If 100 g of glycerine, C3H8O3 (MM = 92 g) is mixed with 150 mL of water
admin If 100 g of glycerine, C3H8O3 (MM = 92 g) is mixed with 150 mL of water, what is the vapor pressure of solution at 25°C (P° H2O at 25°C…
admin
What volume of 0.5 M HCl must be diluted with water to give 2.0 liters of 0.2 M HCl
What volume of 0.5 M HCl must be diluted with water to give 2.0 liters of 0.2 M HCl? The correct answer and explanation is : To solve this dilution…
What will be the percent composition by weight of a solution made by dissolving 12.0 g of Zinc nitrate
What will be the percent composition by weight of a solution made by dissolving 12.0 g of Zinc nitrate, Zn(NO3)2 in 45.0 g of water? The correct answer and explanation…
A sulfuric acid solution has a density of 1.73 g/mL and contains 80% H2SO4 by weight
A sulfuric acid solution has a density of 1.73 g/mL and contains 80% H2SO4 by weight. What is the molarity of this solution? The correct answer and explanation is :…
In Wikipedia, look up “Stratovolcano” and answer this question
In Wikipedia, look up “Stratovolcano” and answer this question: How do stratovolcanoes formed? a. By successive lava flows b. By successive piles tephra c. By alternate lava flows and tephra…
What Are the Characteristics of an Internal Hard Disk
What Are the Characteristics of an Internal Hard Disk? The correct answer and explanation is : An internal hard disk drive (HDD) is a data storage device found within computers…
Sodium bicarbonate is commonly used to absorb odor
Sodium bicarbonate is commonly used to absorb odor. It’s solubility is 9.6 g/100g H2O at 30 degrees C and 16g/100g H2O at 60 degrees Celsius, 9.2 g of baking soda…
Calculate the boiling point and freezing point of a 20% aqueous sucrose C12H22O11 (MM= 342 g) solution
Calculate the boiling point and freezing point of a 20% aqueous sucrose C12H22O11 (MM= 342 g) solution. The correct answer and explanation is : To calculate the boiling point and…
What is the molarity of a 500 mL solution that contains 5.0 grams of NaOH
What is the molarity of a 500 mL solution that contains 5.0 grams of NaOH? The correct answer and explanation is : To calculate the molarity of a solution, we…
Which of these scenarios means that a pretest-posttest design with a non-equivalent control group is not suitable
Which of these scenarios means that a pretest-posttest design with a non-equivalent control group is not suitable? Select all that apply.a. All of the available participants will be receiving the…