Calculate the mass% composition of each of the following (show your work below)   a) 6.38g of N and 2.12g of C   1) Write the % of C   2) Write the % of H

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: 2- Calculate the empirical fomula of the compound composed of 38.67 % C, 16.22 % H, and 45.11 %N by…

A: To calculate the empirical formula we have to calculate the number of mole of each elements in the…

Q: 1. a) Determine the empirical formula of a compound with the following percent composition: 55.80 %…

A: empirical formula  of a compound is simplest positive number of atoms in compound

Q: What quantity in moles of potassium atoms do you have if you have 7.50 x 10²² atoms of potassium.…

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Q: 24) Which of the following compounds contains the largest number of atoms? A) 1.00 mole of H,PO, C)…

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Q: Part A Upon combustion, a 0.8009 g sample of a compound containing only carbon, hydrogen, and oxygen…

A: The combustion reactions are a type of chemical reactions where hydrocarbons react with oxygen and…

Q: A 0.660 g sample of a pure hydrocarbon was completely burned. The products were 1.28 g CO2 and 0.421…

A: Given :  Weight of hydrocarbon = 0.660 gm  Weight of CO2 formed = 1.28 gram  Weight of H2O formed =…

Q: What is the percent by mass of H in isobutyl benzene (C10H14)? The molecular weight of carbon is…

A: Given values: The molecular weight of carbon is 12.0107 g/mol. The molecular weight of hydrogen is…

Q: There are 1.2 x 1024 atoms of carbon in a sample of aluminum acetate, Al(C₂H3O2)3. How many moles of…

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Q: (Calculate the number of grams in one mole of CaS04.7H20, (Ca = 40, S=32, 0=16, H=1 .A g/mol 136 .B…

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Q: The unknowns are a mixture of ferrous ammonium sulfate, FeSO4(NH.)2SO4 6H20, and ammonium sulfate,…

A: For calculating the mass of FeSO4 (NH4)2SO4.6H2O and (NH4)2SO we need to know the mass of each…

Q: empirical formula of

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Q: 1. What is the mass of exactly one mole of HO3Br? Answer to the nearest 0.01 g.   2. What is the…

A: Given, Number of moles of HO3Br = 1 mole      Required,                             1. Mass of…

Q: Question 29 of 30 Which of the following contains the most moles of atoms? A) 1 g of helium B) 1 g…

A: Moles of elements can be determine by the following formula Moles =   mass of elementmolqr mass

Q: If the scientist did another trial with 10 mol of N2 and excess H2, how many moles of NH3 would she…

A: Given data contains, Moles of nitrogen is 10 mol. Desired: ___ moles of ammonia. The balanced…

Q: what is the percent composition of C in C3H8?

A: • Steps to calculate percent composition:- Find the molar mass of all the elements in the compound…

Q: 1) How many moles of carbon are in 2.7 moles of ethyl alcohol ( C2H5OH) 2) How many moles of Na are…

A: Note: According to our guidelines we are supposed to answer only one question.  Kindly repost other…

Q: Pls Pls help me solve the following question, explain it and really make sure its correct 1000000%…

A: Step 1: Finding out the moles of carbon dioxide and water produced…

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: 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: A compound contains C, H and O as the elements.   A 20.0 g-sample is comprised of 1.34 g H and also…

A: Given that the mass of C and H in a compound of mass 20.0 g is 1.34 g and 8.00 g respectively. Mass…

Q: How many grams of O are in a sample of AgNO3 with 4.0 x 1024 atoms of Ag? [grams oxygen Hint: Since…

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Q: Calculate the molar mass of the following compounds. Please answer 1-2 and show your work. 1.…

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Q: 9. What is the percent composition by mass of aluminum in Al (SO4)3 (gram 15.8% formula mass = 342…

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Q: A sample of ethanol (C2H6O) contain 3.024 g of hydrogen. How many moles of carbon in the sample?…

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Q: A compound was analyzed and found to contain 66.68% C, 11.11% H, 22.22% O If the molar mass is 144.…

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Q: What is the mass percentage of O in C,H,O,? 42.051 % C 8. 9. +/- x 100 3. 2. 4. 7,

A: Given: C3H8O2

Q: How many atoms of sulfur are in a 2.500 mole sample of pure sulfur? * 1.505 x 1024 5.69 x 10-24 110.…

A: Since you have posted multiple questions, we will provide the solution only to the first question as…

Q: 39. Calculate the number of molecules present in each of the following samples. a. 4.75 mmol of…

A: To solve this problem we have to calculate the number of molecules of the given sample .

Q: Which of the following has the empirical formula CH2 ? A) C6H6 B) C2H6 C) C2H4O D) C6H12 E)…

A: Empirical formula of any compound is the formula of the compound which has number of atoms of each…

Q: How many moles of Al2(CO3)3 contain 2.63x1025 atoms of oxygen (O)? a) 393 moles b) 4.85 x 1046…

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

Q: ste and smell) natural flavor based on its elementa tion. C 58.80%, H 9.87%, O 31.33% 0₁ H9.791.958…

A: If mass of compound is 100 g. Mass of C = 58.80 g Moles of C = 58.80/12 =4.90 mol Mass of H = 9.87 g…

Q: What is the molar mass of (NH,),Cr207? 300 g a 250 g 266 g C 252 g

A: Given compound is (NH4)2Cr2O7  Molar mass of N = 14 g Molar mass of H = 1 g  Molar mass of Cr = 52 g…

Q: What is percent composition of O in the image below

A: Step 1 : Solution Given,Compound = (NH4)2Cr2O7We know, molar mass of : Nitrogen(N) = 14.01 g/mol ,…

Q: Please check my work. Given: Aluminum is 38.00% by mass, Silicon is 13.18% by mass, and Oxygen is…

A: The answer is given below:

Q: Calculate the molar mass of the ff: 4. (NH,), HNO, 5. Mg(NO3)₂ 1. Hg (OCN) 2 C3 H5N 3 Og C6H8 O 6 2.…

A: Molar mass: The mass of one mole of a substance, measured in grams, is known as its molar mass.…

Q: A. Calculate the molar mass of each substance. 1. NaCl 2. O2 3. O 4. CeH1206 5. (NH4)3PO4 6. Ag

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Q: If Avogadro's no. is taken as 'N' then 2 moles of H20 will have how many atoms of H?

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Q: can I get more infor on how to find the empirical formula and all the steps in between?

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Q: How do the percent compositions for 36 and 48 compare? A B C D CH 8 has a higher percentage of…

A: We will find the percent composition of both Carbon and hydrogen in both compounds. Percent…

Q: Which of the compounds have the same empirical formula? (Choose all that apply.) O CH4 O C2H4 O C4H6…

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Q: Please show all work. 1. Find the mass of 4.52 x 10^23 particles of each of the following: N2…

A: Hello. Since the question contains multiple parts, the first three parts are solved. In case the…

Q: 1. Which element comprosing Mg(OH)2 has the highest % by mass? 2. Determine the % composition of…

A: Molar mass of Mg(OH)2 = 58.32 g/mol  Atomic mass of Mg = 24.30 g/mol  Atomic mass of O = 16.00 g/mol…

Q: A. Find the molar mass of (Na2B407 • 10H2O). Show work B. Find the mass of oxygen in a 2.25-gram…

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

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.