For heavier nuclei (Z > 40), which of the following describes the relative number of protons and neutrons in the nuclei that exist? they are about equal there are more protons than neutrons there are more neutrons than protons

Q: Even though you used different amounts of NaSCN for each test mixture the values of Kc you measured…

A: Equilibrium constant (Kc) for this reaction :…

Q: 35 mol of zinc react with silver nitrate, how many moles of silver will form?

A: Moles Of Zn = 35 mole

Q: 1.Add 43.8 lbs and 56.8923 lbs. write the correct significant figures. 2. Convert the from 1 answer…

A: 1) we have given two weights 43.8 lbs and 56.8923 lbs Significant digits in 43.8 lbs is 3 and in…

Q: Nitrogen monoxide, a gas recently found to be involved in a wide range of biological processes,…

A: 1) Given, 2NO(g) + O2(g) ➝ 2NO2(g)  ∆rH° = -114.1 kJ/mol.rxn a) Is this reaction endothermic or…

Q: How many sites of diversity are there in this combinatorial library? NN N. HN `NH2 он `NH2 6 4 8. 3

A: To check the site of diversity we would check the positions in given compounds where atoms of groups…

Q: The following scene represnts a gaseous reaction between compounds of nitrogen (blue) and oxygen…

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Q: If you have 35.4 mL   of a 4.55% NaNO3 solution, what is the mass of NaNO3?

A: Answer: In this question (w/v)% of NaNO3 solution is given to us and we have to find out the mass of…

Q: A buffer solution is made that is 0.427 M in HNO2 and 0.427 M in KNO2. If K for HNO, is 4.50 x 10,…

A: Given-> Concentration of HNO2 = 0.427 M Concentration of KNO2= 0.427 M Ka(HNO2) = 4.50 × 10-4…

Q: How many milliliters of 15.7% (v/v) acetic acid would you need to use to get 39 milliliters of…

A: Given-> (V/V)% = 15.7 %  Volume of acetic acid solution = 39 millilitres

Q: molar concentration

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Q: a solution is prepared by dissolving 8.29g of Na2SO4 in enough water to make 225 ml of solution.…

A: Molarity (M) :  Number of moles of solute present in one litre solution is called Molarity M= n /…

Q: Trypsin is active in Acidic Alkaline Nutral All of above the term apoenzyme is applicable to simple…

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Q: Find the normalization constant, N, for the antibonding orbital wave function formed from the…

A: Here we are required to find the normalization constant N for the antibonding orbital wave function…

Q: What is the standard enthalpy (in KJ) of formation for this reaction: CH (g) + O2(g) → CO2(g) +…

A: Given,  CH4(g) + O2(g) ---------> CO2(g) + H2O(l)  ∆H°CO2(g) = - 393.5 kJ/mol  ∆H°H2O(l) = -…

Q: Current Attempt in Progress Use Lewis symbols to diagram the formation of Cal2 from Ca and I atoms.…

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Q: Papaverine hydrochloride (abbreviated papH" Cl¯; molar mass 378.85 g/mol) is a drug that belongs to…

A: papH+ Cl- has a mass of 32.0 mg/mL . Kb of abbreviated pap is 8.33 * 10-9 at 35 ◦ C and Kw is 2.1 *…

Q: 9.51 g mixture of metal hydrate BaCl2*2H20 with an unknown amount of KCI is heated to remove water…

A: Here 9.51 g of mixture containing BaCl2.2H2O and KCl was heated so that the reduced mass becomes…

Q: 5. Calculate the pH of a solution that is 0.050 M NH, and 0.150 M NH,CI. The Ka=5.62 x 10-10 for…

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Q: Find the standard cell potential for an electrochemical cell with the following cell reaction.…

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Q: How will you recognize that a single replacement reaction occurs when you combine an active metal…

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Q: Under identical conditions, separate samples of O2 and an unknown gas were allowed to effuse through…

A: To Calculate molar mass of unknown gas , we would use the relation between rate of effusion and…

Q: Below is a short reaction sequence. Provide the structure of the two missing organic compounds.…

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Q: , Bi-214 undergoes B decay. W

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Q: Mg + O2 ------> MgO Na2CO3 -------> Na2O + CO2 C3H8 + O2 -------> CO2 + H20

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

Q: Quinine (C20 H24 N2O2) is the most important alkaloid derived from cinchona bark. It is used as an…

A: Given :  pKb1 = 5.1  pKb2 = 9.7  Mass of quinine  = 1 gm  Volume of solution = 1930 ml

Q: Give the clear handwritten answer..

