How many moles are in 239 g of iron?

Q: Construct the expression Kc for the following reaction. Sn(s) + 4 Cl:(g) = 2 SnCl-(1) 1 Drag the til...

A: Equilibrium constant : 

Q: A mixture of two enantiomers has as observed rotation of -18°. The specific rotation of the (-) enan...

A:

Q: Which of the following structures is formed from the flow of electrons described by the arrows shown...

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Q: How to find percentage of chlorine in agcl

A: Percentage of an atom is the ratio of  molecular weight of atom present in the given molecule and Mo...

Q: Orciprenaline(C11H17N03, 211.258 g/mol) is a bronchodilator used in the treatment of asthma. The BP ...

A: ORCIPRENALINE belongs to the class of drugs called 'bronchodilators' that is used for treating sympt...

Q: A 25.00 ml of Ni2 solution was diluted in HCI and treated with 25.00 ml of 0.05283 M NazEDTA. The so...

A: We know that   EDTA forms 1:1 complex with metals Zn+2 and Ni+2 Initial moles of EDTA = M*V = 0.0528...

Q: Based on the reaction below, if 1.15 M of CO and H,0 and 2.50 M of CO, and H2 are added to a sealed ...

A: If the concentration of product is larger than the equilibrium concentration of product then the equ...

Q: (4) a heterogeneous mixture 3 What is the concentration of AgCl in an aqueous solution that contains...

A: Concentration can be calculated in terms of parts per million (ppm) . The ppm is given below

Q: If 801 J of heat is available, what is the mass in grams of iron (specific heat = 0.450 J/g °C) that...

A: For the first question simply it follows the  q= ms∆t equation.   For the second one it is the case ...

Q: At a certain temperature the vapor pressure of pure water is measured to be 233. mmHg. Suppose a sol...

A:

Q: The reduction of nitrogen monoxide, NO using hydrogen, H2 gas has the following mechanism. Step 1: 2...

A: Given :-  mechanism of reduction of NO  step 1 : 2NO(g) + H2(g) → N2O(g) + H2O(g)  (slow)  step 2 : ...

Q: Three titration trials were performed and three molar concentrations of NaOH were calculated. The th...

A: We would use formula to calculate standard deviation . 

Q: 1. N, + 3H, 2NH3 (0) 2 (g) 2(g) + 2NH, » CO(NH,)2 + H,O) 2. CO. 3(g) (), 2(g)

A:

Q: From the stock solutions of 1.00-mol L acetic acid and 1.00-molL of sodium acetate, six solutions we...

A: Since you have asked a question with multiple subparts, we will answer only first 3 subparts for you...

Q: 14. a) Order the following elements from lowest to highest electron affinity: Si, Sn, Cl. b) State t...

A: Electron affinity is the energy released when an electron is added to the outermost shell of an atom...

Q: Write the correct IUPAC name:

A: Rules for assigning IUPAC Name :-  Longest chain is selected first. Substituents should be given lo...

Q: QUESTION 5 Consider the following reaction at equilibrium: A (g) = 2B (g) Temperature (°C) 200 400 K...

A: Exothermic reaction is a reaction in which heat is released and endothermic reaction is a reaction w...

Q: Could you write out the mechanism for the reduction of Benzoin by NaBH4 to form 1,2-ethanediol. Not ...

A: Given:-   We have to perform the mechanism of the reaction and explain where BH3 will be attached a...

Q: What is the pH of a buffer prepared by adding 0.708 mol of the weak acid HA to 0.305 mol of Na in 2....

A: Solution -

Q: What is the pH of a solution what is formed when 0.035M HCl(aq) is mixed with 0.045M HBr(aq)?

A: Given that, [HCl]= 0.035 M  [HBr]= 0.045 M  pH of the solution = ? 

Q: How much energy is required to raise the temperature of 11.0 grams of gaseous neon from 22.4 °C to 3...

A: Given that: Mass of neon = 11.0g Initial temperature(T1) = 22.4°C Final temperature(T2) = 35.3°C Cha...

Q: Energy A 30. Use the molecular orbital diagram to figure out the electronic configuration for N2. Th...

