1.Ibuprofen is a compound used in painkillers. When a 2.174 g sample is burned in an excess of oxygen, it yields 6.029 g CO2 and 1.709 g H20 as the sole products. (a)What is the percent composition, by mass, of ibuprofen? (b) What is the empirical formula of ibuprofen?

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A: Given: 6.1 × 10²⁵ molecules of CO₂ are produced in a combustion reaction.  To determine : The mass…

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A: a). Given: The moles of C3H7OH = 0.0146 mol. The molar mass of C3H7OH = 60.09 g/mol.

Q: Iodine is prepared both in the laboratory and commercially by adding Cl2(g) to an aqueous solution…

A: Given reaction is

Q: A compound is 53.31% C, 11.18% H, and 35.51% O by mass. What is its empirical formula?

A: Given,Mass percentage of C = 53.31 %Mass percentage of H = 11.18 %Mass percentage of O = 35.51 %This…

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A: A.M.U is defined as mass of One atom.

Q: Suppose that 6.71 × 10³ g of titanium(IV) chloride is reacted with 2.45 × 10° g of oxygen. Calculate…

A:

Q: perchlorate is a colorless , crystalline substance whose composition is 28.2 % K, 25.6 % Cl, and…

A: Given, Element %  of  K = 28.2 % = 28.2 g Element %  of  Cl = 25.6 % = 25.6 g Element %  of  O =…

Q: Question attached

A:

Q: The chemical formula for the antidepressant fluoxetine is C₁₇H₁₈F₃NO. What is the mass in grams of…

A: Given data: The molecular formula of fluoxetine is C17H18F3NO. The given moles of fluoxetine is…

Q: the mineral gibbsite has the formula al(oh)3. what mass in,in kg, of al is present in 2.9 kg of…

A: Given, mass of gibbsite,  Al(OH)3  = 2.9 kg = 2900 g Thus, moles of gibbsite can be calculated as,…

Q: The empirical formula of a compound is X5Y7Q by mass and the molecular formula weighs 162.1 g/mol.

A: Let us the consider the actual molecular formula as (X5Y7Q)n. Then,n x ( 12.01*5 + 16*7 + 14.01) =…

Q: What is the molar mass, in g/mol, of the hydrate compound with the proposed formula of CrCl3⋅3H2O

A: Since you have posted multiple questions, and these are not related to each other therefore as per…

Q: How many molecules are contained in a 325-mg tablet of aspirin (C 9H 8O 4, molar mass 180.2 g/mol)?

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Q: There are 12.6 grams of sugar. With the molecular formula C12H22O11, what is the molar mass of this…

A:

Q: The chemical formula of lysine (a building block of proteins) is C6H14N2O2. Given that the formula…

A: Given, Formula mass of lysine, C6H14N2O2 = 146.19 amu = 146.19 g/mol

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A: We have given the formula of caffeine as C8H10N4O2 And asked for 1) Molar mass of caffeine 2)…

Q: For the following chemical reaction, what mass of sulfuric acid, H2SO4, in grams will be needed to…

A:

Q: If 6.7 × 10²⁵ molecules of CO₂ are produced in a combustion reaction, what is the mass in kg of CO₂…

A: Given: The number of molecules of CO₂=6.7 × 10²⁵ molecules The moles of CO₂=(6.7 × 10²⁵ )÷ (6.022 x…

Q: Potassium bromate is a colorless , crystalline substance whose composition is 23.4 % K , 47.8 % Br ,…

A: An empirical formula gives the smallest whole number ratio of different elements present in the…

Q: Hydrogen cyanide, HCN, is prepared from ammonia, air, and natural gas ( CH4) by the following…

A: The balance chemical reaction :  2NH3(g) + 3O2(g) + 2CH4(g) ---Pt---> 2HCN(g) + 6H2O(g)  Mass of…

Q: what is the percentage composition of oxygen of potassium sulfate,K2S04?

A: Since, Molar mass of K2SO4= 174.259 g mol-1 Molar mass of O = 16 g mol-1 %O = ?

Q: 4.2 A compound that can be sampled or "smelled by sniffing your armpits or someone's unwashed feet,…

A: The percent of carbon, Hydrogen, Oxygen is 55.80 %, 7.03 %, 37.17 % respectively

Q: 4.84. Aluminum chloride (AICI3) is used as a catalyst in the production of polyisobutylene, which is…

A: Given, Mass of Aluminium (Al) metal reacts = 2.70 g Mass of chlorine (Cl2) gas reacts = 7.10 g…

Q: If 5.9 × 10²⁵ molecules of CO₂ are produced in a combustion reaction, what is the mass in kg of CO₂…

A: Given,           Molecules of CO2 = 5.9×1025 molecules

Q: 8. How many moles are there in 7.5 x 1043 molecules of H2SO,?

A: Given that , Molecules of H2SO4= 7.5×10^23

Q: In air, nitric oxide gas reacts with oxygen to produce nitrogen dioxide, which appears brown in…

A: The amount of Nitrogen dioxide formed can be calculated as follows

Q: (a) One molecule of the antibiotic penicillin G has a massof 5.342 x 10-21 g. What is the molar mass…

A:

Q: For the combustion reaction of C2H4 (g), what number of moles of CO2 can be produced by the reaction…

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A:

Q: An industrial detergent was found to be composed of 57.72% C, 8.073% H, 17.09% O, by mass and the…

A: Let's assume, the empirical molecular formula of the given compound is CaHbOcX2c. 'a' is the no of…

Q: A compound whose empirical formula is XF3 consists of 65%F by mass. What is the atomic mass of X?

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A:

Q: A compound M2O3 is 30.06% oxygen, where M is an unknown metal. The molar mass of M2O3 is?

A:

Q: One starting material for the preparation of nylon is adipic acid, which is produced from the…

A:

Q: An impure sample of table salt (NaCl) that was dissolved in water and treated with silver nitrate to…

A: Mass of the impure sample = 1.741 g  Mass of AgCl formed = 4.084 g

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A: Since %(m/m) composition means the weight % i.e weight of component X 100/ total weight of compound…

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A: Balanced Combustion reaction of sugar:  C12H22O11 + 12O2 .....> 12CO2 + 11H2O Mass of sample =…

Q: Phosgene, a substance used in poisonous gas warfare during World War I, is so named because it was…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: 8.6 x 10²³ formula units of NaCl is equal to how many moles H?

A: Applying mole concept and avogadro number.

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A: The mass of a substance is calculated as follows,                  Mass = No. of moles × Molar mass…

Q: Suppose a student starts with 2.4185 g of a sand mixture and separates the components into 1.3012 g…

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Q: The percent by mass of silver in Ag,CO3 is %.

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Q: Question attached

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A:

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".