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Q: но NBS HBr ether CCI, a. b. Mg, ether SOCI, Br H,0 d.

A: ->HBr give substitution reaction through formation of carbocation. ->NBS give allylic…

Q: wavelength

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Q: What do you call the stage of the titration in which the number of moles of the titrant is the same…

A: Answer: In the titration analyte is the unknown whose concentration or any other data we have to…

Q: (1] CH,CH,MgBr [2] H20

A:

Q: solution is made by mixing 0.250 L of 0.020 mol L-1 acetic acid and 1.10 g of potassium acetate (M =…

A: Here a solution contains 0.25 L of 0.02M acetic acid and 1.10 g of CH3COOK. Ka CH3COOH =1.8×10-5 .…

Q: The maximum theoretical mass of product in a certain reaction is 20.0g, but only 15g is actually…

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Q: Calculate the maximum number of grams of iodic acid, HIO3 that can be produced when 171.3 g of ICI3…

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Q: Calculate the moles, to the nearest .01 mol, of O2 that will be prepared through the decomposition…

A: Recall the decomposition reaction of potassium chlorate :  2 KClO3  ------->  2 KCl  +  3 O2 8.3…

Q: Data Table 1.513- Lay Mass of 4-nitrobenzaldehyde Mass of p-anisidine Mass of product Melting point…

A: A question based on concentration terms that is to be accomplished.

Q: Consider (S)-2-chlorobutane reacting with methanol, CH3OH a) Write a balanced equation, clearly…

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Q: VISUALIZATION Modes of Radioactive Decay 140 130 120 110 100 90 80 70 60 50 • Stable • Radioactive…

A: Here we have to predict the neutrons to proton ratio for atomic number 20 or less when graph is…

Q: MnO2 + 4HCI -→ MnCl2 + 2H2O + Ch For items 7 to 9: 7. What is the mole ratio of MnO2 to H2O? 8. What…

A: Mol to mol ratio in a reaction is the coefficient present before the compound in the reaction. Check…

Q: Mn(OH)2 has Ksp = 4.5 x 10-14. What is the molar solubility of Mn(OH)2 in a solution containing…

A: Given,   Ksp = 4.5 x 10-14 concentration of Mn2+ from Mn(NO3)2 is = 0.10 M Solubility equilibrium of…

Q: For each chemical reaction sted in the frst column of the table below, predict the sign (positive or…

A: The answers are given below

Q: 4. Explain why a protonated amine is water soluble:

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Q: Identify the intermolecular forces present in the following substances. 3) Methyl alcohol, CH3OH

A: The types of intermolecular forces present in Methyl alcohol is given below

Q: What is the pH and pOH for water at 50°C? Kw (50°C)=5.48×10^-14

A: Given :

Q: A student prepares a 1.4M aqueous solution of benzoic acid (C,H,CO,H). Calculate the fraction of…

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Q: The effect of reversible competitive inhibitor can be cancelled by: increasing the product…

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Q: A common name for methanol (CH3OH)is wood alcohol. The normal boiling point of methanol is 64.7 °C…

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Q: A titration is carried out where 50mL of 0.3M HF is titration with a 0.190M NaOH solution. Determine…

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Q: b) Use the following radial probability function to justify i. why the B than has a first lower…

A: b) Given that, the radial probability functions for 2s and 2p orbital. We have to tell (i) why the…

Q: Electrical current is carried by a flow of charged particles, which often occurs through electrons…

A: As per the guideline, since you have asked multiple questions, we have solved the first question for…

Q: 1. Define oxidation numberm oxidation, reduction, reducing agent and oxidizing agent. 2. What is…

A: Define Oxidation number A number is to assign an element or atom in a chemical compound that…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.