A: We have to use molecular orbital diagram to solve this problem

Q: Naphthalene

A: In this question we have to explain  the experiment of heat of benzoic acid and Naphthalene bomb cal...

Q: topic:  Proper Use and Calibration of the pH meter What is it necessary to rinse the pH electrode w...

A: It is necessary to rinse the pH electrode with distilled water every after pH reading: 

Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 5....

A: The solution is given below - 

Q: e percent yield ot

A:

Q: please explain along the answer. rate K2CR2O7 H2SO4 / H2O heptanal

A: Reaction of heptanal with K2Cr2O7 in presence of H2SO4 / H2O

Q: Give the balanced chemical equation of a complete (saturated) hydrogenation of 1-butyne.

A: hydrogenation of 1-butyne.  

Q: Which of the following is the product for the given reaction? HNO3 ? H2SO4

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Q: Directions: Complete the table below, based on your understanding of the polarity of molecules, thei...

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Q: Consider the same 1.0 M solution of H2A (Ka1 = 1 x 10-6 and K22 = 1 x 10-1 What is the concentration...

A: The concentration is taken same ie 1 molar in each case ie H2A and HA-.

Q: Find the uncertainty ox in x as a function of the uncertainties ou and oy in u and v for the followi...

A: Solution.                       Given that (a) x = 1/2(u + v) (b) x = uv^2 (c) x = u^2+v^2    

Q: CO2ME Me- Me CO2ME hv 12 Ме., PhCI Me Me 110°С, 87% Me Ме Ме

A:

Q: Based on the initial rates given below, determine the rate constant, k for the following reaction. N...

A:

Q: Calculate the following different ways of expressing concentration of solutions. As an example ...

A: The percentage by volume is determined by the ratio between volume of the solute to the solution vol...

Q: Calcium carbonate decomposes on heating as shown in the chemical equation. When 50 g of calcium carb...

A: Recall the equation %yield = (Experimental yield/Theoretical yield)×100

Q: Name the highlighted chemical group in each molecule. Lewis structure name of highlighted group н н ...

A: The name of the functional group is given below

Q: 2. Calculate [A]/ [HA] ratio of phosphoric acid species presents in blood at pH=7.4. Identify specie...

A: Henderson Hasselbach equation is used in the preparation of a buffer.  pH = pKa + log [base][acid] T...

Q: Considering LeChatelier's Principle, list 4 different ways in which you could shift the following en...

A: According to Le Chatelier's principle , If there any change happens to a system that is in equilibri...

Q: Compound "X" has a density of 1.71 g/L at 755 mm Hg and 25 °C. What is the molar mass of  compound X...

A: Density = 1.71 g/L Pressure =  755 mm Hg = 0.993 atm  ( 1 atm = 760 mmHg) Temperature = 25 °C = 298....

Q: How many moles are in 1.06 x1020 atoms of iron?

A: Given :- number of atoms of iron = 1.06 x1020 atoms  To calculate :- number of moles of iron

Q: The reaction H2S(g) + 3 O2(g) SO2g) + H2O(g) has Kp = 1320. What is Kp for the reaction 2SO (g) + 2H...

A:

Q: What is the half-life in minutes of a compound if 75.0 percent of a given sample decomposes in 35.0 ...

A: Given, Assuming first order kinetics. 75.0 percent of a given sample decomposes in 35.0 minutes Let,...

Q: pls answer the second one in normality

A:

Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 4....

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Q: Briefly explain in your own words why the bond angle increases as the number of electron groups decr...

A: The bond angle increases as the number of electron groups decrease. 

Q: A solution is titrated with AGNO, to determine the CI- concentration. At the endpoint is a colloidal...

A: As precipitate of AgCl forms it preferentially absorbs Ag+  ions and develops positive charge on sur...

Q: Which reagent(s) and/or condition(s) are needed for positions 1 and 2? 1. 2. Br Br

A: 1. Hydrolysis reaction of double bond occurs via most stable carbocation formation and then nucleoph...

Q: A substituent needs to be added to the reactant to allow the following reaction to occur. Which of t...

A:

Q: 1) How will you distinguish the two members of each of the following pairs of compound by their IR s...

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.