When diborate (B2H6) reacts with oxygen to form boric acid (HBO2) and water, what mass of diborate will be needed to burn 36.1 g of oxygen?

Q: Consider the hypothetical cations, A* and C* and anions, B¯ and D'. Calculate the AG when 20.0 mL of...

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Q: You are asked to prepare a pH = 3.75 buffer solution starting from 1.25 L of a 1.00 M solution of hy...

A: Given: pH of solution = 3.75 Volume of HF solution = 1.25 L Concentration of HF = 1.00 M Ka of HF = ...

Q: Draw the mjor product of both question with mechanism asap

A: Given structure of reactants. 

Q: 3- Qualitative analysis : establishes the chemical identity of the species in the sample like (solid...

A: (1) Qualitative analysis :-  Qualitative analysis concern with detection of elements or radicals in ...

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Q: taborane BgHg(s) burns vigorously in 02 to give B2031s) and H20(). Calculate AHxn for the combustion...

A: 2B5H9 (s) + 12O2(g) -----> 5B2O3(s) + 9H2O( l)  

Q: points? I. The end point of a titration is reached when the titrant and analyte are stoichiometrical...

A: Equivalence point is defined as the point where the concentration of titrant is equivalent to the co...

Q: Enter your answer in the provided box. Determine the molar mass of a gas that moves 4.67 times as fa...

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Q: calculate the molality m of 1000 g of a -7 solution contain 100 g of solute(NaCl) and ? 900g of solv...

A: Use the molality formula to calculate molality of the given solution. First calculate moles of solut...

Q: Name five (5) monosubstituted benzenes that serve as parent compounds in disubstituted or polysubsti...

A: 1. Monosubstituted benzenes

Q: An 93.1 mL sample of "wet" O2 (g) is collected overwater at 21.4oC and a barometric pressure of 755 ...

A: Here we have to use Daltons law of partial pressure. And to calculate the volume percent we need to ...

Q: Calculate the standard entropy change for the following reaction at 25°C. S(rhombic) + O2(g) → SO;(g...

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Q: Decide whether each molecule or polyatomic ion is polar or nonpolar. If the molecule or polyatomic i...

A: ★ F2 :  F2 is homonuclear diatomic molecule which is non polar . A homonculear diatomic molecule F2 ...

Q: QUESTION 1 During an experiment, a student mixed 14.5 mL of a 0.500 M sodium fluoride solution with ...

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Q: Be sure to answer all parts. Industrially, vanadium metal, which is used in steel alloys, can be obt...

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Q: Describe the effects of cooling an exothermic reaction at equilibrium.

A: Given it's a exothermic reaction. 

Q: What is the theoretical yield of chromium that can be produced by the reaction of 40.0 g of Cr203 wi...

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Q: You are assigned as a design engineer to design a Carbon Dioxide Capsule (CO2). The design means you...

A: Given: Diameter of cylindrical float = 0.45 m Radius of cylindrical float = 0.225 m length of float ...

Q: 6. Lysozyme is an enzyme that breaks bacterial cell walls. A solution containing 0.150 g of this enz...

A: Given Data :  1. Mass = 0.150  2. Osmotic pressure = 0.953 torr         π = 0.953 torr × 0.00316 atm...

Q: Phenolphthalein has a pKa of 9.7 and is colorless in its acid form and pink in its basic form. For ...

A: Given value from the question, pH= 7.7 pka=9.7  

Q: Be sure to answer all parts. Heating copper(II) oxide at 400°C does not produce any appreciable amou...

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Q: What volume of a 0.540 M KOH solution contains 15.5 g of KOH?  My question: After converting the gr...

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Q: Be sure to answer all parts. Predict the sign of the entropy change for each of the following proces...

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Q: A 30.00-mL sample of 0.125 M HCOOH is being titrated with 0.175 M NaOH. What is the pH after 23.0 mL...

A: pH is equal to negative logarithm of hydrogen ions

Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 5....

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Q: Enter your answer in the provided box. The reaction between nitric oxide (NO) and oxygen to form nit...

A: The given reaction is  2NO (g) + O2 (g) - - > 2NO2 Number of moles of NO2 produced = mass/molar m...

Q: Activity 2. Complete the table to prepare the given solutions with different concentrations: Mass So...

