Friday
December 19, 2014

Posts by Brennan


Total # Posts: 16

Chemistry
Acetone has a delta Hvap of 29.1 kj/mol and a normal boiling point of 56.2 degrees Celsius. At what temperature (in degrees Celsius) does acetone have a Pvap = 118 mm Hg?
March 19, 2013

math
(x-3)/(6)-(7)/(15)≤(3x-1)/(10)
November 30, 2012

Math
(x)/(3)+(5)/(6)<(4)/(3)*x
November 30, 2012

Chemistry
A chemical plant uses electrical energy to decompose aqueous solutions of NaCl to give Cl2,H2, and NaOH: 2NaCl(aq)+2H2O(l)-->2NaOH(aq)+H2(g)+Cl2(g) If the plant produces 1.1×10^6 kg (1100 metric tons) of daily, estimate the quantities of H2 produced. If the plant ...
September 27, 2011

Chemistry
Hard water contains Ca ,Mg ,Fe and , which interfere with the action of soap and leave an insoluble coating on the insides of containers and pipes when heated. Water softeners replace these ions with Na. If 1100. L of hard water contains 0.021 M of Ca and 0.0060 M of Mg , how...
September 27, 2011

Chemistry
Hard water contains Ca ,Mg ,Fe and , which interfere with the action of soap and leave an insoluble coating on the insides of containers and pipes when heated. Water softeners replace these ions with Na. If 1100. of hard water contains 0.021 M of Ca and 0.0060 M of Mg , how ...
September 27, 2011

AP PHYSICS
yes it was, but it was wrong. I did )Inital KE + inital PE)- W = (Final KE + final PE) and got 8.2425
November 14, 2010

AP PHYSICS
A basketball player makes a jump shot. The 0.700 kg ball is released at a height of 1.90 m above the floor with a speed of 7.00 m/s. The ball goes through the net 3.10 m above the floor at a speed of 3.70 m/s. What is the work done on the ball by air resistance, a ...
November 14, 2010

AP PHYSICS
I can't manage to add the drawing on this website. But there is no angle on the drawing anyways..
November 13, 2010

AP PHYSICS
A water skier lets go of the tow rope upon leaving the end of a jump ramp at a speed of 14.9 m/s. As the drawing indicates, the skier has a speed of 10.9 m/s at the highest point of the jump. Ignoring air resistance, determine the skier's height H above the top of the ramp...
November 13, 2010

Government.
During the cold war, u.s. relations with the soviet union were dominated by? a. detente b. containment c. foreign aid d. collective security I would say A.
April 17, 2009

Government.
So it would be D then?
April 17, 2009

Government.
In recent decades, the Federal Government has borrowed money mostly to: a - finance special expensive projects. b - provide funds for crisis situations such as wars and national disasters. c - pay the president's salary d - operate the government and pay the previous year...
April 17, 2009

I posted this yesterday and im STILL CONFUSED!
okay so i was given a worksheet with 15 word problems. i couldn't solve 2 so if you could help me out it would be good.. If you ask Catwoman how many cats she has, she answers with the riddle, 'five-sixths of my cats plus seven.' how many cats does she have? Abby, ...
October 20, 2008

Math- brain teasers!
okay so i was given a worksheet with 15 word problems. i couldn't solve 2 so if you could help me out it would be good.. If you ask Catwoman how many cats she has, she answers with the riddle, 'five-sixths of my cats plus seven.' how many cats does she have? Abby, ...
October 19, 2008

Project
I have to come up with some new products or services. Any ideas?
July 8, 2008

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