Thursday
December 12, 2013

Posts by teresa

Total # Posts: 199

Math
If teacher x gives a pop quiz on Monday and then every five classes, and teacher y gives a pop quiz on Monday and then every six days, how many school days will it be until both give quizzes on the same school day

physics
A thin spherical shell of mass 4.00 kg and diameter 0.200 m is filled with helium (density ρ = 0.180 kg/m3). It is then released from rest on the bottom of a pool of water that is 4.00 m deep. (a) Neglecting frictional effects, show that the shell rises with constant acc...

physics
Given that the tank is shaped like a right circular cylinder with a height of 30 m and with a base radius of 10m. The tank is attached to a steel cable of negligible mass and immersed in water. Calculate the tension (force) in the cable before and after it is immersed in water.

physics
A storage tank of negligible mass and 30 m high is filled with gasoline

college chemistry
I understand that is the equation but I can not figure out how I get the numbers. I know the equation is ph= pka + log [salt]/[acid] I know pka is -logKa but I do not know how to get the numbers for the [salt] or the [acid] to divide. I have an extremely HORRENDOUSLY bad colle...

college chemistry
What is the ratio of KC2H3O2 and HC2H3O2 in a buffer with a pH of 5.25? Ka = 1.8 x10-5?

chemistry
Which of the following quantum numbers describes the shape of an orbital? A) principle quantum number (n) B) magnetic quantum number (ml) C) spin quantum number (ms) D) Schrodinger quantum number (S) E) (azithmal) angular momentum quantum number (l)

AP Calculus AB
A river boat company offers a 4th of july trip to an organization with understanding that there will be at least 400 passengers. each ticket is \$12, and company agrees to refund \$.20 to every passenger for each 10 passengers in excess of 400. find the number of passengers that...

chemistry
Given the following reaction and enthalpy change, calculate the amount of heat for converting 100.4g of liquid water (18.02g/mole) to a vapor? delta H= +44kJ

chemistry
How much heat is required to warm 250.4 g of water from 22.6 C to 75.8 C given that the specific heat capacity of water is 4.184 J/gx degrees C?

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