e percent composition of

Q: Weight of sample Nx Vx mEq weight (9) %3D x 100 96

A:

Q: PROBLEM 3: You are asked to prepare a pH = 3.25 buffer solution starting from 1.25 L of a 1.00 M sol...

A: Acidic buffer is a solution of weak acid and it's strong salt having one ion common with that of wea...

Q: identify the classification of each structural formula of biomolecules. Write your answer below the ...

A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...

Q: Cogme CO̟Et (Dienephile)

A: The given compound is an methyl ester of acetylene .it can be named as below

Q: precipitation reaction

A:

Q: Calculate the pH of a mixture containing 0.23 M HONH2 and 0.44 M HONH3Cl. (Kb = 1.1 × 10–8)  What i...

A:

Q: mL

A:

Q: Draw the mechanism and products of the acid-base reaction shown below. b) Identify the role of each...

A: The answer is as follows:  

Q: A solution containing a mixture of metal cations was treated with dilute HCl and no precipitate form...

A: Answer: This question is based on qualitative analysis of basic radicals where we have to study the ...

Q: 20. Calculate the percent composition of Ag,SO4. 21. What is the percent of water in Na2CO3 . 2H,O? ...

A:

Q: 1. Given the reaction: CO2(g) + H2(g) ⇌ H2O(g) + CO(g) If Kc = 1.6 at 1263 K, calculate the number o...

A: Given,  The reaction:                                            CO2(g) + H2(g) ⇌ H2O(g) + CO(g) If ...

Q: Solve the problems and show your solutions. a) According to EPA, the maximum contaminant level of m...

A: According to EPA, the maximum contaminant level of mercury in drinking water is = 2.00 ppb The numbe...

Q: Explain the different methods of measuring pressure?

A: Pressure is force per unit area.The SI unit for pressure is the pascal. Other units of pressure are ...

Q: At constant Temperature, a sample of 6.0L of nitrogen gas at 2.0 atm pressure was allowed to expand ...

A:

Q: If Ka for the acıd 1s 2.51 x 10 at 25 C, what 1s the Kb of the conjugate base? 3.98 x 10 b. 3.98 x 1...

A: Ka = 2.51x10-5  

Q: 9. A piece of aluminum is heated to a temp of 71.8°C, then placed in 150.0 mL of water at 20.7°C unt...

A: Given data, For Aluminum, Cp =0.903 J g-1 ℃-1 mass m=? T1=71.8 ℃  T2=25.6 ℃  

Q: Determine the NUMERATOR of the equilibrium constant given the reaction below: Chemical Reaction: 2 S...

A: Kc is the ratio of the equilibrium concentrations of product over equilibrium concentrations of reac...

Q: H,C -CH3 H,C CH3 H,C -CH3 CH structure 1 structure 2 Which is the more stable alkene? Explain your a...

A: Stability of alkene depends on 1. Hyperconjugation conjugation 2. Resonance or mesomeric effect 3. S...

Q: Based on reaction 1, determine the configurations of all chiral centers. Reaction 1 and target molec...

A: The explanation of the following is:  

Q: CH3 CH, HC- -CH-CH,-CH=C-CH,-CH, ČH, CH, Give the following: parent name: substituents IUPAC NAME

A:

Q: 8) You have a solution of 0.200M of glucose (C6H12O6). (5pts) a) What volume of the solution above c...

A: Molarity = moles ÷ volume (L)  By using this formula, we can find the volume.

Q: Question 5 of 50 -/1 > View Policies Current Attempt in Progress When (S)-2-bromopropanoic acid [(S)...

A:

Q: Dilution A. How many mL of concentrated nitric acid, HNO3, that is 12M do you need to make 500 mL o...

A: Given -> M1= 12 M M2= 1.5M V2=500ml

Q: Solution pH [H3O'] Solution [H30*] calculated pH calculated Boiled (but cooled) Boiled (but cooled) ...

A: PH = -log [H3O+] Where [H3O+] = concentration of H3O+ Then  [H3O+] = 10-PH  

Q: Between O*C and 30 degrees * C mercury has a specific heat of 0.138 J/g C. If 200 J of heat are remo...

