Vant hoff factor for mgcl2
What is the freezing point in Celsius of a solution prepared by dissolving 6.20 g of MgCl2 in 110 g of water? The value of Kf for water is 1.86 (C*kg)/mol), and the van't Hoff factor for MgCl2 is i = 2.7.d
Expected delivery within 24 Hours
What mass of water would you need to evaporate from your skin in order to dissipate 1.7 x 10^5 J of heat from your body? H2O(l) -> H2O(g) delta H vaporation = 40.7 KJ/mol.
Calculate the ΔH for the reaction above using the data provided. (Hint: you need to calculate q rxn then convert it into kJ/mole)
A balloon filled with 27.3 mol helium has a volume of 612. L at 0.0°C and 1.00 atm pressure. The temperature of the balloon is increased to 33.0°C as it expands to a volume of 686. L, the pressure remaining constant.
A sample of hydrogen was collected over water at 23oC and an atmospheric pressure of 735 mmHg. What is the pressure of the hydrogen gas collected in a 568 mL container?
A 1004.0 g sample of calcium carbonate that is 95% pure gives 225 L of carbon dioxide at STP when reacted with an excess of hydrochloric acid. What is the density in g/L of the carbon dioxide?
Water and 8.00 mol/L potassium nitrate solution are mixed to produce 700 mL of a solution with a concentration of 6.00 mol/L. What volumes of water and potassium nitrate solution are used?
Translate the following word equations into balanced chemical equations and explain how the equations represent what happens in grid spaces a and g.
The term vapor pressure almost always means the equilibrium vapor pressure. What pysical arrangement is needed to measure vapor pressure?
1936089
Questions Asked
3,689
Active Tutors
1417121
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
What are the challenges for mental health professionals working with colleagues or supervisors who are best characterized
In reflecting on a time when I felt frustrated by a young child's behavior, I recall a particular instance during a group activity at a daycare
What was the economic impact of COVID-19? Address any monetary and fiscal policies used during or after COVID-19.
Go to Stars - "Les Miserables" Read the synopsis just above the video clip, then view the clip in its entirety.
Describe the responsibilities of a financial analyst. Discuss the importance of analyzing and managing finances to help make business decisions.
Explain why financial statements are important to a business and how they help a business determine its financial health.
Cognitive complexity is the ability to view situations from multiple perspectives rather than assuming that one's own viewpoint is the only valid interpretation