Wednesday
December 11, 2013

Posts by cynthia

Total # Posts: 511

Statistics
are the following statements, Ho:=10 and Ha:equal to or less than, a valid pair of null and alternative hypothesis?assume that in a hypothesis test with null hypothesis Ho : u = 12.0 at a = 0.10, that a value of 16.0 for the sample mean results in the null hypothesis being rej...

PHYSICS
On the planet jupiter , g is 2.5m/s². What does this mean?

Trig
Find the exact value of tan 5pi/12 using the half-angle identity.

Chemistry
A 0.250g smaple of magnesium-aluminum alloy dissolves completely in an excess of HCl(aq). When the liberated H2(g) is collected over water at 29C at 752torr, the volume is found to be 297mL. The vapor pressure of water at 29C is 30.0torr. What is the mass percentage of aluminu...

Chemistry
why is a water molecule is much more likely to give up a proton than a methane molecule

londontowne
divide the product of 8 and 1/2 by .02

History
Is History an art or a science?

chemistry
why is 1mol of so3 gas higher in entropy than so2 gas

Calculus
A team has been working to convert diesel-powered cars to run just as efficiently on used cooking oil! They want to compare the mileage and speed of their prototype with that of the diesel-powered car. The prototype is 100 meters south of an intersection, while the diesel car ...

Calculus
Part of a circuit has two resistors connected in parallel as shown in the figure. R(1) is a constant resistor of 10 ohm, while R(2) is a variable resistor with resistance that varies at a rate of 2 ohms per minute. The total, or effective, resistance, R, provided by this circu...

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