Monday
December 9, 2013

Posts by brandon

Total # Posts: 945

Physics
An unknown mass is suspended by a string from one end of an uniform stick which has a mass of 120 g. In order to balance the stick, it must be supported one third of its length away from the mass. the unknown mass is therefore?

Chemistry
A tank contains Ar at 1.33 atm and Kr at 3.59 atm. We add enough Xe to give a total pressure of 6.3 atm. What is the partial pressure of the Xe?

Chemistry
A 3.43 L flask is filled with carbon monoxide at 27 °C until the pressure is 8.31 atm. Calculate the total pressure after 2.09 moles of carbon dioxide has been added to the flask. (R=0.082 L-atm/K mol)

chemistry
Calculate the partial pressure of propane in a mixture that contains equal numbers of moles of propane (C3H8) and butane (C4H10) at 20 °C and 505 mmHg. (R=0.082 L-atm/K mol)

Math
Using h(t)=gt^2+v0t+h0, where g= -16, h0= initial height, v0= initial velocity, and t= time A rocket is fired into the air from the top of a building that is 200 feet tall. The initial velocity of the rocket is 600 feet/sec. If necessary, round answers to the nearest hundredth...

Physics

math
brenda is twice as old as warren. jim is 10 years older than warren. jim is 25 years old. write an equation using the variable b to represent brenda's age and the variable w to represent warrens age

Spanish
Te gustan Los coches pequenos?

Math
How do you do \$1.00 for 6 lemons ?

math pre calc
well you minus 8^6 to the other side and solve for x

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