Calculate the pH of the buffer system made up of 0.17 M NH3/0.47 M NH,CI.

Q: Give an example of an oxyacid (containing a polyatomic ion) in aqueous solution and it’s formula

A: Oxyacids are the oxygen containing acids.  Polyatomic ion means ion having a group of atoms.

Q: Use standard enthalpies of formation to calculate AH°rxn for the following chemical reaction: 3NO2 (...

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Q: Use the solubility chart below, identify the cations that would be expected to form a precipitate up...

A: We have to tell solubility of ions with the help of solubility chart.

Q: The step 1 and 2 of the mechanism is done and provided with the question. Please draw the step 3,4 a...

A: Draw the mechanism for the reactions below (include lone pairs on all structures; do not explicitly ...

Q: If density of a gas is 2.44 g/L at 27°C and 570 torr. What is its molar mass? This gas is an oxide o...

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Q: t the major and minor products of the reaction. Name the products using syst H+ CH,CH,CH=CH, + H,O →...

A: Alkene with H2O in presence of H+ , electrophilic addition reaction mechanism takes place.i.e. hydra...

Q: Earth’s atmosphere by volume. What is the partial pressure of argon  when the total pressure is 760 ...

A: Total pressure = 760 mm Hg Mole fraction of Argon = 0.0093  Partial pressure = mole fraction × Total...

Q: Zinc metal reacts with HCI according to the following balanced equation: Zn(s) + 2HCI(aq) --> ZnCl2(...

A: Given : volume = 47.0 ml density = 1.03 g / ml specific heat = 4.184J /g°c temperature change of sol...

Q: 9. An isotope of an element is dependent on A. Protons B. Neutrons C. Protons and neutron D. Electro...

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

Q: What is the percent ionization at 25 °C for a 0.00675M solution of codeine (CH2,NO)? O 18.7% O 1.54%...

A:  Codeine is a weak base , to calculate its percent ionization we would first calculate draw an ICE t...

Q: Given the following reactions 2C D K-5.12 10 D 2A - 28 K-653 10 1st attempt Calculate the value of t...

A: The solution is as follows:  

Q: Do the following:  a. Circle and name the functional group b. Name the Hydrocarbon

A: IUPAC Rules : Identify the functional group Identify the longest carbon chain as parent chain.  Star...

Q: At 10 °C the Kw is 2.93 x 1015 It you have at solution of 1.23 x 10 M solution of (H,O) at 10 °C wha...

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Q: Draw the Lewus structure for the following atoms and assign the correct number of valence electrons ...

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Q: Calculate the activation energy (E ) for the reaction assuming that the frequency factor (A) is 10 1...

A: Activation energy will be calculated using Arrhenius equation if we know the value of rate constant ...

Q: Calcium hydroxide is prepared by adding calcium oxide to water: CaO (s) + H2O (l) → Ca(OH)2 (s) Ca...

A: Given, Calcium hydroxide is prepared by adding calcium oxide to water: CaO (s) + H2O (l) → Ca(OH)2 (...

Q: Which of the following shows the correct chemical equation for the ionization of HIO2? HIO2(aq) + H2...

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Q: In the following set, indicate the most polar bond. H-H      H-Si      H-P       H-S

A: Relationship between Ionic character and electronegativity difference (∆EN) The polarity of the bond...

Q: The decomposition of N2O(g) to nitrogen and oxygen has the rate law rate = k[N2O]2 where k = 1.1 x...

A: Chemical kinetics is branch of chemistry in which we deal with speed at which rate of reaction occur...

Q: OH + H-C-0 (C) 0. (a)

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Q: The distribution coefficient, k = (concentration in hexane/concentration in water), for solute A is ...

A: Distribution coefficient of solute (Kd) = 7.5 Initial concentration of A in water = 10 g in 90 mL Pr...

Q: Write the condensed structure of the following: 4. Propyl Pentanoate 5. Pentanenitrile

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Q: The tetrachloroplatinate anion has Dah symmetry. Use sketches to show that the Pt dxy orbital has B2...

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Q: If the chemical potential of the j-th component at a temperature of T1, H;(T1), is known and the par...

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Q: Provide an arrow-pushing mechanism for the following reaction. The first half of the mechanism invol...

