What is the no. Of atoms present in 46 g of Na?

Q: A 11.39 M HCl solution has a density of 1.180 g/mL. What is the concentration of this solution in…

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Q: Look at the periodic table and the table of standard reduction potentials and s the true…

A: Metal has tendency to lose electron and become electropositive.

Q: What is the binding energy in kJ/mol nucleons for lanthanum-138? kJ/mol nucleons 57 H+ 81,n- The…

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Q: Select the reaction that will occur spontaneously. A) Zn²"(aq) + 1,(s) → Zn(s) + 2 l(aq) B) Zn (aq)…

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Q: 1) Rank the compounds in each group below according to their reactivity toward electrophilic…

A: -> Benzene derivatives can give electrophilic aromatic substitution reaction. -> As the…

Q: A chemist titrates 110.0 mL of a 0.1235M butanoic acid (HC,H,CO,) solution with 0.0643M KOH solution…

A: We know at equivalent point mole of acid and mole of base is same, as the base completely neutralize…

Q: 14. Sodium metal reacts with water according to the following reaction. 2Na(s) + 2H2O(1) → 2NaOH(aq)…

A: The step wise solution is as follows -

Q: What is the balanced equation for the galvanic cell reaction expressed using the following shorthand…

A: The cell given is Mg (s) | Mg2+ (aq) || Cl2 (g) | Cl– (aq) | C (s).

Q: What is the pH (to two decimal places) of a 50.0 mL 0.15 M NH3 aqueous solution (at 25 °C) after…

A: Given data,Molarity of NH3=0.15MVolume of NH3=50mL=0.050LMolarity of HCl=0.20 MVolume of…

Q: H20 steam a) What is the orientation of the chiral center in the starting material above: b) As…

A: The given reaction is the steam hydrolysis process of splitting molecules. Steam hydrolysis does not…

Q: Which of the following elements is a good oxidizing agent? (You can answer this without the table of…

A: Oxidising agent is that species which oxidise the other and reduce itself. Reducing agent is that…

Q: 7. The following reaction reaches equilibrium under the condition as indicated. What is the overall…

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Q: please sir solve question 1 part 1 please

A: Q.1  (1) A non volatile solute is that solute which is unable to change easily from solid or liquid…

Q: 1. Explain the difference(s) between the titration curve of a strong acid with a strong base vs a…

A: If we keep acid in a Beaker and base is added from above dropwise , the PH value changes .Now if we…

Q: 1. dropdown asks for geometry (b) 1. asks for geometry 2. asks for degrees 3. asks for degrees…

A: Hybridization is the overlapping of atomic orbitals and form same energy orbitals.  Trigonal…

Q: How many grams of citric acid and sodium citrate must be added to 1L of water to produce a solution…

A: Buffer solution: A buffer solutions is an aqueous solution consisting of a mixture of a weak acid…

Q: At 699 K, ΔG° = –23.25 kJ for the reaction H2(g) + I2(g) 2HI(g). Calculate ΔG for this reaction if…

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Q: A 28.7 mL aliquot of hypochlorous acid that has a concentration of 0.516 M will be titrated with…

A: Given- Volume of hypochlorous acid =28.7 mL  Concentration of hypochlorous acid= 0.516 M…

Q: Consider the hydrolysis of pure water (an electrolytic cell): Anode:    2 H2O(l ) → O2(g ) + 4…

A: Answer: For the reaction to be spontaneous, cell potential must be greater than zero because when…

Q: Question 2 Which of these Brønsted-Lowry acids is most likely the strongest? A HBr HCI C HE D HI

A: Bronsted Lowry acid is a substance which can donate a proton into the solution.

Q: The firstonder is omerization reaetion cy clo propane propere 110 x 10 5.70 x10-4s-l certu adion…

A: Given that the value of  K1 =1.1×10-4 s-1 K2 =5.70×10-4s-1 T1 = 4700C = 743.15 K T2 = 5000C =773.15…

Q: The solvent in a collodial system is also known as the [?] phase. dispersion dispersed particle…

A: Colloidal system is heterogeneous and contains two phases : dispersed phase and dispersion medium.

