Tuesday
May 21, 2013

Posts by jeremy


Total # Posts: 220

chemistry
what is the change in temperature if 24g of water at 50 degrees C absorbs 985j of heat energy

Math
a 55 kg skateboarder on a 3 kg board starts coasting on level ground at 8 m/sec. Let k=3.2 kg/sec. About how far will the skater coast before reaching a complete stop?

Math
with x = hours at first job and y = hours at the second job y <= 25 - x which is the amount of hours you can work at the same time, y >= (150/8)- (5/8)x is the amount of money you want to make if you graph both of these equations, you can find the range you should use.

Chemistry
How do the following solutions show the properties of a buffer? 1) 50 ml 0.10 M NH3 + 50 ml 0.10 M NH4NO3 2) 10 ml solution #1 + 5 ml H2O + 1 ml 0.10 M HCl 3) 10 ml solution #1 + 6 ml 0.10 M HCl 4) 10 ml solution #1 + 5 ml H2O + 1 ml 0.10 M NaOH

Math
Principal 450.00 x interest rate 9.25 x compounded monthly x 4 years

math
the letters g and g stand for numbers. if g + 9=h + 9, what is true about g and h?

precalculus
A rectangular field is to be enclosed by a fence and divided into three equal rectangular parts by two other fences. find the maximum area that can be enclosed and separated in this way with 1200m of fencing.

Physics
I'd like to know when it is appropriate to use each formula. Im new to studying physics and its seems that there are certain situations when one formula leads to the answer, yet a derivative of that formula that should lead to the answer is incorrect. For example: the ques...

math 6
write an expression in terms of x for the perimeter of an isosceles triangle with 2 sides of 6 cm and a third side of 2x cm.

chemistry
What is the pH of pure water in equilibrium with 1 atmosphere of carbon dioxide at 25˚C? (Hint, what does 1 atmosphere of CO2 mean?)

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