What is the percent by mass concentration of NaCl in a solution that is prepared by adding 15.0 g of NaCl to 90.0g of water?

Q: Gee twee moontlike [1,2]-herrangskikkings- reaksieprodukte waar h alkielgroep migreer vanaf die volg...

A: The reaction given is,  

Q: The value of AH° for the reaction below is -126 kJ. The amount of heat that is released by the react...

A: Given reaction is : 2Na2O2 (s) + 2H2O (l) → 4NaOH (s) + O2 (g) Standard change in enthalpy of the re...

Q: How many grams of water can be heated from 26.1°C to 38.4°C by the heat released from 80.8 g of copp...

A:

Q: Which of the following is an aldol condensation product derived from the self-condensation of 2-buta...

A: ->Carbonyl compound on Aldol condensation reaction give beta hydroxy carbonyl .

Q: In the following relationships, which quantities are variables and which are fixed: (a) Charles's la...

A:

Q: A 0.035 M solution of a weak base is 0.022% ionized. X Incorrect. Did you divide by the 100% percent...

A:

Q: Which diene and dienophile would react to give the following Diels-Alder product? CN CN

A:

Q: A A Me -Me

A: Answer : A is the most stable alkene.  Because this alkene is more substituted and have more number ...

Q: How many grams of KOH are present in 35.0 ml of 5.50 M solution? Atomic Masses:K = 39.10; 0 = 16.00;...

A:

Q: Consider the following reaction at 25.0 degree Celsius. 1) If the initial concentration of [Hg(OH)2]...

A: Answer: With the help of given data, first of all find out order of reaction and then using the inte...

Q: please explain

A: In biochemistry the Michaelis-Menton equation is very useful equation for the enzymes kinetics. This...

Q: Calculate (H30+] for a solution with a pH of 7.59. Express the concentration using two significant f...

A: Given, pH of the solution = 7.59 [H3O+] = ? The formula used here is pH = -log[H3O+] [H3O+] = 10-pH

Q: The equilibrium constant for the reaction Br2(g) + Cl2(g) ↔ 2BrCl (g) is 86. If the initial concentr...

A:

Q: 8,9

A: Question 8: Element B has 1 valence electron, therefore it can conduct electricity. Hence, it is a C...

Q: 0. Toilet bowl cleaners often contain hydrochloric acid to dissolve the calcium carbonate deposits t...

A: Given that,  Mass of HCl = 5.8 g  We need to find the mass of CaCO3 in grams that can be dissolved b...

Q: Suppose a 500. mL flask is filled with 0.50 mol of N, and 0.90 mol of NO. This reaction becomes poss...

A: The equilibrium reaction given is, => Given: Volume of flask = 500.0 mL = 0.500 L               ...

Q: What quantity in moles of HCl are there in 87.5 mL of 0.350 M HCl?

A: Molarity is a concentration term for a solution. The molarity of the given solution is defined as th...

Q: H3C a. H3C .CH3 CH3 b. H3C° H3C *OH с. HO HOʻ

A:

Q: set up end up with an equilibrium concentration of [Fe(SCN)]2+ of 8.3x10-5 M. Based on these results...

A:

Q: Which gas is the most appropriate mobile phase for GC? Не 02 CH4 O H2

A: Given, gas chromatography

Q: 10. Nitrous acid (HNO2) is a weak acid with a Ka = 4.0 x 104. If 112 mL of a 0.100 M KOH solution wa...

A: Answer: In this question we have to find out the pH of a buffer solution made of nitrous acid and it...

Q: 1. Benzoic acid is a weak carboxylic acid that undergoes proton transfer with water. When a 0.125 M ...

A:

Q: Which arrow-pushing mechanism best explains activation of acetyl chloride for Friedel-Crafts acylati...

A: The arrow pushing mechanism that best explains the activation of acetyl chloride for friedal crafts ...

Q: Experiment 2: Investigating the Properties of Buffer Solutions   Test Data:  pH of Cola Solution ...

A: We are given titration data for the addition of cola(pH = 2.5, acid) and borax solution(pH = 9.7, ba...

