A.How many grams of chromium(III) oxide, , are present in 2.46 moles of this compound? grams_____ B. How many moles of chromium(III) oxide are present in 2.15 grams of this compound? moles___

Q: What is the mass in grams(a,b)/ name the ionic compound (c,d)/ name the ionic compound containing a…

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Q: 41. Calculate the number of moles of carbon atoms present in each of the following samples. a. 1.271…

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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: How many atoms are present in the following molar quantities of various elements? a) 1.50 moles Fe…

A: Generally, 1 mole = 6.023 x 1023atoms. a) 1.50 moles Fe = 1.50 x 6.023 x 1023atoms = 9.0345 x…

Q: 15. Acetone, formula C.H.O. is an organic compound found in some solvents, and is also produced by…

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Q: 1. a. What is the empirical formula of a compound with the following mass composi- tion: 40.92% C…

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Q: 1. How many grams of C are present in 1.83 grams of carbon monoxide ? grams C. 2. How many grams of…

A: we define moles as mass taken upon molar mass  moles  =mass  takenmolar  mass Here are required to…

Q: 3. It is found a certain sample of a compound contains 23.0g of sodium and 35.5g of chlorine. a.…

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

Q: 1. The number of atoms in 2.0 mol of nitrogen gas, N2, is: a. 1.8 x 1024 b. 2.4 x 1023 c. 1.2 x 1024…

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

Q: 1. Perform the following: a. Write the formula for copper (II) phosphate.. b. Calculate the…

A: Here we calculate the chemical formula using the charge neutral method. Then we calculate molar mass…

Q: Which statement best describes molar mass? a. the mass of 6.02 x 10²3 atoms, which is constant for…

A: The molar mass of a compound is described by the moles concept. According to this concept, one mole…

Q: Prevacid is used to treat gastroesophageal reflux disease (GERD).Thechemical formula of Prevacid is…

A: The question is based on mole concept. we have to calculate the mass of fluorine atoms of carbon.…

Q: a. How many molecules of carbon dioxide are present in 4.99 moles of this compound? molecules 22 b.…

A: 1 mol = 6.022 x 1023 moleculesThus,1 molecule =  mol

Q: Calculate the number of atoms of silver that are in 0.212 moles of silver. (Avogadro's number = 6.02…

A: Avogadro’s number, one mole of any substance (defined as its molecular weight in grams), is equal to…

Q: 1. What do you call to the unit amount of a substance used for measuring large quantities of very…

A: Given:  unit amount of  substance used for measuring large quantities of very small entities such as…

Q: a. How many ATOMS of boron are present in 5.24 grams of boron trifluoride? atoms of boron. b. How…

A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. Also, Number of atoms…

Q: 1. a. How many grams of barium nitrite, , are present in 4.62 moles of this compound? grams b. How…

A: 1. a) Given : Moles of compound barium nitrite i.e Ba(NO2)2 = 4.62 mol.

Q: The formula for sulfur dioxide is . A. How many molecules are in 2.64 grams of sulfur dioxide?…

A: The formula for Sulfur dioxide is :                    SO2 Given:For part Agiven mass of SO2…

Q: 1. How many grams of P are present in 1.22 grams of phosphorus pentachloride ? grams P. 2. How many…

A: The molar mass of phosphorus pentachloride is 208g. 208g of phosphorus pentachloride contains 31 g…

Q: A compound is found to contain 31.42% sulfur, 31.35% oxygen, and 37.23% fluorine by mass. a. What…

A: we have to calculate the empirical formula and molecular formula of the compound

Q: You have a 1.0 g sample of each of the following compounds: CO2, O2, H2O, and CH3OH. a. Which sample…

A: The question is based on mole Concept. We have to determine which of the given compounds  has…

Q: For each reaction given, give the reaction type (RT), predict the products and write a complete,…

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

Q: 1. How many GRAMS of manganese(II) oxide are present in 2.43 moles of this compound ? ??? grams.…

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Q: 3. The average atomic mass of an atom is expressed in c. g/mol a. grams b. amu d. moles 4. Which…

A: Choose the correct option of the following --

Q: many molecules are contained in each compound? a. 1.35 mol of carbon disulfide (CS2) b. 0.254 mol of…

A: Since you have asked multiple questions we are solving first question for you. For remaining…

Q: 37. Calculate the mass in grams of each of the following samples. a. 0.251 mole of ethyl alcohol, C2…

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Q: A sample of bromine has a mass of 40.8 grams. a. How many Br atoms are there in the sample? atoms b.…

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Q: An organic compound was found to contain 54.5% C, 9.2% H, and 36.3% O.  a. What is the empirical…

A: Percentage of carbon = 54.5 %          Percentage of H =   9.2 % Percentage of oxygen = 36.3 % Mole…

Q: 2. The chemical formula for the active ingredient in the anti-inflammatory drug Celebrex is…

A: Given, The chemical formula for the active ingredient in the anti inflammatory drug celebrex is…

Q: How many hydrogen atoms are in 3.25 g of acetic acid, CH3COOH(I)? a. 3.26 x 1022 b. 6.74 x 1022 C.…

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Q: 6. Which one of the following samples contains the largest number of molecules? a. 3.0 moles of C3H8…

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Q: 1. How many grams of B are present in 1.31 grams of boron trifluoride ? grams B. 2. How many grams…

A: The number of moles of an element is mathematically expressed as given below: where: n, m, and M…

Q: 3. Elements B and N form a binary compound BNy When 12 grams of this compound was made from its…

A: Mass of compound = 12 g  Mass of nitrogen = 7 g  We need to determine formula of compound.

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.