3 lens

Q: What’s the PH of a 0.14M HA solution if Ka for HA is 4.0x10^-2

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Q: 12. Why does Li have a larger first ionization energy than Na? O A. Because Li has only 3 electrons ...

A: Ionization energy : It is the energy required to remove the most loosely bond outermost electron fro...

Q: please do transformation on how to get organic chemistry 2 -Bu -Bu OMe OMe

A: See synthesis below.

Q: Calculate Kp for the following reaction at 500.0°C 3NO(g) N2​O(g)+NO2​(g) using the free-energy dat...

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Q: Give the values for all four  quantum numbers for each electron in the ground state of the nitrogen ...

A: The solution is given below - 

Q: A scientist measures the standard enthalpy change for this reaction to be -818.2 kJ/mol: Fe2O3(s) +...

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Q: PURE SUBSTANCES OR SOLUTIONSS CAN BE NEUTRAL with PH value with PH value with PH value example examp...

A: Substances can be devided into three subunits depending on their pH value, that are acidic (<7), ...

Q: Calculate the number of grams of silver nitrate required to prepare 3.0L of 0.600 M AgNO3.

A: This question can be solved using molarity concept. Molarity is the number of moles of solute per li...

Q: The mass of manganese(II) sulfide that is dissolved in 250 mL of a saturated solution is_______  gra...

A: Given : Volume = 250 ml

Q: Reduction - Oxidation Problems Solve the following problems. Show your complete solution. A. Determi...

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Q: Calculate the number of H+(aq) ions in 1.6 mL of pure water at 25 ∘C. Express your answer using two ...

A: given :  volume of pure water at 25°C = 1.6 mL  To be calculated :  number of H+ ions       (2 sig.f...

Q: 2. The following balanced chemical equation represents a chemical system at equilibrium: U C,H,(g) +...

A: This reaction is a reaction between alkene and bromine. It can changes from alkene to alkane.  

Q: If the mRNA for gene A has a half-life of 2 hours, and the mRNA for gene B has a half-life of 10 hou...

A: Half life of gene A = 2 hours Half-life of gene B = 10 hours

Q: Consider the following system at equilibrium where Kc = 6.30 and H° = 111 kJ/mol at 723 K. 2 NH3 ...

A: Given reaction is 2 NH3 (g)< ------> N2 (g) + 3 H2 (g) where Kc = 6.30 and H° = 111 kJ/mol at ...

Q: 12. Below are the processes that describe the first, second, and third ionization energies of an alu...

A: Ionization Energy The amount of energy required to remove the electron from the valance electron fro...

Q: 21) Calculate the mass percent of nitrogen, N%, of ammonium carbonate, (NH),CO, A) 49.95% B) 12.50% ...

A: Calculate mass % of N in ammonium carbonate ?

Q: Calculate the amount in grams of yeast

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Q: The equilibrium constant, K, for the following reaction is 3.92×10-2 at 531 K. PCl5(g) PCl3(g) + Cl2...

A: [PCl5] = 0.120 M [PCl3] = 0.0687 M  or  6.87 x 10-2 M [Cl2] = 0.0687 M  or  6.87 x 10-2 M

Q: 2.50 g of an unknown base is dissolved in 289 mL of water and has a concentration of 0.216 M. What i...

A: M is molar unit  Molar concentration / Molarity(M) is the concentration term. It is the ratio number...

Q: NH3 a polar molecule but BCl3 is not?

A: NH3(ammonia) is considered as a polar molecule whereas BCl3(boron trichloride) is considered as non-...

Q: Which of the species listed has a Lewis structure with a resonance structure? Select all that apply....

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Q: This series demonstrates a drop-by-drop addition of 0.5 M barium chloride solution (???? ) to 0.5 M ...

A: Given, same concentration (0.5M) of BaCl2 and Na2CO3 reacts to produce product.  All species present...

Q: Which of the following compounds would need to overcome dispersion forces when converting frorn a li...

A: PH3 and SO2 both have mainly dipole- dipole force.so we need to overcome dipole-dipole  forces when ...

Q: 4. What is the product of the reaction below? OA OB. R.

A: Diels-Alder reaction: When diene reacts with dienophile forms an addition product (cyclohexene deriv...

