Use the References to access important values if needed fc An experiment requires that enough PNF2 be used to yield 19.0 g of fluorine. How much PNF, must be weighed out? Submit Answer 5 question attempts remaining

Q: How many grams are present in 2.4x1045 molecules of H2O2?

A: Given :- number of H2O2 molecules = 2.4 × 1045 molecules  To calculate :- mass of H2O2 (in grams)

Q: i) Calculate the number of moles in 4.79 g of N2O4. ii) How many grams are found in 2.145 mol of…

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

Q: Hg,Cl2 Express your answer as an empirical formula.

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Q: 5. Analysis of 20.0 g of a compound containing only calcium and bromine indicates that 4.00 g of…

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Q: ny moles c

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Q: (Review Topics] [Refe Use the References to access important values if neede A compound is found to…

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Q: Part B Calculate the number of CO2 molecules in 1.19x102 mole of CO2. Express your answer using…

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Q: 5. A sample of iron Fe weighing 14.2g contains how many moles of iron atoms? 00.254 moles O 0.0739…

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Q: How many moles of calcium atoms do you have if you have 8.99 x 1021 atoms of calcium. (The mass of…

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Q: A sample of ammonia, NH3, contains 2.4 x 10° hydrogen atoms. How many NH3 molecules are in this…

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Q: View Policies Current Attempt in Progress A balanced chemical equation contains the term "2Ba(OH)2…

A: Introduction :  Atom can be defined as the smallest unit of matter , it is composed of nucleus and…

Q: What is the percent composition of hydrogen in H2O? (Round your answer to 4 sig figs)

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Q: Lab 5. Counting Molecules 1. Fill in the table C12H22011 NH,CI Mass (g) 1.0015 1.0238 Molar Mass…

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Q: References] Use the References to access important values if needed for this question a. How many…

A: 1 mol of boron trichloride (BF3) contains 1 boron(B) atom and 3 fluorine(F) atoms.

Q: An unknown compound containing tellurium and bromine is analyzed and it is determined that 28.53% of…

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

Q: 7-9. An organic compound is composed of 40.92 percent carbon, 4.58 percent hydrogen, and 54.50…

A: Empirical formula of a compound can be defined as the simplest whole number ratio of all atoms…

Q: A compound is found to contain 37.23 % carbon, 7.827 % hydrogen, ane 54.94 % chlorine by mass. What…

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Q: Unit 8 If you are given 25.38 grams of LiF, how many moles do you have of this imaginary compound? O…

A: Given, mass of Li4F=25.38 gm

Q: 3. A 29.8g sample of a compound is found to contain 10.5g C and 16.7 g fluorine , the rest is…

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Q: Combustion analysis of an unknown compound containing only carbon and hydrogen produced 2.845 g of…

A: Since, Empirical formula is the  smallest whole number of the ratio of atoms in a molecule. Thus,

Q: One 55 g serving of a cereal provides 267.0 mg of sodium, which is 11.6 % of the recommended daily…

A: Convert 11.6% into 100% using mathematical interpretation & convert mass into moles by using the…

Q: Answer each of the following questions. Note that none of them should require difficult…

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Q: Calculate the mass of 1 mole of the following compounds (round each elements to nearest 0.5 AMU,…

A: The molar mass of the elements rounded off is as follows:- Ca - 40.078 = 40 Br - 79.904 = 80 Fe -…

Q: Compound X has a molar mass of 104.01 g mol and the following composition: element nitrogen fluorine…

A: Molar mass = 104.01 g/mol Molecular Formula of X = ?

Q: In a chemical reaction, exactly 2 mol of substance A react to produce exactly 3 mol of substance B.…

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Q: n. What is the empirical formula?

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Q: When heated, KCIO, decomposes into KCl and O,. 2 KCIO, 2 KCI + 302 > If this reaction produced 34.6…

A: The balanced Chemical equation given in the question is -   2KClO3 ------> 2KCl + 3O2   Molar…

Q: The chemical formula for lithlum fluorlde Is LiF. A chemist measured the amount of lithlum fluoride…

A: Molar mass of LiF is sum of atomic masses of Li and F.Atomic mass of Li is 6.941 and atomic mass of…

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

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Q: A student synthesizes tin oxide to create a compound with generic formula SnxOy. She does this by…

A: The mass of tin is = 30.80 g The mass of tin oxide is = 39.10 g The mass of oxygen is = 39.10 g -…

Q: A sample of potassium weighs 68.2g. How many moles of potassium is this (1 mol= molar mass of…

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Q: How many moles of atoms are in 5.00 g of ¹3C?

A: Mole can be define as the ratio of weight of substance taken divided by molecular weight of that…

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

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Q: A compound is found to contain 19.73 % nitrogen and 80.27 % fluorine by weight. To answer the…

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Q: 13. Dichloroethane, a compound that is often used for dry cleaning, contains carbon, hydrogen, and…

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Q: When 3.723 grams of copper are reacted with oxygen, the mass of the copper oxide that is formed is…

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Q: Which sample contains the largest number of chlorine atoms? 10.00g of copper (II) chloride 10.00g…

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Q: How many atoms are present in a 7.31 g sample of copper

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Q: An experiment requires that enough PNCl2 be used to yield 10.3 g of chlorine. How much PNCl2 must be…

A: Answer: 16.84 g

Q: Find the % composition of carbon and hydrogen in 48.00g of CH, if the mass of carbon in the sample…

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Q: 3. What is the mass in grams of each quantity of lactic acid (C3H6O3), the compound responsible for…

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Q: A compound is found to contain 37.23 % carbon, 7.827 % hydrogen, and 54.94 % chlorine by weight. To…

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Q: How many atoms of hydrogen are present in 4.54 g of ammonia? A. 6.64 x 1019 B. 8.20 x 1024 O C. 1.61…

A: We know that , 1 mole of substance contain  = 6.022 × 1023  atoms By using this relation , we can…

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: Use the References to access important values if needed for this question. compound is found to…

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Q: A compound is 54.53% C, 9.15% H, and 36.32% O by mass. What is its empirical formula? Insert…

A: Given Percentage of C= 54.53 % C, Percentage of O=36.32 % O, Percentage of H=9.15% H (by mass) the…

Q: How many valence electrons do atoms of each of the elements have? Sr: valence electrons Xe: valence…

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Q: What is the theoretical yield of Li3N in grams when 12.9 g of Li is heated with 35.2 g of N₂? Round…

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Q: 6. The percent composition of a compound is 35.20% phosphorus and 64.80% fluorine. What is the…

A: Given  % of P     = 35.20 %  % of F     = 64.80 %  Empirical Formula  = ?

Q: Element is Gold use 6.02 x 1023 for Avogadro's number or you may be counted wrong!!! 1. What is the…

A: Avogadro number - 6.02 × 1023  1) Symbol for element gold is Au  2) Molar mass for gold is 197g/mol…

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.