Homework Statement
Calculate the boiling point (in degrees C) of a solution made by dissolving 7.49 g of urea {CO(NH2)2} in 28.0 g of water. The Kbp of the solvent is 0.512 K/m and the normal boiling point is 373 KHomework Equations
Delta Tf = (i)(m)(Kbp)The Attempt at a Solution
Kbp= 0.512...
wow thank you so much. This explanation gave me the correct answer. I really appreciate your help a lot. This is part of our exam review. If I didn't know how to solve this problem I would miss it. I can't afford not knowing something b/c we only have 20 questions total. I need an A on tomorrow...
This is the question:
How many phosphorus atoms are contained in 8.75 moles of H2P2O7? Put your answer in E-format with 1 number before and 2 numbers after the decimal place. e.g., 6.02 x 1023 would be input as 6.02E23.
the answer is : 1.05E25 (1.05 × 1025)
I really have no idea...
[SIZE="5"]acp=v2/r
solve (12square)/(35)= 4.11
This is not the answer because in the back of the book it say that the answer is 19m/s.
What other way can I solve this problem?
Question 1:
At what speed must you go over a speed bump if people in your car are to feel weightless?
car speed V=12m/s
bump radius 35m
I don't know how to approch this problem. please help?
Question2:
A 0.075kg toy airplane if tied to the ceiling with a string. When the airplane's motor is...
ok so
the accerleration= 1.22 m/s square
can I use
(x=finial y postion) = (Xo=initial y postion) + (Vox= initial velocity of X component)(t=time) + 1/2(a=accerleration)(t=time)square
X = Xo + Voxt + 1/2 a t^2Can I use this to find where the jet is at 7.5 second later?
I need help on this one homework problem.
A 747 jetliner lands and begins to slow to a stop as it moves along the runway. If its mass is 3.50 x 10^5 kg, its speed is 27.0 m/s, and the net breaking force is 4.30 x 10^5 N,
a) what is it speed 7.50s later
b) How far has it traveled in this...