Saturday
May 18, 2013

# Posts by kathleen

Total # Posts: 107

Chemistry
THANKS!

Chemistry
Thanks! So the antifreeze one doesn't have anything to do with vapor pressure?

Chemistry
What colligative properties are displayed by these situations. 1. Antifreeze is added to car cooling system preventing freezing when air temp is below 0 degrees C. 2. Ice melts on sidewalk after salt has been spread

algebra
X^-6 times X^5= X^-1 (add exponents -6 + 5=-1 X to the negative 1 can be rewritten 1/X so you have only postitve exponents. Y^-12 divided by Y^5 = Y^-17 (subtract exponents -12-5=-17) So Y^-17=1/Y^17

Science
The half life of carbon 14 is 5700 years. So If a fossil is 5700 years old then half of the carbon-14 is left.

Algebra
what is the solution to 2(-5y cubed)squared + (-3ycubed)cubed

Child care
#. additional space for children could provide in classoom 3 with the additional of A. a closet B. counters and storage underneath c.cubbies D. a loft

social studies
Why does the President as commander-in-chief of the armed forces?

science
What is one animal that lives in the rainforest and what is it's adaptation?

science
I guess I'm missing something here...but I've approached this question in every possible angle and im just not getting it! Could somebody point me in the right direction? Here is the question: If the measured net radiation (Q*) for the lawn of your home in August is 70...

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