Q: Nyroysis reoction is given bela : PPP ty pp toP a Now long will it take for D01% qf pp to hyarolize-…

A: The given hydrolysis reaction is a consecutive reaction in which initial concentration of substrate,…

Q: What is the molarity of a solution made by mixing 2.77 g of potassium hydroxide with enough water to…

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Q: b. tor each palr State whetner theyare resonance, Znantiomer, diastereomers structural isomers or…

A: Concept:  Resonance structure: If two molecules have same structure but only electronic distribution…

Q: relaboratory Assignment: chemistry: Equation 1. Use the calculation of E° to determine which of the…

A: Given-> E°cell = E°cathode - E°anode ->There occur oxidation at anode and reduction at…

Q: Consider the following reaction: CH-CI +1+ CH + CI Suppose we start the reaction with an initial…

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Q: find out tmoles of AR present ín the no ang of aluminium?

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: Determine the volumes of 0.350 M Na2CO3 (aq) and 0.225M NaHCO3 (aq) that would be needed to prepare…

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Q: Type of guard column, separation column, and suppressor used for anion- exchange chromatography?

A: Anion exchange chromatography is a process that  work for the separation of substance based on their…

Q: A chemist titrates 250.0 mL of a 0.8118 M pyridine (C,H,N) solution with 0.3729M HBr solution at 25…

A: Given,  [C5H5N] = 0.8118 M  Volume of C5H5N in mL = 250.0 mL  [HBr] = 0.3729 M  pKb of C5H5N = 8.77…

Q: A chemical engineer is studying the two reactions shown in the table below. In each case, she fills…

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Q: Cve a Synthesis mechanism the fattowing ompuund focom hydrrocorbons कल् Cककनक ला चामल बा n any…

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Q: What is the pressure (in bar) of a 4.50 L tank with 2.00 moles of oxygen at 39.3 °C? R= 0.08314…

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Q: Give a clear handwritten answer....?

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Q: What is the oxidizing agent in the following reaction? Cr2O72−(aq) + 6 S2O32−(aq) + 14 H+(aq) → 2…

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Q: The half-lives of different medical radioisotopes are given in the table. If the initial amount of…

A: It is radioactive substance. Every radioactive substance follows first order reaction kinetics. So,…

Q: Click in the answer box to activate the palette. A sample of 0.262 mol of a metal M reacts…

A: Given ->  Mole of metal = 0.262 mole Weight of MF2 = 20.5 gm

Q: 1. For each statement, pick the correct answer. a. In the reaction below, SO,2 is Select) (an acid,…

A: Answer: Given reaction is: SO42-+H3O+↔HSO4-+H2O According to Bronsted-Lowry acid-base theory, the…

Q: Consider the following half-reactions and E• values: Ag+(aq)+e-→Ag(s) E• = 0.80V…

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Q: totich oganie Sotent wotd be better to राफ्फंचंगी खुणापं जिला चनाने प्रष्णेवी अट कुिटनंक 10 exfसतल…

A: Steam distillation is the process used in labs to extract essential oils. It is based on the…

Q: Given that Ka is 1.1x10-4 for R-NH3* (aq) + H2O(1) R-NH2aq) + H3O* (aq) (where R - is a carbon…

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Q: Select one: O a. NaOCH3 O b. CH3CH2MgBr c. H30 O C. O d. NaBH4 e. PhLi

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Q: Write a balanced nuclear equation for the following: The nuclide nitrogen-13 undergoes positron…

A: A positron is the anti-particle of a beta particle, which is emitted by a proton-rich nucleus.

Q: A geologist finds an old rock and wants to determine its age using rubidium-strontium dating. This…

A: Given: Half-life of isotope = 4.75 × 1010 years. And the ratio of 87Sr to 87Rb = 0.15

Q: You make a 200mM potassium phosphate buffer (pKa of 7.20) with monobasic potassium phosphate…

A: Given: Concentration of solutes = 200 mM = 0.200 M                                (Since 1 M = 1000…

Q: 7) How do you separate diffusion current (ia) from kinetic current (i) in a polarographic…

A: The answer is given below

Q: Finish the synthesis by listing out the reagents/solvents used and draw intermediate structures. You…

A: Here we have to synthesize 4-ethylcyclohexanone from given starting material.

Q: What is the molality of a solution containing 7.04 g of urea, CO(NH2)2 , in 418.3 g of water? Enter…

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Q: Thallium-201 is used medically to diagnose heart problems. The half-life of thallium-201 is 72.9…

A: Radioactive decay follows the first-order kinetics. The decay constant (λ) and half-life of a…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.