b. What is the % w/w Fe3O4 in the sample? O 10.33% O 32.58% O 23.24% O 48.86% O 21.72%

Q: How many moles of carbon dioxide could be produced if 10 moles of octane, C 8H 18, are combined with...

A: C8H18 +25O2->16CO2 +18H2O

Q: c2identify the reducing agent and oxidizing agent in the following reactions

A: Reducing agent is that species which reduces other and oxidise itself and oxidising agent is that su...

Q: The ka of hypochlorous acid is 4.0 times 10^-8.

A: A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass

Q: Question 28 10 Calculate the molarity of the resulting solution prepared by diluting 25.0 mL of 18.0...

A:

Q: A 0.3654 g sample of the disinfectant p-cresol (108.1 g/mol) underwent combustion analysis and forme...

A:

Q: Explain why many alcohols are soluble in water. What part of an alcohol will limit its solubility in...

A: Water is a polar solvent and it can dissolve an ionic or polar covalent compound. The solubility of ...

Q: Assurhe a sample of krypton is held in an idealized container that can change Its volume and pressur...

A: V1=8L T1=25°C=298K T2=100°C=373K V2=?

Q: Thermochemical equation shows the enthalpy relationships between reactants and products. Enthalpy is...

A:

Q: Balance the following redox reactions in acidic solution: 1. ClO3- + SO2  SO42- + Cl-

A: Balance the following redox reactions in acidic solution:

Q: The standard reaction free energy AG = -190. kJ for this reaction: CH;OH(g) + CO(g)→HCH;CO2(1) Use t...

A:

Q: Calculate the internal energy of the system that absorbs 50 kJ of heat and 165 kJ work done by the s...

A:

Q: 1. Fe:Os (I) + CO (g) –> Fe (1) + CO2 (g)

A: Answer: In normal oxides, oxygen always shows -2 oxidation number and that will be our basis to find...

Q: CH3 CH3 CHO OSIME;

A:

Q: It is the study of heat change in chemical reactions *   A. Heat Energy   B. Physics   C. Thermodyna...

A:

Q: b4 assign oxidation numbers to each of the atoms in the equation and determine if the reaction is re...

A:

Q: The common constituent in all acid solutions is O H2 H+ O OH- O H2SO4 O C-

A: When acid is dissolved it form H+ ion 

Q: 3 NO2 (g) + H2O (1) --> 2 HNO3 (aq) + NO (g) Based on the balanced reaction above, answer the follow...

A: Nitrogen dioxide reacts with water to form nitric acid and nitrogen monoxide. The equation for the b...

Q: O2(9) + F2(g) = F2O2(g) Expt # [F2] Rate (M/s) 0.1 1.00 x 10-4 0.8 0.2 5.00x10-5 2 0.1 0.1 1.25x10-5...

A:

Q: A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat o...

A:

Q: Sort and explain the degree of miscibility of 3 molecules in water: CH3COOH (acetic acid); C2H5OH (...

A:

Q: In the laboratory you dissolve 22.8 g of nickel(II) sulfate in a volumetric flask and add water to a...

A:

Q: A bomb calorimeter has a heat capacity of 6.067 kJ/°C. A sample of vitamin (C31 H46O2) has an intern...

A:

Q: Current Attempt in Progress Examine the following reaction. 3 CO 2(8) + 2 Fe(s) = Fe 203(s) +3 CO(8)...

A: Here we are required to find the equilibrium expression for the given equilibrium reaction.

Q: When lead (II) nitrate reacts with sodium iodide, sodium nitrate and lead (II) iodide are formed. Pb...

A: In this reaction, the sodium iodide is a limiting reagent and the lead nitrate remains in excess.

Q: | = 0; m = 0 | = 1; m = 0 E1 = 1; m = 0 = 3; m = -3

A: Quantum numbers are the set of four numbers which gives complete information about electrons.  

Q: A 1.0 L buffer solution initially contains 0.25 mol NH3 (Kb=1.8x10^-5) and 0.25 mol of NH4Cl. In ord...

