In a mixture of hydrogen (H2) and argon (Ar) gas, 15% of the total gas pressure is exerted by hydrogen. If the total pressure is 60.0 atm, what pressure does the hydrogen exert?

Q: 1.00 L of a 0.0250 M solution of C9H7O4, adds 15.0 mL of aqueous sodium hydroxide . The pH of the ne...

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Q: An atom has an of electronic configuration 1s2 2s2 2p6 3s2 3p6 4s1 3d9. Estimate the number of its m...

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Q: e Kc fo

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Q: The AG for the reaction H,(g) + I(e) = 2HI(g) is 2.60 kJ/mol at 25°C. In one experiment, the initial...

A: H2 + I2  <=> 2 HI ∆G° = 2.60 kJ/mol = 2600 J/mol Reaction quotient., Q = P2(HI) / P (H2) P (I2...

Q: Explain how the directionality of bonding may affect the strength of the hydrogen bonds.

A: Hydrogen bond is directional.

Q: 3. The pH of 1.48 x 106 M Mg(OH)2 is 8.471

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Q: Fe  +  H2S04  ?  Fe2(SO4)3  +      H2

A: Here in the question there is no instruction to do.By guessing as it is an unbalanced chemical equat...

Q: Enter your answer in the provided box. Calculate the standard entropy change for the following react...

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Q: ndirect EDTA determination of cesium. Cesium ion does not form a strong EDTA complex, but it can be ...

A: Solution - According to the question - Given - mmol of Bi in reaction = 23ml * 0.07719M = 1.77 mmol ...

Q: Perform the Q-test on the following percent KHP values: 30.97 % 35.99 % 36.54 % 37.22 % Select all c...

A: Given data: Percentage of KHP: 30.97 %, 35.99 %, 36.54 %, 37.22 %

Q: Calculate the number of oxygen atoms in a 130.0 g sample of diphosphorus pentoxide (P205). Be sure y...

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Q: A tank contains 12 moles of a mixture of neon, krypton, and radon at 300. kPa. If there are two mole...

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Q: 9:30 PM Tue Mar 15 22% I ( Lab+8 copy O O Q e Home Insert Draw Layout Review View Table Times New Ro...

A: Balancing equation:

Q: BOYLE'S LAW 1-5. A sample of collected nitrogen gas has a new volume of 750 L, and its pressure decr...

A: Solving only first question in accordance with the guidelines. We will solve this question using boy...

Q: The rate constant for the first order decomposition of SO2Cl2 is 1.37 ´10-3 min-1 at a certain tempe...

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Q: You are a forensic chemist and vou are given a white powder to analyze. You take a 0.25- g sample of...

A: Given that 0.25 g of a sample is dissolved in 4.0 g of a benzene.Freezing point of the solution is 3...

Q: Probelm 2

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Q: Consider the following equation: Ca(OH)216) + 2 HClag) -> CaClzlaq) + 2 H2O) a) How many liters of 0...

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Q: Part C HCN forms when synthetic fibers containing Orlon® or Acrilan burn. Acrilan has an empirical f...

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Q: Calculate the surface tension of ethanol at 0 and 70 °C. Let the critical temperature of ethanol be ...

A: Surface tension of the concerned liquid can be calculated from Eotvos equation.

Q: At 10 °C the Kw is 2.93 x 1015 It you have at solution of 1.23 x 10 M solution of (H,O) at 10 °C wha...

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Q: . Among the choices, choose which will have the lowest energy for a Pd2+ ion? a. 3P0 b. 3F4 c. 3F2 ...

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Q: 2. A solution may contain any of the three group I cations. A white precipitate is formed upon the a...

A: Cations present in first group are as precipitate of chloride is Ag+, Hg2+2 and Pb+2 ions. 

Q: 1. How much energy is required to change 2600 gram of ice at 0°C into water at the same temperature?...

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Q: Soaps work best when water is neutral or alkaline, but not very well when water is acidic. Explain t...

A: Soap is mixture of sodium salt of long chain fatty acids.

Q: en the thermochemical equation 2S02(g) +02(g)-2S03(g). AH'pxn=-198 kJ/mol, how much heat is evolved ...

A: Heat of formation of reactions is -198kj/mol

Q: Be sure to answer all parts. How many moles of cobalt (Co) atoms are there in 7.00 K 10 (7.00 billio...

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Q: Briefly explain why “loading up” on one reagents drives the reaction while the other one would decre...

A: This is cross-aldol condensation reaction also known as Claisen-Schmidt reaction. In above reaction ...

Q: Determine the pH for the 4 stages of chemistry in a titration between 25.0 mL of 0.247 M HBRO2 and 0...

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Q: Sulfur trioxide gas combines with water to form a single product. SO3 + H2O → ? Based on the law o...

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Q: Complete the reaction scheme below with the missing structure and any other necessary reagents. You ...

A: The answer is as follows:  

Q: 4. Plants and some unicellular organisms use photosynthesis to make food. Balance the equation for p...

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Q: Formula Lewis structure AXE Electron group Molecular Bond Polarity Notation geometry geometry angle ...

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Q: 45. Which paint contains polystyrene as a base? A. O Synthetic rubber B. O Enamel C. Aluminium D. O ...

A: Which paint contain polystyrene as a base ?

Q: mass percent composition.

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Q: Given the following Fe,03 (s) + 3 CO (g) →2 Fe (s) + 3 CO2 (g) AG' = - 29.4 kJ 3 Fe203 (s) + Co (g) ...

A: Calculate ∆G° of the given above reaction ?

Q: Select the single best auswer. Which of the following has more atoms: 4.08 g of hydrogen atoms or 18...

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Q: Calculate the density of [110] of W

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Q: Click in the answer box to activate the palette. Balance the equation representing the reacetion bet...

A: Balancing a chemical equations:

Q: Which of the following bonds is arranged in order of INCREASING ionic character? Select one: O a. C-...

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Q: Of course, this proposed law is hypothetical. Using the following data collected experimentally (pro...

A: Data  Time (s)  [NO2], M  ln [NO2] 1/ [NO2]  0  1.00 x 10-2 -4.60517 100  60  6.83 x 10-3 -4....

Q: Which of the following statements is true for the oxide anion, 02-? Select one: O a. It has an elect...

A: Choose the correct option for O2- ?

Q: How many moles of Ba(OH)2 are present in 275 mL of 0.600 mol L-1 Ba(OH)2? Express your answer numeri...

A: Volume of Ba(OH) 2= 275 ml = 0.275 L Molarity of Ba(OH) 2 = 0.600 mol L —1

Q: Vapour pressure is defined as the partial pressure of a gas in equilibrium with liquid. What is the ...

A: 1)  We would use Clausius Clapeyron equation to calculate the vapour pressure at 15°C .     Note : A...

Q: Enter your answer in the provided box. Calculate the average atomic mass of chlorine. The percentage...

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Q: For many purposes we can treat ammonia (NH,) as an ideal gas at temp Suppose the temperature of a sa...

A: To solve this problem we will use the combined gas law .  Which is given as  P1V1/T1 = P2V2/T2     

Q: Can you identify constitutional isomers of CH3Cl or of CH2Cl2. If you can, draw them. Solve it asap

A: Constitutional isomer is one types of isomer in which compound having same molecular formula, but in...

Q: A sample of gas is manipulated so that its temperature (in K) triples and its volume is reduced to o...

A: An ideal gas will follow the ideal gas equation. The ideal gas equation is given by PV=nRT, where P,...

Q: Draw the Lewis structure for HNO.

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Q: Calculate the standard enthalpy change of the reaction in kJ. Is the process endothermic or exotherm...

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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.