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Q: )Find the volume and the mass 2) how many mL of 0.050M NaOH you need to add 20.0mL of this buffer to…

A: Concentration of acetic acid stock = 12.0 M Volume of buffer = 100.0 mL Concentration of buffer =…

Q: 0.400 L sample of gas at -55.0 °C and a pressure of 2.15 atm is allowed to expand to double its…

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Q: Write down the chemical reaction and text form for the Daniel cell and show that the reaction will…

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Q: A saline solution (NaCl solution) of 0.7 mg in 100 mL of solution is used in the formulation of…

A: In this question we have to calculate the osmotic pressure.

Q: E OWLv2 | Online teaching and le x + Update takeCovalentActivity.do?locator=assignment-take Use the…

A: 2H+(aq) + Sn(s) ----> H2(g) + Sn2+(aq)

Q: Which of the following are cations? [select all that apply)] Ca2+ O BrO4 O C2+ O F2

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Q: To a buffer containing 0.150 mol NH3 and 0.250 mol NH4 0.050 mol of HCl (aq) is added. Calculate the…

A: pH of the resulting buffer solution can be calculated using Henderson hasselbalch equation.

Q: 1.) How many degrees of freedom does a solution has if it contains 3 components? А. 1 В. 2 С. 3 D. 4…

A: Note: As per the guidelines, solution of first question has been made. For the expert solution of…

Q: 1. a) Describe Ph and Buffers for parental drug delivery? b)Explain the differences between PMDIS…

A: The pH value is one of the critical aspects of parenteral preparations, which should be as close to…

Q: The work function for uranium is 5.768 X 10 19 J. Determine the kinetic energy of an electron that…

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Q: Give a mechanism for the reaction of AC with AD to yield AE. Explain the selectivity in terms of…

A: 2 and 5 position of pyrrole is prone towards electrophilic attack.

Q: Given this equation, Sr(OH)2(s)-Sr2* (aq) + 20H (ag), what is the pH of a 2.5 X 10-4 M Sr(OH)2…

A: Given,  The chemical equation,  Sr(OH)2(s) ------> Sr2+(aq) + 2OH-(aq)  Concentration of Sr(OH)2…

Q: What is the hydronium ion concentration in a solution that has a pH of 8.34?

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Q: An object has a mass of 170 g and a density of 13.2 g/cm³. Determine the volume of the object in…

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Q: Select true or false for each of the following. Heat and temperature are the same thing. Energy can…

A: 1. Heat is measure of energy while temperature is measured of degree of hottness and coldness of…

Q: Chemistry 1) write data on this spectrum 275nm 85anm Peaentage ↑ of absoabance

A: The given data is uv absorption spectra.It gives two maxima at 275nm and 350nm.

Q: What is the oxidation state of tungsten in WO2?

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Q: Student ID: 1. A flask contains a mixture of gasses nitrogen dioxide and nitrogen monoxide. If the…

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Q: Consider the reaction 3X + 2Y → 5C + 4D With excess Y, how many moles of X are needed to produce…

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Q: The theoretical yield of a product in a reaction is determined by the limiting reactant. O True…

A: 1.Theoritical yeild is the amount of product fromed from given balance equation . 2.While actual…

Q: 1. A balloon partially filled with 2.3 moles of hydrogen gas, H2 has a volume of 1.35 L. What would…

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Q: If 0.00864 mol neon gas at a particular temperature and pressure occupies a volánie of 228 ml, what…

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Q: When 11.3 g of an organic compound known to be 62.04% C, 10.4% H, and 27.55% O by mass is dissolved…

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Q: This equation is not balanced. What is the sum of the molar coefficient for the balanced equation?…

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Q: 2. Find the answer and record the answer to correct significant figures If only the answer is given…

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Q: A 20.0 mL sample of 0.150 M ethylamine is titrated with 0.0981 M HCI. What is the pH after the…

A: Given  mmoles of base = 0.15 M x 20 mL = 3 mmoles of acid = 0.0981 M x 5 mL = 0.4905…