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Q: Be sure to anmer all parts. Industrially, vanadi metal which ised stel alloys, can be attained by ra...

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Q: Enter your answer in the provided box. 121 The atomic masses of the two stable isotopes of antimony,...

A: Given-> Abundance of 1=57.30% Atomic mass of 1 = 120.9038 amu Abundance of 2 = 42.70 % Atomic mas...

Q: Consider a 1.00 L of 1.50x10-3 M hydrocyanic acid (HCN, K,=4.9x10-10). 1. Write the equilibrium expr...

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Q: Pentaborane BgHgts) burns vigorously in O2 to give B203ts) and H200. Calculate AHren for the combust...

A:   Balanced chemical equation is  2 B5H9 + 12 O2  -->  5 B2O3 + 9 H2O    Heat of reaction is  ∆Hrx...

Q: Enrico Fermi (1901-1954) was a famous physicist who liked to pose what are now known as Fermi proble...

A: *** 1 ***volume of a sphere = 4/3 x pi x r³ and we want volume of sphere with diameter 6450km - volu...

Q: Classify these compounds as soluble or insoluble. Drag the appropriate items to their respective bin...

A: Solubility depends upon the solubility product. 

Q: pH Solution is <7 (c) (select) |1.0 x 10-7 м (е) (select) (a) (select) <1.0 x 10-7 M (0 (select) (b)...

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Q: The disintegration energy of the decay30 P15 by position emission is 4.30 Mev.  The daughter nuclide...

A: Given,  disintegration energy = 4.30 Mev  mass of Si = 29.97396 u  Mass of positron, 0e+1 = 0.000548...

Q: A 22.0 g block of copper at 45'C absorbs 2.50 kJ of heat. Given the specific heat of Cu is 0.385 Ng-...

A: given :-  mass of Cu = 22.0 g  specific heat of Cu = 0.385 J/g°C  initial temperature = 45 °C  heat ...

Q: How many moles of gas would you have if you had a volume of 38.0L under a pressure of 1432 mmHg at s...

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Q: In a first order reaction, the concentration of the reactant decays to its half in 10 minutes. Calcu...

A: The half-life of a first-order reaction can be determined by using the following formula: t12 = 0.69...

Q: Explain isomers

A: Please find the below attachments.

Q: What is the density of NH3 gas at 78˚C and 345 torr?

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Q: If 2.00x102 mL of 6.0 M nitric acid is diluted with water to a volume of 3.00*102 mL, what is the co...

A:   Dilution : the process of addition of solvent to a solution is called dilution In this process no....

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 886.0 g sample ...

A: The heat (q) absorbed or evolved can be calculated by the mass (m) of the compound, temperature diff...

Q: Calculate the Gibbs free energy change at 298 K for a mixture containing 1.5 atm H,º (g), 2(g), 2. 0...

A: We would use thermodynamics relation to calculate the value of change in Gibbs free energy ( ∆G ) . 

Q: Predict the MAJOR carbon-containing product(s) of each reaction. Show stereochemistry where applicab...

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Q: Draw the Lewis structure of PH3 and then draw its electronic geometry and it’s name

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Q: Do the following:  a. Circle and name the functional group b. Name the Hydrocarbon

A: Functional group- A group of atoms responsible for the characteristic reactions of a particular comp...

Q: elemental gas has a mass of 10.3 grams. If the volume is 58.4 L and pressure is 758 torr at a temper...

A: Mass=10.3g Volume = 58.4 L Pressure = 758 torr = 758 / 760 = 0.9974 atm ( 1 atm = 760 torr) Temperat...

Q: Complete the reaction scheme below with the missing structure and any other necessary reagents. You ...

A: The answer is as follows:  

Q: Substances A, B, and C can all act as oxidizing agents. In solution, A is green, yellow, and C is re...

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Q: The compound contains multiple chromophores that would absorb energy and cause an electronic transit...

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Q: The Kc for the following reaction is 137 at 34 °C: A2 (g) + B2 (g) -→ 2AB(g) What will the equilibri...

A: Calculate the concentration of AB at equilibrium....

Q: Which of the following atoms has three valence electrons? In         Cl         Ca        Ge       ...

A: This question is related to atomic structure. Electronic configuration is the distribution of electr...

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.