Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
The density of toluene (C7H8) is 0.867 g/mL, and the density of thiophene (C4H4S) is 1.065 g/mL. A solution is made by dissolving 23.0 g of thiophene in 250.0 mL of toluene.
Calculate the mole fraction of thiophene in the solution?Calculate the molality of thiophene in the solution?
What is the pH of a sodium formate solution prepared by adding 0.680 grams of sodium formate to 100.0 ml of water at 25.0 oC? The Ka at 25.0 oC for formic acid is 1.8 × 10-4.
Nitric acid is usually purchased in a concentrated form that is 70.3% HNO3 by mass and has a density of 1.41 g/ml. How much concentrated solution would you take to prepare 1.05 L of 0.100 M HNO3 by mixing with water
Ammonia gas and hydrochloric acid vapor undergo a reaction to produce solid ammonium chloride. The reaction equation is given below together with relevant thermodynamic data at 298K
Acetic Acid is a weak acid with a Ka value of 1.8x10^-5. What concentrationof acetic acid is needed to produce a [H+] of 3.5x10^-4?
A gas mixture contains oxygen and carbon dioxide. The partial pressure of oxygen is 0.450 atm. The partial pressure of carbon dioxide is 675 mm Hg. If argon gas added to the mixture causes the total pressure to become 2410 torr,
An unknown gas contains 82.6% C and 17.4% H by mass. It effuses at 0.87 times the rate of CO2 gas under the same conditions. What is the molecular formula of the gas
What are the [H3O+] and the pH of a propanoate buffer that consists of 0.48 M CH3CH2COONa and 0.34 M CH3CH2COOH? Ka of propanoic acid = 1.3 multiplied by 10-5.
Calculate the Ecell for the reaction below when [Zn2+] = 1.00M, [H+] = 1.00 x 10-6 M and PH2 = 1.00 atm Zn (s) + 2H+ ----> Zn2+ + H2 (g) a.+0.76 V b. + 0.64 V c. + 0.41V d. + 0.053 V e. + 1.12 V
If a buffer is made up to be 1.0M in acetic acid and 1.0 M in sodium acetate, predict how much acid will be required to change the pH of 100mL of the buffer by 0.1 pH units.
An endothermic chemical reaction with ?E = +41 kJ/mol has an activation energy of +95 kJ/mol. What is the activation energy for the reverse reaction
A 7.75-L container holds a mixture of two gases at 37 °C. The partial pressures of gas A and gas B, respectively, are 0.209 atm and 0.735 atm. If 0.130 mol a third gas is added with no change in volume or temperature, what will the total pressure ..
A solution contains 4.64g KCl in 178 mL of solution. The density of the KCl solution is 1.14 g/mL. What is the molarity,M, for the potassium chloride solution?
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd