The composition of a commercial cold remedy mixture is 87% aspirin, 7% caffeine, 6% vitamin C. What mass of mixture has 5 gr caffeine?     a.  5.747gr b.  71.42gr c. 33.85gr d. 9.615gr

Q: 4) ½N2(g) + 02(g)= NO2(g) Kc = 1.04 x 10 N2(g) + 202(g) =N204(g) Kc=7.42 x 1018 %3D Calculate Kc for…

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Q: b) In a second experiment to verify the value of x, the pharmacist heated a 3.752g sample of the…

A: Given, mass of sample of lysine hydrate =3.752 g mass of sample after heating =  3.278 g

Q: III 88MMYSSJVNAaf120nyqOVi-IJmPnmc371rY... O Spotify Web Playe. M Common Ethical D. O CHEMICAL…

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Q: A solution of F is prepared by dissolving 0.0738 + 0.0006 g NaF (molar mass = 41.989 + 0.001 g/mol)…

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Q: Copper(II) sulfate forms a bright blue hydrate with the formula CuSO4⋅?H2O(s) . If this hydrate is…

A: Molar mass of Cu is 63.55 g/mol Molar mass of S is 32.07 g/mol Molar mass of O is 16 g/mol Molar…

Q: Which of the following lists the substances in order of increasıng standard molar entro Periodic…

A: First we have to know about entropy and standard molar entopy.   Entropy : It is the degree of…

Q: A 69.56 g sample of SOCI2 reacts with 13.93 g of CO2 to form SO2 and CCI4. 2 SOCI2 (1) + CO2 (g)…

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Q: (1) C(s) + O2(g) → CO2(9) AH = -393.51 kJ mol1 (2) S(s) + O2(g) → SO2(g) A:H = -296.83 kJ mol1 (3)…

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Q: One of the steps in the commercial process for converting ammonia to nitric acid is the conversion…

A: The balanced reaction between ammonia and O2is as follows, The given grams of NO and H2O are…

Q: grams of I?

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Q: An organic liquid is either methyl alcoholethyl alcohol or a mixture of the two.A 0.220 g sample of…

A: The combustion reaction of methyl alcohol and ethyl alcohol:

Q: 4) ½N2(g) + 02(g)= NO2(g) Kc 1.04 x I N2(g) + 202(g) = N204(g) Kc =7.42 x 1 %3D Calculate Kc for…

A: Calculate Kc...

Q: The ethyl alcohol(Mw=46.06 gimol) content of many juice produced in the United Statesis 3.07% (vol…

A: The vol/vol concentration of ethyl alcohol is = 3.07 % The density of the ethyl alcohol is = 0.7893…

Q: Balance the following equations and indicate whether theyare combination, decomposition, or…

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

Q: How many molecules of sugar would be contained in a teaspoon of sugar if it's mass is 8.5g. 11.

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Q: A particular recipe calls for 342 grams of sucrose (C12H22011). How many moles of sucrose are in…

A:

Q: Question 1

A: Balanced chemical equation of a reaction is written according to law of conservation of mass. Thus,…

Q: 2.48g of hydrated copper(ii)chloride (CuCl2.xH2O) were heated to constant mass. 1.96g of anhydrous…

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Q: If 20.0 g of magnesium reacts with excess hydrochloric acid, what mass of magnesium chloride is…

A: Given Mass of magnesium = 20 g Standard Molar mass of magnesium = 24.305 g/mol Molar mass of…

Q: A 0.6951 g sample of nicotine was analyzed and found to consist of 0.5147 g C, 0.06047 g H, and…

A: Molecular formula of nicotine- C10H14N2   Formula for percentage of element in a molecule = (amount…

Q: A friend asks you to help her find the percent composition by mass of ethane (C,H). She says that…

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Q: Using the data : Mass of weighing bottle +sulphamic acid = 3.38 g Mass of weighing bottle empty=…

A: RMM of a compound is relative molecular mass which is defined as sum of all the individual atomic…

Q: Muriatic acid, an industrial grade of concentrated HCI, is used to clean masonry and cement. Its…

A: Answer : Option c is correct. Here,       we write the instructions for diluting the concentrated…

Q: Tungsten is a very dense metal (19.3 g/cm3) with extremely high melting and boiling points (3370ºC…

A: Let the mass of CaWO4 is w gram. As given  Mass of W in CaWO4 =mass of W in 657g of FeWO4  Moles of…

Q: a 5.000g sample that contained NaCl and BaCl2 *2H2O was heated. After heating the sample had a…

A: Given : Mass of sample of NaCl and BaCl2*2H2O = 5.000 g And mass of sample after heating = 4.688 g

