1. Which of the following represents the correct subscript ratio of Na in Na2SO4?   Answers: 2 moles Na : 1 mole SO4   2 moles Na : 1 mole Na2SO4

Q: How many moles are in 208 g of CuCl2? 0.646 moles 2.80 x 104 moles CuCl2 2.10 moles 1.55 moles CuCl2

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Q: Determine the mass in grams of 1.6 x 10-3 mol glucose C.H12O.

A: Given, number of moles of glucose =1.6×10-3 moles =0.0016 moleswe are asked to calculate the mass of…

Q: How many moles of Si are there in a sample of Si that contains 3.74x1024 atoms? moles

A: 1 mole of any element contains 6.02 * 1023 atoms of that molecule. Given number of atoms of Si…

Q: Calculate the number of moles in the following quantities: | Correct. 1.94 g NaHCO3 0.0230 mol the…

A: 1) Since molar mass of NaHCO3 = Atomic mass of Na + Atomic mass of H + Atomic mass of C + Atomic…

Q: UESTION 3 alculate the molar mass of potassium chloride, KCI. 6.745 g/mole 54.55 g/mole 19.00 g/mole…

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Q: An oxide of nitrogen contains 30.45 mass % N and has a molar mass of 92.02 g/mol. What is the…

A: Given :-  % composition of N in nitrogen oxide = 30.45%  molar mass of compound = 92.02 g/mol  To…

Q: 38.3 g KNO3 Express your answer in moles to three significant figures. mol KNO3 Submit Request…

A: Given,  Mass of potassium nitrate(KNO3) = 38.3 g Number of moles of KNO3 = ?

Q: Balance each of the following equations. Please answer 1-5. 1. LiNO3 + Li --> Li2O + N2 2.…

A: solution                Given the unbalanced chemical equations Find the balance chemical equation…

Q: Finding mole ratios from chemical formulae This is the chemical formula for nickel tetracarbonyl (a…

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Q: 5. A compound with an empirical formula of CFBRO and a molar mass of 253.8 grams per mole. What is…

A: We have to predict the molecular formula of given compound.

Q: To measure the amount of chlorine in a well-boring fluid, an analytical chemist adds 0.3100M silver…

A: The reaction taking place is given as, Given: Mass of AgCl produced = 2.49 g. And mass of sample…

Q: A mass of KHP is measured at 0.3051g and contains ______ moles. Group of answer choices

A: KHP means potassium hydrogen phthalate. The molecular formula of KHP is C8H5KO4.

Q: portant values if needed for this question. 1. How many GRAMS of boron are present in 2.07 moles of…

A: Solving only the first question as per guidelines. if u want all of them answered kindly post them…

Q: what is the percent by mass

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Q: How many moles of N2 (MW = 28.02 g N2) are in 100.0 g N2?(Express as "mol N2") 100.0 g…

A: The equation for finding number of moles and the usual unit corresponds to each term is given below.…

Q: 4. Compare the total mass of the reactants with the total mass of the products: Total Mass of the…

A: Given reaction is,  K2CrO4 (aq) + Pb(NO3)2 (aq) →2KNO3 (aq) + PbCrO4 (s)

Q: is the A:B ratio just a place holder for the unknown compound can you use other variables in place…

A: Answer: This question is based on the fundamentals of crystal structure, where different type of…

Q: 10) Calculate the moles of magnesium ( Show your calculation

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

Q: [Review Topics] [References] Use the References to access important values if needed for this…

A: In the given question, we have to find number of carbon atoms in first and moles of bromine in…

Q: D Question 1 10 pts Given this equation: 2 H2 + O2- 2 H20, how many moles of O2 are needed to yield…

A: 1) Reaction: 2H2+O2→2H2O 2) Moles of H2O=3.6 moles 3) 2HgO→2Hg+O2 4) Moles of HgO is 11.3 moles.

Q: 6. How many moles of particles are present upon dissolving one mole of each of the compounds below?…

A: upon disolving ionic compounds dissociates into its ionic form where as non ionic do not diisociate…

Q: According to the following reaction, how many moles of iodine are necessary to form 0.224 moles…

A: Hydrogen (g) + iodine (s) → Hydrogen iodide (g) H2 (g) + I2 (g) → 2 HI (g)   Moles of Hydrogen…

Q: CaCl2  +  Na2CO3  ---> Given 74.3 g of CaCl2 and 5.94 x 1023 formula units of Na2CO3 , how may…

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Q: What is the empirical formula of strontium chloride in problem 5?   Sr Cl Mass of element (in g) 1.…

A: The answer of following question is given below.

Q: How many moles are equal to 25.8 grams of ethane (C₂H6)?

A: Given data 25.8 g C2H6

Q: Determine the quantity of moles of hydrogen in 3.06 x 10-3g of glycine , C2HSNO.?

A: Please find your solution below : Mole is a measure of amount of any substance.  It is defined as…

Q: More commonly, the empirical or simplest formula of a compound is determined by finding the masses…

A: Answer:Number of moles of a substance is always equal to the ratio of its mass and molar mass,…

Q: How many moles of hydrogen are in 3.06 x 103g of glycine , C2H5NO2?

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Q: How many moles are in 22.0 g of MgCl2? VE ΑΣΦ Submit Previous Answers Request Answer ? X Incorrect;…

A: Mass of MgCl2 = 22.0 g

Q: 5. When propane gas burns, it reacts with oxygen to yield carbon dioxide and water. 1 mole C3Hs+…

A: Balance the chemical equation as follows:

Q: Calculate the mass percent of 0 in ClO,F.

A: Given compound is ClO3F  Molar mass of Cl = 35.5 g/mol  Molar mass of O = 16 g/mol  Molar mass of F…

Q: The correct Empirical formula for this compound is Select an answer and submit. For keyboard…

A: Mass of Mg + Mass of O = Mass of product Also, No of moles = Mass / Molar mass

Q: QUESTION 3: Show your solutions for all questions below: 3a. Which mass is greater? 34.0 g of…

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Q: Hydrochloric acid (75.0 mL of 0.250 M) is added to 225.0 mL of 0.0550 M Ba(OH), solution. What is…

A: Very good the work you have done and all steps you followed are correct. The answer you have for…

Q: What is the percent of H, P, and O in the formula H3PO4? H _____ % P ______ % O ______ %

A: To solve this problem we will use molar mass of each element and molar mass of H3PO4  Since we know…

Q: Na + H₂O --->_______H₂ +. NaOH is correctly balanced using the smallest whole number coefficients,…

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Q: * 00 T F %#3 } H. 7. 6. D. 5. 4. E. MacBook Pro Q Search or enter website name OHO OHO molecular…

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Q: A sample is found to contain 66.8 % NaHCO, by mass. What is the mass of NaHCO, in 4.25 g of the…

A: Mass by mass percentage (w/w) When mass of solute in a solution is expressed in grams of solute in…

Q: What is the empirical formula for a sample containing 81.70% carbon and 18.29% hydrogen? Multiple…

A: Empirical formula represents the simplest whole number ratio of the atoms present in the given…

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.