Q: 1. Draw the best Lewis dot structure for SeF4 in the correct molecular geometry [Include formal…

A: Draw the best Lewis dot structure for SeF4 in the correct molecular geometry [Include formal…

Q: metallic character increases as you move to the right acrosss a row in the periodic table and…

A: The correct option is  C)metallic character decreases as you move right to the periodic table and…

Q: Which of the tollowing is a bufter system? Ο ΗΝΟ2 and KNO2 O S(OH)2 and Sr(Br)2 O HCl and LiCI O…

A: Buffer solution: The solution that resists the change in pH is known as a buffer solution. The…

Q: Which of the following solutions can act as a buffer? HCI and NACI NaCl and H2O NAOH and HCI NH3 and…

A: Buffer is a mixture of a weak acid and its conjugate base or a weak base and conjugate acid.…

Q: 14. The freezing point of a 0.0925 m solution of ammonium chloride was found to be -0.325°C. What is…

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Q: Which elements would be found in the alkaline earth metals family? [Select all that apply] O cesium…

A: Alkaline earth metals are six chemical elements in group 2 of the periodic table .These element are…

Q: General Equation Type of Reaction A +X- AX AX A+ X A+ BX → AX +B -or- Y + BX → BY + X AX + BYAY + BX…

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Q: Time (s) [N205] (M) 0.0365 600 0.0274 2 N205 (aq) → 4 NO2 (aq) + 02(g) 1200 0.0206 1800 0.0157 2400…

A: Recall the given reaction,                     2 N2O5 aq  →  4 NO2 aq  +  O2 gThis is a first…

Q: How long (in minutes) will it take to chromium plate an object of 0.160 m2 to a thickness of 1.30…

A: We have to calculate the time taken in minutes for the deposition.

Q: What is meant by the phrase, "the energy of an electron in a given orbital is quantized"? 2.

A: Electrons are negatively charged particles that revolve around nucleus in circular paths called…

Q: Use the dropdown to determine the oxidation state of the cation. Ni(CO3)2 is called nickel( [ Select…

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Q: aqueous hydrochloric acid is reacted with aqueous sodium sulfite

A: The given reaction is a typical case of double displacement reaction where cation and anion of both…

Q: OWLV2 | Online teaching and le X ovalentActivity.do?locator%3Dassignment-take Update [Review Topics]…

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Q: 1.28×10−4M solution of potassium permanganate has a transmittance of 0.5 when measured in a  1 cm…

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Q: (a) (b)

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Q: in 95.0 g of solution with water as the solvent. The vapor pressure of water was 23.8 Torr at 2!

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Q: A dioxin-contaminated water source contains 0.066 % dioxin by mass. How much dioxin is present in…

A: To solve this problem we will use the formula  % of dioxin = (mass of dioxin / mass of solution) ×…

Q: Question 20 Consider the diagrams below. Rxn Progress Rxn Progress Rxn Progress II • Which diagram…

A: To solve this problem we have to know about the given chemical reactions diagram

Q: write an essay explaining bonding in water cohesion.

A: Cohesion means how much molecules like to stick to itself. For water molecule there operate very…

Q: Calculate biological standard potential of the NAD+/NADH couple at 25°C. The reduction half-reaction…

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Q: Complete Structure # of Carbons Shortcut Alkanes Structure Cycloalkanes (If applicable) 1 2 5 6 7 8…

A: 1- methane  2- enthane 3- propane 4-butane 5 - pentane 6- hexane 7- heptane 8- octane

Q: A 53.3 % by mass solution of propylene glycol (C3H3O2) in water is used in cars to prevent…

A: In this question, we will determine the new boiling point of the solution after addition of 53.3% by…

Q: OH¯(aq) + H2CO3(aq) → HCO, (aq) + H; > [ Select ] [ Select ] [ Select ] [ Select ] + +

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Q: TRUE OR FALSE: Allylic carbons can be a substrate for halogenation via electrophilic addition.

A: In this question, we will see that the given statement in the above question is true or false.  You…

Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.