A: First we would Calculate Initial pH of buffer using Henderson Hasselbalch equation.  Then we check i...

Q: write as many accurate and or relevant statements about the following picture. a minimum of 5 descri...

A: The given Picture is the hydrolysis of protein catalysed by the enzyme histidine.  

Q: I need help calculating the remaining values please!!!!

A: A question based on mole concept that is to be accomplished.

Q: Draw the Lewis Structure of (a) barium sulfide, (b) magnesium bromide, (c) nitrogen dioxide.

A: Lewis electron dot structures  are diagrams that show the bonding between atoms of a molecule as wel...

Q: Ethics/ Positive of a pharmaectical industry doing own research

A: A good reasearch involves systematic planning and setting time based realistic objectives. It built ...

Q: What should be left in the locker before entering the laboratory? O a. all of the above O b. cellpho...

A: While working on laboratory some things has to be in mind. Some precausion should be taken as it wil...

Q: 28) Which compound will undergo oxidation to yield cyclopentanone? A) pentanol B) cyclopentane C) cy...

A:

Q: How much work is done by a balloon that contracts from 1.50 L to 0.100 L under an external pressure ...

A: Given-> V1= 1.50 V2= 0.100 L Pext = 1.25 atm  

Q: 0.250 M

A:

Q: 14.8 g sample of an aqueous solution of hydrobromic acid contains an unknown amount of the acid. If ...

A: Aqueous solution of hydrochromic acid=14.8g Volume of barium hydraxide=17.2mL Concentration of hydro...

Q: Part A Write equations for the half-reactions that occur at the anode and cathode for the NaBr (aq) ...

A: Answer: These are the reactions involved with electrolysis process of given substances where at anod...

Q: [References] Use the References to access important values if needed for this question. The followin...

A: Given- Weight of iron(3)oxide = 59.9 gm  

Q: Balance the following redox reactions in acidic solution: 1. ClO3- + SO2  SO42- + Cl-

A: the given equation is ClO3- + SO2 =  SO42- + Cl-  

Q: 4) What is the IUPAC name for this compound? CH3

A:

Q: A sodium flame has a characteristic yellow color due to emissions of wavelength 566 nm. What is the ...

A: Given that  wavelength λ=566 nm =566×10-9m Energy of the photon can be find using the relation, E=hc...

Q: The reaction 2A → B is second order with a rate constant of 51.0/M min at 24°C. (a) Starting with [A...

A:

Q: Select all statements that are true. For polyprotic acids, Ka1 is always the largest Ka out of all ...

A: Given statements are : a. For polyprotic acids, Ka1 is always the largest Ka out of all of the ...

Q: 2- You'll find information on the properties Suppose a 0.048M aqueous solution of sulfuric acid (H, ...

A: Sulfuric acid is a strong dibasic acid. H2SO4 <---> H+ + HSO4- HSO4- <----> H+ + SO42-  ...

Q: Using the information provided along with an understanding of Hess's Law, determine the enthalpy of ...

A: Given- 4Fe+3Sn->2Fe2O3+3Sn.         ∆H=? 2Fe+1/2O2->Fe2O3.                      ∆H=-824.2kJ  S...

Q: Target Reaction: HCl(g)+NaNO s)→ HNO () + NaCl(s) Step Reactions: pup 2NACI(s) + H O() → 2HCI(g)+ Na...

A:

Q: (References] Use the References to access important values if needed for this question. The followin...

A:

Q: Complete the following table. Mass of Sample Moles of Sample Molecules in Sample Total Atoms in Samp...

A:

Q: Metallic calcium crystallized in a face-centered cubic lattice and the atomic radius of calcium is 1...

A:

Q: When CO(g) reacts with 02(g) according to the following reaction, 283 kJ of energy are evolved for e...

A: We need to write value of ∆H , for this we need to check sign and total energy. 

Q: Complete the following table. Mass of Sample Moles of Sample Molecules in Sample Total Atoms in Samp...

A: The question is based on mole concept The formula used and solution is given in the picture

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.