Q: C7H16(g) + O2(g) →   C2H2(g) + O2(g) →   C3H8O(g) + O2(g) →

A: Note : As per our company guidelines we are supposed to answer only first 3 sub-parts. Kindly repost…

Q: A sample of a compound has a mass of 41.13g. The sample is found to contain 37.28 g of carbon and…

A: Answer: option 2) 90.6% Carbon and 9.4% Hydrogen

Q: Copper(I) iodide (CuI) is often added to table salt as a dietary source of iodine. How many moles of…

A: The mass of copper (I) iodide (CuI), mCuI, in 1.00 lb or 454 g of table salt is;…

Q: A 0.4017 g sample of nicotine was analyzed and found to consist of 0.2974 g C, 0.03494 g H, and…

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Q: 1. A student collected the following data during Lab: Mass of MgCO3 hydrate = 0.9987 g. Constant…

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

Q: A cereal contains 11.0 grams of sucrose (C12H22O) per 60.0 grams of cereal. What mass in grams of…

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Q: A 0.5567 g sample of nicotine was analyzed and found to consist of 0.4122 g C, 0.04843 g H, and…

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Q: A balanced chemical equation contains the term "2Ba(OH)2⋅8H2O." How many atoms of each element does…

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Q: an experiment, a hydrated CuSO4 salt was heated and thus dehydrated. Determine the % H2O by weight…

A: We have given that , a hydrated salt  CuSO4  was heated and we get Dehydrated Salt CuSO4  Mass of…

Q: Cgrafito + 2H2 CH4(9) CH4(g) + 202(g) CO2(9) + 2H2Ou) ACH°= -802.37 kJ/mol Cgrafito + O2(g) CO2(9)…

A: Applying Hess's law and with help of data given it is determined that formation∆HCH4.

Q: 4. What is the percentage of water in the hydrate? mass of water in sample X 100 44.8% H,0 % water =…

A: The mass of water in a sample is 0.729 g. The mass of hydrate sample is 1.628 g.

Q: BE’s are: C=O 799, C–H 413, O–H 467, O–O 498, H–H 432 kJ/mol CO2(g) + 4H2(g) → CH4(g) + 2H2O(g)…

A: By using this we can calculate the ∆H°rxn for both the reaction .

Q: gas. Becog t Hcl- e Li, COz t HCl Cf. Mg COg t Hclc S Ke CO3 t HCl

A: In the given question we have to prepare CO2 gas from the given reactions. the reaction below shows…

Q: Part B: Percentage of Baking Soda in an Unknown Mixture 110 UNKNOWN # Mass of test tube and beaker…

A: Mass of unknown mixture = 1.60 g  Mass of H2CO3 released = 0.51 g    Then from following reaction -…

Q: The rusting of iron is due to its reaction with oxygen. An iron nail weighing 8.531 g was left…

A: The balance chemical reaction of the formation of rust from Fe and oxygen is as given: Number of…

Q: 39.) number of moleeules? a. 4.75 mmol of phosphire, PHs a 4.75g of phophney PHs e. 1.25 x10 g eof…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. If you need help with other sub…

Q: 2.20 Fluorite, a mineral of calcium, is a compound of the metal with fluorine. Analysis shows that a…

A: Mass percent is a method of expressing concentration of the solution.   amount of substance present…

Q: 4) ½N2(g) + 02(g)= NO2(g) Kc = 1.04 x 10-9 N2(g) + 202(g) = N204(g) b Kc 7.42 x 10-18 Calculate Kc…

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Q: In one sentence explain what's wrong with this equation, and rewrite it so that the coefficients are…

A: Answer:- C3H6(g)   +  4.5 O2(g)   -------> 3CO2(g)   +    3H2O(g) In this equation the…

Q: Commercial aqueous nitric acid has a density of 1.42 g/mLand is 16 M. Calculate the percent HNO3 by…

A: Given, the density of a solution, d = 1.42 g/mL The molarity of a solution = 16 mol/L Now calculate…

Q: A0.7547 g sample of nicotine was analyzed and found to consist of 0.5588 g C, 0.06565 g H, and…

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Q: (c) O2(g) + 2MgF2(s) → 2MgO(s) + 2F2(g) = 140.76 J/K• mol s° (02g)) = 205.0 J/K•mol rxn S° (F2(g)) =…

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Q: d) c, and (e) p? red quantities: (a) 351 g,

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Q: Nitrogen ΔHof (kJ/mol) ΔGof (kJ/mol) So (J/mol K) N2 (g) 0 0 191.6 N (g) 472.7…

A: Given, Moles of N2 = 1.590mol