A:

Q: Which alkene has (E) configuration? а. b. c. d.

A: E–Z configuration is the method of describing the absolute stereochemistry of double bonds.

Q: In the design of H2 antagonist, the polar guanidine group was proposed to interact with the antagoni...

A: Introduction :  Drug design is the inventive process of finding new medications based on the knowled...

Q: PROBLEM SOLVING NUMBER 2 only

A:

Q: In the system NaCl-H2O, a simple eutectic is observed at −21.1°C for a solution containing 23.3% by ...

A:

Q: activity 1. Problem Solving Directions: Calculate the AS for each given reaction. Show your complete...

A: Change in entropy ΔS0 for a reaction is given by,      ΔS0rxn  = Σ S0products - Σ S0reactants     

Q: Calculate the work, in joules, done by a gas as it expands at constant temperature from a volume of ...

A:     A gas at 6.00 atm pressure and constant temperature expands against an external pressure of 4.00...

Q: experiment: ELECTROPHILIC AROMATIC SUBSTITUTION: SYNTHESIS OF METHYL 3 NITROBENZOATE 2. If excess el...

A:

Q: 1. Calculate the vapor pressure of a mixture containing 35.6 g of glucose and 5 mL of ethanol at 25°...

A: Given :-  Mass of glucose, C6H12O6 = 35.6 g  Volume of ethanol, C2H6O = 5 mL  Temperature = T = 25 °...

Q: А. Еxpand and Name а. С6Н14 b. C3H6 с. СНЗСНСНСНЗ d. CH2-CH(CH2)4CHЗ B. Condense and Name CH;CH,CHCH...

A: For naming of organic compounds at first position of substituents are written followed by name of su...

Q: synthesis of Dibenzalacetone (A) In this lab you will need to determine the amounts of the reactants...

A:            Number of moles of acetone = 0.0125 mol            Molecular weight of acetone = 58 g/mol...

Q: Will mixing 100. mL of 0.10 M HCl and 100. mL of 0.30 M

A:   Buffer solution :  the solution which resists its pH by addition of small amount of strong acid (o...

Q: Which has the LEAST negative heat of combustion among the compounds below? Select one: a. "tBu Ob. *...

A: Amount of heat need to completely burn the one mole of compound is known as heat of combustion of th...

Q: Arrange the measurements in ascending order: 0.001 m, 0.001 km, 1 pm, 0.1 mm, 10 cm, 100 um, 1000 nm

A: Arrange the measurements in ascending order--

Q: e molar mass C

A:

Q: PROBLEM 2: Below is the reaction for the formation of acid rain due to high concentration of atmosph...

A: The formula of pH is :-  pH = -log [ acid] 

Q: 7.37 Which product (or products) would you expect to obtain from each of the following reactions? In...

A: We have to solve I,j and k and find out the major product 

Q: What is the order of the graph? FO Figure 1 O D) 7 O B) 5 O A) 4 O C) 6

A: ORDER OF GRAPH IS THE NO OF VERTICIES.

Q: How many unpaired electrons are in [ Fe { C triple bond CSi(CH3)3}64-]  please explain completely

A: Unpaired electrons is zero. (0)

Q: 2. Determine Michaelis-Menten parameters Vmáx and KM for the reaction [ urea,urease]* k2 k3 2NH3 + C...

A:

Q: Given the reaction: PCl3(g) + Cl2(g) ⇌ PCl5(g) Kc = 24.3 Suppose the system at that particular tempe...

A:

Q: Explain the difference between the experimentally derived rate of reaction and a theoretical one. Us...

A: A question based on kinetics of reactions in solution that is to be accomplished.

Q: 5g of H2 is reacted with 6g of O2, what is the expected mass of the product? and how many grams is l...

A: Limiting reagents:

Q: ne overall order

A:

Q: What is the molarity of solution that contains 30g of NaOH in 500ml of a solution?

A:

Q: what is the ftir interpretation of 1-chloro-1-methylcyclohexane?

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.