Saturday
December 7, 2013

# Posts by smith

Total # Posts: 81

chemistry
Under certain conditions, neon (Ne) gas diffuses at a rate of 7.0 centimeters per second. Under the same conditions, an unknown gas diffuses at a rate of 4.9 centimeters per second. What is the approximate molar mass of the unknown gas?

algebra II
If a pro basketball player has a vertical leap of about 25 inches, what would his hang time be? Use V=48T^2 Answer:_______seconds.

Eurpoean History
Late 1800s to early 1900s

Eurpoean History
How did imperial forces entice resistant countries into submission? What role did the promise of democracy play? In your opinion, was this promise kept? Why or why not?

algebra
sarah has dimes and nickels which total \$1.65. the number of nickels she has is 3 less than the number of dimes. how many of each does she have?

math
i posted a different question. why did they get deleted?

math
two planes take off from an airport at the same time and head in opposite directions at 260 mph and 275 mph respectively. in how many hours will they be 1605 miles apart?

math
a coast guard ship left the port at 30 mph. four hours later a helicopter was dispatched at 90 mph to intercept the ship. how long will it take the helicopter to catch the ship?

algebra
an insecticide originally contained 1/2 oz of pyrethrins. the new formula contains 5/8 oz of pyrethrins. what percent of pyrethrins of the original formula does the new formula contain?

algebra
Solve by elimination 7r-5s=41 5r+7s=61

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