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Q: POST-QUESTIONS 1. After a student dissolved 0.5 g of white solid in water, she tested the conductivi...

A: The statement given by her about the experiment is correct or not is given below with explanation.

Q: Biofuels such as wood generate carbon dioxide when they are burned, but biofuels are nonetheless con...

A:

Q: What is the [H3O-] and [OH-] ion concentration respectively in a solution that contains 0.155 M HNO3...

A: HNO3(aq) ----> H+(aq) + NO3-(aq) [HNO3] = 0.155 M    

Q: 10) Assume that boron is used to dope silicon. If boron dopant concentration uniform and has a value...

A:

Q: A solution of H2SO4(aq) with a molal concentration of 2.88 ? has a density of 1.167 g/mL. What is th...

A: Given, Molal concentration of H2SO4 solution = 2.88 m Density of the acid solution = 1.167 g/mL     ...

Q: Americium-241 is an isotope that is commonly used for household smoke detectors. Gamma radiation emi...

A:

Q: The action of formaldehyde on protein is: a. coagulation b. dialysis c. autolysis d. saponificat...

A: Formaldehyde is a well known cross-linking agent that can inactivate, stabilize, or immobilize prote...

Q: Which is bronsted lowry acid and which is bronsted lowry base, and which is no one. Answer and expla...

A:

Q: why is transminase reaction needed during isolating ephedrine from ephedra sinica ? explain what doe...

A: Transaminase or an aminotransferase is an enzyme catalyst that catalyzes reaction between an alpha k...

Q: What volume of 0.7777 M HNO3 is needed in order to produce 200 mL of 0.1550 M HNO3?

A:

Q: Problem 4. Each of the following reactions is displaced to the right. Make a list of all the Bronste...

A:                                  Answer  Bronsted acid :- Which species loss the proton is called Br...

Q: Some chemicals, like hydrogen peroxide, are prone to decomposition by photocatalysis. How can you pr...

A: Given,  Some chemicals, like hydrogen peroxide, are prone to decomposition by photocatalysis  How ca...

Q: Which of the following aqueous solutions are buffer solutions? (Select all that apply.) O 0.33 M NH,...

A: Since you have posted multiple questions, we are entitled to answer the first only.    

Q: A single alkyl bromide reactant theoretically yields either of the given products, depending on the ...

A: The reaction given is,  

Q: In order to form Ba(IO3)2, 500 mL of 0.5000 M Ba(NO3)2 was mixed with 500 mL of 0.0500 M NaIO3.   ...

A:

Q: 25.0 ml of 0.600M hypobromous acid, HBrO, is titrated with 0.400M sodium hydroxide, NaOH. Calculate ...

A: Given 25.0 ml of 0.600M hypobromous acid, HBrO, is titrated with 0.400M sodium hydroxide,   We have ...

Q: How can you tell which is the electron donor in each of the redox couples? Redox couple one: DMSO/D...

A: Electron donation refers to the oxidation ,the species which donates electron undergoes oxidation an...

Q: In order to form Ba(IO3)2, 500 mL of 0.5000 M Ba(NO3)2 was mixed with 500 mL of 0.0500 M NaIO3.   ...

A: Given: Concentration of Ba(NO3)2 taken = 0.500 M Concentration of NaIO3 taken = 0.500 M Volume of Ba...

Q: Determine the empirical formula of a compound that has the following mass percents: 37.0% iron 20.5...

A:

Q: Given that a mixture of nitric acid (bp 86 °C) and water forms a maximum-boiling-point azeotrope tha...

A: Solution.                                 Given That mixture of nitric acid =  bp 86 °C maximum-boi...

Q: An acid (HA) dissociates as follows: НА - H* + A minus Arrow should be interpreted as an equilibrium...

A:

Q: = 850.0 nM. What initial concentration of the drug 17. A certain drug binds to a protein with Kd wou...

A: Given: Kd = 850.0 nM = 0.85 μM Fraction of binding, θ = 0.95 (95% given)

Q: A 1.067g sample of magnesium oxide of 84.736% were treated with 50mL of 1.017 N Sulfuric Acid, and a...

A: Given: mass of MgO = 1.067 g Volume of H2SO4 = 50 mL  Normality of H2SO4 = 1.017 N Volume of NaOH = ...

Q: Die Alder readion

A:

Q: In Part 1, draw a mechanism for the reaction of butan-1-ol with sodium amide. In the box on the left...