Q: How many mL of 55% by mass ethanol (density =0.952) is needed to mix with 620 mL of 70% by mass etha...

A: Answer: In this question we have to calculate the mass of the solution and mass of ethanol in terms ...

Q: 3. Use the balanced equation below to answer questions a-d. 4 NH3(2) + 3 O22) 2 N2 + 6H2O a. How man...

A: To solve this problem we will use the given balanced chemical equation .

Q: Use the following two titration curves to answer each of the following statements. Select the choice...

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for...

Q: When a different isomer of the starting chloride is used, the exact same product is observed despite...

A:

Q: 1. Do the following: a) name the type of cell (electrolytic or galvanic), b) indicate the direction ...

A: Oxidation is accompanied by the loss of electrons and reduction is accompanied by gain of electrons....

Q: A chemist titrates 80.0 mL of a 0.1023 M butanoic acid (HC,H,CO,) solution with 0.4765M KOH solution...

A: In this question we will do an acid-base reaction between butanoic acid which is a weak acid and KOH...

Q: 3) When discovered, Miescher found that the nuclei of pus cells were acidic. We now know that the ch...

A: DNA is formed of a double helix strands, where each strand is composed of sugar moieties and phospha...

Q: An 804. g solution of Kool-Aid contains 377. g of water. What is the mass percent of Kool-Aid mix in...

A:

Q: ges SiructurC add 1onc pan charges Select Draw Rings More Erase Select Draw Rings More Erase Reset D...

A:

Q: 7. Classify each process as exothermic or endothermic and indicate the sign of AH°rxn. a. ice meltin...

A:

Q: The following table shows data from the titration of four 10.0 mL samples of a solution containing h...

A: a.) First we would Calculate volume of NaO* added using formula :  Volume of NaOH added = Final bure...

Q: 3. Circle the alkene that is most electron rich. A В Ме Ме Me Me Me -Me Me Ме

A: The alkene having more electron density is electron rich alkene.

Q: Experiment 2: Investigating the Properties of Buffer Solutions   Test Data:  pH of Cola Solution 2...

A: We are given titration data for the addition of different volumes of cola(pH = 2.5) and borax soluti...

Q: 1. Do the following: a) name the type of cell (electrolytic or galvanic), b) indicate the direction ...

A:

Q: Be sure to answer all parts.The equilibrium constant (K) for the formation of nitrosyl chloride, an ...

A: In this question, we have to find Qc for the given case.

Q: Consider the I-131 nucleus that is used to treat thyroid. Mass of I-131 is 130.78302 amu. 1) If the ...

A: We have to used equation of first order rate constant. As we know nuclear reaction follows first ord...

Q: What response best explains why the following molecule cannot be synthesized using the malonic ester...

A: The malonic ester synthesis is a chemical reaction where diethyl malonate is alkylated at the carbon...

Q: If 200 g of 40.0% by mass methanol is combined with another methanol solution to produce 500 g of 52...

A: 40% methanol  by mass means 100 g of solution contains 40 g of nethanol. Amount = Mass of solution ×...

Q: Use the data in the table to calculate the equilibrium constant K for the following reaction at 95 "...

A:

Q: Use the data at 25°C given below to calculate the value of AG°rxn for the reaction shown when it tak...

A: The change in Gibb's free energy is calculated by the change in enthalpy of the reaction and the cha...

Q: The pKa of acetic acid, HC2H3O2 is 4.58. A buffer solution was made using an unspecified amount of a...

A:

Q: Provide reagents/conditions to accomplish the following syntheses. More than one step is required in...

A:

Q: 8. The equation for the combustion of methane, CH4 (the main component in natural gas) is shown belo...

A:

Q: A pressure of 150 KPa is equivalent to how many meters of water? Of mercury (sHg = 13.6)?

A:

Q: Which statement correctly describes the meaning of the value of ΔG°rxn for a reactant-favored reacti...

A: Gibbs free energy is associated with work done

Q: initial change equilibrium

A:

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.