Q: CI BiCl3 (5 mol%) CI D, 24 hrs.., neat CI

A: The objective of the question is to write the detailed mechanism of the given transformation. In thi...

Q: Each of the following salts can be prepared from an acid and a base. Write the balanced molecular eq...

A: Acid and base react with each other forming salt and water. This reaction is termed as neutralizatio...

Q: there is a set of absorbance data that you have obtained while doing an experiment studying the diff...

A: A question based on quantitative analysis, which is to be accomplished.

Q: In Thin Layer Chromatography，why does the least polar of the analytes （biphenyl）have a higher Rf val...

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Q: Assuming that the collision factor remains the same, by what factor will the catalyst increase the r...

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Q: 1- lopper and nitric acis Porassium ioaize

A: "Since you have asked multiple questions, we will solve the first question for you ( as per our guid...

Q: calculate the molar heat capacity of a mercury metal with specific heat capacity of 0.140 j/g0c.

A: Molar heat capacity is the amount of heat required to increase the temperature of one mole substance...

Q: 9. For the following precipitation reaction: Pb(NO3)2 (aq) Na PO4 (aq) _Pb,(PO,), O + + _NaNO; a. Ba...

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Q: An oxide of iron found in many iron ores, contains 27.9 g of iron and 8.00 g of oxygen. What is the ...

A: Given data is as follows: The mass of iron = 27.9 g The mass of Oxygen = 8.00 g The empirical formul...

Q: Lewis

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Q: Please help

A: Alkenes on reaction with ozone (O3) followed by cleavage with hydrogen peroxide produces correspondi...

Q: Consider the reaction A + 2B = C whose rate at 25 °C was measured using three different sets of init...

A: A + 2B = C

Q: 13:58 ll 4G 5 © T Ô 2. What is the correct IUPAC name for the following compound? CH3 H2N" ČH3 OAN-m...

A: Here we have to write correct IUPAC name of above given compound-

Q: 548.1 grams 8769.6 grams For items 8 to 10. In the reaction 2H, + CO > CH,OH, 6.8 g carbon monoxide ...

A: We can define limiting reactant as one of the reactant whose total consumption stops reaction. 

Q: 1. Calculate the number of grams of sodium used in the reaction. (The vap 7 0°C =0035? atm )

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Q: 1. Colorimetric methods of analysis are based on having a reagent that changes as a function of the ...

A: The correct option is (c)  Calorimetric analysis is based on the the principle of beer-lambert law. ...

Q: (a) Which has the smaller fourth ionization energy, Sn or Sb? (b) Which has the larger sixth ionizat...

A: Ionisation energy is of energy required to remove an electron from the valence shell of an isolated ...

Q: The complete combustion of methane, CH4, can be represented by the equation CH4 (g) + 2 O2 (g) ---> ...

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Q: Please draw the mechanism for this transformation using curved arrows. CI Na OCH3 CH;OH

A: This type of reaction called Favorsky Rearrangement.

Q: 2. What type of instrumental analysis technique is used to measure the concentration of an analyte b...

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Q: 24 2. H (aq) + CH;OH(aq) MnO, (aq)Mn"(aq) + CH,O(aq) + H,O(1)

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Q: 1. What is the value of the Clausius-Clapeyron Constant?

A: Since you asked multiple questions so as per Q&A guidelines of portal I solve first question bec...

Q: produces carbon dioxide and water. After 4.64 mL of ethanol (density = 0.789 g/ml) was allowed to bu...

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Q: 1. What is the correct IUPAC name for the following compound? N. A Diphenylamine B. 1,1 diphenylamin...

A: This is secondary amine. Naming of secondary amine is done by using suffix amine . In given structur...

Q: Consider the following reaction where Kc = 55.6 at 698 K. H2(g) + I2(g) 2HI(g) A reaction mixture ...

A: Consider the equilibrium reaction: H2 (g) + I2 (g) → 2HI (g)                    Kc=55.6 The moles of...

Q: The temperature of the steam coming from the steam boiler to the steam engine cylinder is 120 °C. St...

A: Work done by steam engine can be calculated by using carnot theorem which gives the efficiency.