A: Given reaction is : Draw the curved arrow mechanism of the given reaction = ?   

Q: An unknown compound contains nickel, phosphorus, and oxygen. When analyzed, a 100.0 g sample was fou...

A: Molecular formula is defined as sum of masses of atoms in molecules.

Q: acid base K name formula name formula acetic acid HCH, co, 18 - 10 pyridine CH, N 1.7 10 nitrous aci...

A:  

Q: A crystal of solid NaCl is placed into an aqueous NaCl solution. it is observed that more crystals d...

A: Given, Crystal of solid NaCl is placed into aqueous NaCl solution  and no more crystal is dissolved.

Q: Calculate the molar concentration of isopropanol in an aqueous solution that contains 3.00 g of isop...

A: We have to predict the molar concentration .

Q: Starting from a terminal alkene R-CH=CH2, is there any advantage in using the two-step protocol (hal...

A: MCPBA is also has tendency to react with ketone and give ester group. 

Q: 7.596×10-4 mol of CF4(g) (tetrafluoromethane gas) is generated into a 131.0 mL headspace, at 25.0 °C...

A: Answer: This question can be solved using ideal gas equation which is the extended form of boyle's l...

Q: Compound R 1. 0.8 0.6 0.4 1000 2000 Wavenumber (cm-1) 3000 -3.75 A-2.20 TMS 0 d pom Conclusions Give...

A: 1. 3000-2900 cm-1 due to the C —H stretching of Alkane 

Q: Part A Determine the value of the equilibrium constant, Kal. for the reaction CO2(g) = C(s) + 02(g)....

A:

Q: Concept Check: Photodissociation/Photoionization Sample Problem 4. The bond energy in N, is 941 kJ/m...

A: Bond energy of N2 = 941 kJ/mol  

Q: Why are reactant and product concentrations constant at equilibrium?   Because the chemical reactio...

A: We have to predict the correct statement regarding equilibrium.  

Q: II. Answer the following problems. Show your solution. 1. A gas in a closed container is heated wit...

A: Solution.  (1)                         Given that • heat energy (Q) = 10 J • rise of lid of contain...

Q: Consider the reaction: SO,C (9) = SO2(9) + C2 (9) K= 2.97 x 10° at 625 K In a reaction mixture at eq...

A: Given, SO2Cl2 (g) ↔ SO2 (g) + Cl2 (g) K = 2.97 x 103 T = 625 K Partial pressure of SO2 = 133 mbar = ...

Q: 2. What is the hybridization of each carbon atom in this molecules? CN

A: Carbon with 4 sigma bonds in its surrounding is sp3 hybridized.  Carbon with 3 sigma bonds in its su...

Q: given a diluted acid solution that was tested by another student. They were supposed to make a solut...

A: Given: your experimental data matched the test but not the target concentration.  

Q: Which has lower entropy? CO2(g) or CH4(g)?

A:

Q: Calculate the volume occupied by 122.541 g of water at 22.35 °C.

A:

Q: What is the [H3O-] and [OH-] ion concentration respectively in a solution that contains 0.155 M HNO3

A:

Q: Nitric oxide, an important pollutant in air, is formed from the elements nitrogen and oxygen at high...

A:

Q: Tabulate Group A anions according to Reagents used and Results of Reactions

A: Group A anions includes HCO3- , CO3-2, CH3COO- ,S-2 , SO3-2 , S2O3-2 , NO2- ions.

Q: The molar mass of an unknown compound was determined in three repeat experiments. The molar masses o...

A:

Q: We saw that the energy cost of an axial methyl is 1.8 kcal/mol; therefore, we might expect cis-1,3-d...

A: Conformation of  cyclohexane are 1)Chair conformation  2) Boat confirmation  3) Half chair confirmat...

Q: CLO S Deduce the structure of an unknown compound using the loll Chemical shifn (d) (ppm) 13 429 747...

A: From proton nmr spectrum,  it is evident that there are 14 H's in the molecule. From mass spectrum, ...

Q: How many neutrons in Helium? He Answer: Check

A:

Q: The equation for the dissolving of lead (II) chloride (including heat) is: PBCI2(s) + heat Pb2+ (a q...

A:

Q: A client wants to determine the concentration of his sample, FESCN2* solution. To be able to do this...

A: Given: Analysis of FeSCN2+ complex concentration.  

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.