3 attenpts iet C Check my work Enter your answer in the provided box. How many...
Enter your answer in the provided box. How many grams of sucrose (C12H22O11) must be added to 677 g of water to give a solution with a vapor pressure 0.787 mmHg less than that of pure water at 20°C? (The vapor pressure of water at 20°C is 17.5 mmHg.)
How many grams of sucrose (C12H22O11) must be added to 487 g of water to give a solution with a vapor pressure 0.871 mmHg less than that of pure water at 20°C? (The vapor pressure of water at 20°C is 17.5 mmHg.)
HM 202-001 HW Chapter 12 Question 3 (of 14) value: 0.00 points 2 attempts left Check my work Enter your answer in the provided box. How many grams of urea I(NH2)2CO] must be added to 495 g of water to give a solution with a vapor pressure 2.41 mmHg less than that of pure water at 30°c? (The vapor pressure of water at 30°C is 31.8 mmHg.) References eBook & Resources Multipart Answer Difficulty: 2 Difficulty: Medium
Question 8 (of 20) value: 5.00 points 3 attempts left Check my work Enter your answer in the provided box. The rate constant of a first-order reaction is 3.85 x 10-4 s-1 at 350.0C If the activation energy is 129 kJ/mol, calculate the temperature at which its rate constant is 9.60 x10s-1 References eBook & Resources Multipart Answer
3 attempts left Check my work Enter your answer in the provided box. A sample of chlorine gas occupies a volume of 823 mL at a pressure of 609 mmHg. Calculate the pressure of the gas (in mmHg) if the volume is reduced at constant temperature to 215 mL. Enter your answer in scientific notation. mmHg
16 Question 14 (of 20) value 5.00 points 3 attempts left Check my work Be sure to answer all parts. Caleulate the solubility in g/L of AgBr in (a) pure water and (b) 0.0065 M NaBr. ยูโ x 10L Enter your answer in scientifie notation) References eBook & Resources culty Multipart Answer 16 Question 14 (of 20) value 5.00 points 3 attempts left Check my work Be sure to answer all parts. Caleulate the solubility in g/L of AgBr in...
2.50 points 3 attempts let Check my work Enter your answer in the provided box. The ebserved rotation a of a 0.3 g sample of (+2-butanol in 15 mL of chloroform in a 10 em polarimeter tube is 0.270°. Calculate the specific rotation of (+)-2-butanol. la]- References eBook & Resources 2088 44 17 4 6 8 0
points attempts left Check my work Enter your answer in the provided box. -1 The rate constant of a first-order reaction is 3.00 x 10 s 145 kJ/mol, calculate the temperature at which its rate constant is 7.65 x 10 S at 350.°C. If the activation energy is References eBook & Resources
a) The vapor pressure of pure water at 30°C is 31.8 torr. An aqueous solution of urea had a vapor pressure of 29.3 torrat the same temperature. What is the mole fraction of urea in the solution? b) How many grams of sucrose, C12H22O11(MW=342), must be dissolved in 552 g H2O (MW=18.016) to give a vapor pressure 2.0 torr lower than of pure H2O at 20°C? The VP of H2O at 20°C is 17.5 torr.
WILL GIVE THUMBS UP 3 attempts left Check my work Enter your answer in the provided box. points A sample of 0.5760 g of an unknown compound containing barium ions (Ba) is dissolved in water and treated with an excess of Na,C0y. If the mass of the BaCO, precipitate formed is 0.5343 . what is the percent by mass of Ba in the original unknown compound? ebook Print References 3 attempts left Check my work Enter your answer in the...