Tuesday
December 10, 2013

# Posts by becca

Total # Posts: 295

Chemistry
A sample of steam with a mass of .550 g and at a temperature of 1 degrees C condenses into an insulated container holding 4.40 g of water at 5.0 degrees C. Assuming that no heat is lost to the surroundings, what will be the final temperature of the mixture?

chemistry
How much energy (in kJ) is released when 16.4 g of steam at 121.5 degrees C is condensed to give liquid water at 60.5 degrees C? The heat of vaporization of liquid water is 40.67 kJ/mol and the molar heat capacity is 75.3 J/(K*mol) for the liquid and 33.6 J?(K*mol) for the vapor.

algebra
I need help breaking down the steps to solve HELP ME PLEASE solve with an exact answer. x^2 + 2x - 8

Quadraitic equations
Thank you so much and I definetly need to review how to factor equations<<<good night and sweet dreams>>>thank you for helping me

Quadraitic equations
Can you show me the steps please???? to solve this equation.

Quadraitic equations
solve with an exact answer. x^2 + 2x - 8

quadratic equations
can you solve the equation using the quadratic formula x2 + 3x = 7? Explain and provide an exact answer.

algebra
Thanks

algebra
a two part canoe trip,the first part of the trip the canoist traveled 58 miles.Second part of the trip he traveled 18 miles at 5mph slower.the total time for trip was 4 hours.What was the speed of both parts of the trip?

algebra
Thank you!

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