A: Solution-A             5 % by volume 25 mL HNO3 solution         Total volume of solution = 25 mL   ...

Q: 12.49.Explain why it is essential that fl uids used in intravenous injections have approximately the...

A: Answer of 12.49 is given below

Q: Noting the curved arrows, draw all the product(s), organic and inorganic, of the following reaction....

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Q: Which of the following processes is exothermic, given the following: N2(9) + 202(9) - N204) AH"= 9.6...

A: Both the given reaction are endothermic  reaction... N2 (g) + 2O2 (g) - - > N2O4(l)  Enthalpy of ...

Q: 1.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have...

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Q: els Part IV: Iron content ofan unknown well water sample 34 lowo Unknown Well Water Code Unknown Wel...

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Q: Increasing the temperature of the water by 5 °F would have a significant impact on cooking times. As...

A: Desired boiling point of water = 217 oF Volume of water/solution = 4 quarts The question requires to...

Q: 5. Magnesium hydroxide (Mg(OH)2) has a pKsp value of 11.25. In a solution at pH 10, what is the maxi...

A: Given,  pKsp of Mg(OH)2 = 11.25  pH = 10  What is the maximum Mg2+ concentration in µmol/L = ?  What...

Q: 1. The diagram below shows the structure of a triglyceride. M^^^ A CH2 в CH-O-C ČH;-O- a. What type ...

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Q: alculate the mass of excess reagent remaining at the end of the reaction in which 90.0 g of SO2 are ...

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Q: Mass of beaker 50.5g Mass of marble before reaction 3.0g Mass of marble after reaction 1....

A: Formula of marble CaCO3 Chemical reaction CaCO3 (s)  + 2 HCl (aq) →CaCl2 (aq) + CO2 (g) + H2O (l) M...

Q: Determine the empirical formula of a compound having the following percent composition by mass: K: 2...

A: Given value, %K=24.74% , MOLAR MASS= 39 g mol-1 %Mn=34.76 %, molar mass=54.938 g mol-1 % O = 40.50 %...

Q: Pentaborane BgHg(s) burns vigorously in 02 to give B203(s) and H201). Calculate AHrxn for the combus...

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Q: Chemistry Question

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Q: The names and chemical formulae of some chemical compounds are written in the first two columns of t...

A: Ionic compounds dissolve in water to form cations and anions. In the aqueous solution, the concentra...

Q: What is the molar solubility of NiS if the Ksp is 3.0 × 10-20? NiS(s) ⇌ Ni2+(aq) + S2−(aq)

A: Given,  NiS(s) ⇌ Ni2+ (aq) + S2- (aq)  The Ksp of NiS is 3.0× 10-20  The molar solubility of NiS is:...

Q: a 232.8mL sample of 2.453 M AgNO3 (aq) was allowed to react with an excess of Na2S(aq). how many mol...

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Q: Which of the following techniques would NOT result in a titration error? a. Adding 100mL of distille...

A: Please find your solution below : Titration is a method of quantitative analysis which is used to de...

Q: Select the correct product of the following reaction series. 1. NaOEt, EtOH 2. Br ? EtO OEt NHAC 3. ...

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Q: The data below were collected for the following reaction: CH3Cl(g)+3Cl2(g)→CCl4(g)+3HCl(g) [CH3Cl]...

A: Recall the reaction, CH3Cl(g) + 3Cl2(g) -----> CCl4(g) + 3HCl(g)  Rate=K[CH3Cl]a [Cl2]b --------(...

Q: 2. What is the empirical formula for a compound containing 26.57% potassium, 35.36% chromium, and 38...

A:  The empirical formula of a compound can be defined as the simplest whole number ratio of atoms pres...

Q: Answer the following questions in vour lab notebook for prep work. The questions ask you to think ab...

A: The above problem is a lab experiment of diffusion of iodine and starch in a bag that is floating in...

Q: Methane burns and give off 192 Kcal/Mol, assuming 90% effeciency in heat transfer. what mass in KG o...

A: Answer: In the process of heating up ice, there will be three steps,  1. Heating of ice up to its me...

Q: Tobramycin sulfate is a 7-ion electrolyte and has a molecular weight of 1425.45 g/mol. Assuming that...

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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".