sam b. How many hydrogen atoms are in the s c. How many oxygen…

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Q: need

A: We will use stoichiometry of the reaction

Q: 16. A chemist has 2.50 grams of magnesium. How many grams of F2 molecules must a chemist have to…

A: Mass of magnesium = 2.50 g Molar mass of magnesium = 24.305 g/mol Molar mass of F2 = 38.0 g/mol Mass…

Q: D. Solve the following. Show your solutions. Attach a plcture of your solution after each number.…

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Q: A sample is found to contain 0.650 mole of a chemical substance. a. How many atoms are present if…

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Q: The principal components in air are oxygen, nitrogen, argon, and carbon dioxide. Air is…

A: The air is composed of 78% nitrogen gas, 21% oxygen gas, 0.93% Argon gas and 0.04% carbon dioxide…

Q: Please help me solve the following question, explain it and pls pls make sure everything is correct,…

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Q: Consider a sample of carbon tetrafluoride that contains 1.09 × 10²⁴ atoms of fluorine. 1.) Using…

A: In international system of unit, there are seven basic units. Out of those seven unit Mole is one of…

Q: A: What is the correct chemical formula when Co4+ combines with S2- ?  B:  How many ATOMS of OXYGEN…

A: A: What is the correct chemical formula when Co4+ combines with S2-?

Q: Calculate the number of moles for each of the questions below. Use the space on the right to show…

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Q: a formula unit of

A: Since you have asked multi parts we will solve the first three subparts for you. If you want any…

Q: D. Calculate the mass (g) of the following samples. 25) 238 moles of lead 26) 1.54 x 10° moles of Zn…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: (question not found in the book) Provided you are given a balanced chemical equation: Where do you…

A: Answer: Balancing of chemical equation is based on the law of conservation of mass which states that…

Q: You are working in a science lab that is analyzing the contents of cow manure. You discover a novel…

A: Empirical formula is the simplest formula of the compound, which is the ratio of subscripts of the…

Q: Sort the molecular . That is, select Group 1 next to all the compounds with the first empirical…

A: Here we are required to find compound which have same empirical formula.

Q: . The formula for ibuprofen is C3H1O2. How many moles of ibuprofen are present in 250.0-mg tablet?

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

Q: A chemist weighs 50.0 grams of solid NaOH. a) How many moles of NaOH are in the sample? [ Select ]…

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Q: 1. How many moles is 8.1 x 10^24 molecules of HCN? SHOW YOUR WORK!

A: Number of molecule given = 8.1 × 10^24molecule

Q: If the student used 3.103 g of MoOs, how many moles of MoO3 were present?

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Q: Hi, I was wondering if you could help me with this question. How do I find out specificaly how many…

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Q: An unknown compound comprised of osmium and chlorine is 40.11% osmium by mass. a. If you assume…

A: Hello. Since the question contains more than three sub-parts, the first three sub-parts shall be…

Q: Directions: 1. Read the following substances commonly found in your homes, know its uses and its…

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Q: osmium by mass. a) If you assume 100.0 g of the compound, what is the mass in grams of osmium that…

A: Since you have posted a question with multiple sub- parts, we will solve first three sub- parts for…

Q: Sandwiches Suppose that the following ingredients are available to make meat and cheese sandwiches.…

A: Each sandwich requires two bread slices, one slice of cheese and one slice of meat.With the number…

Q: Does one mole of K and one mole Ti have the same amount or a different amount of atoms? Explain your…

A: Avogadro number = 6.02×1023

Q: N2(g) + 3 H,(g)→2 NH;(g) How many moles of NH, can be formed from 3.0 mol of N, and 6.0 mol of H,?

A: Given reaction is : N2 (g) + 3H2 (g) ---------> 2NH3 (g)  Moles of N2 = 3.0 mole  Moles of H2 =…

Q: Which of the following is the correct definition of a mole A) the amount of a substance that…

A: Given  Which is correct = TO BE DETERMINED

Q: A compound is 80.0% carbon and 20.0% hydrogen by mass. Assume a 100.-g sample of this compound. How…

A: Number of moles is calculated by dividing the given mass with molecular mass A compound contains…

Q: A flask contains 3.75 moles of hydrogen gas. How many hydrogen molecules are present in the flask?…

A: We are having 3.75 moles of hydrogen gas. Hydrogen gas exists as H2 molecule.

Q: 3.01 x 1023 molecules of sucrose is _ _ _ _ _ _ _ _ _ _ _ _ _ moles of sucrose.  Why don’t you need…

A: Given : Number of molecules of sucrose = 3.01 X 1023 molecules.

Q: You need to weight 8.51 moles of sodium into a flask. How many grams of sodium should you carefully…

A: Given that, mass of Na=? moles of Na= 8.51 moles

Q: How many moles of atoms are contained in each of the following? a.) 7.50 x 10^24 I2 Molecules b.)…

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Q: 2.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A: Empirical formula :- The formula which gives the simplest whole number ratio of atoms of various…

Q: Consider a flask containing a 254 g sample of carbon dioxide? Determine (a) number of moles of…

A: Note - Since you have posted a question with multiple sub-parts, we will solve first three…

Q: Suppose that a compound containing copper and chlorine contains 0.01044 moles of copper and 0.01517…

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Q: Using the information from number 4, calculate the empirical and molecular formula for the scenario…

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Q: Suppose you have two samples that are equal in weight, 11.8 g Ti and 11.8 g Fe,O,. Calculate the…

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Q: 1. How many iron atoms are there in 0.6 mol of iron? 2. Calculate the mass of a 0.8 mol of sulphur…

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

Q: How many oxygen atoms are on the right-hand side of the following chemical equation? 4FES2(s) +1102…

A: Number of Oxygen atoms means number of O atoms present.

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.