Simplify. (5x2 + 3x - 7) - (x2 - 7x + 4) Simplify. (5x^2 + 3x - 7) - (x^2 - 7x + 4) distribute - sign to get -x^2 +7x -4 put on top of one another and add 5x^2 + 3x - 7 -x^2 + 7x - 4 ------------- 4x^2 +10x -11
December 16, 2006
Given the following equation: SO2 + NO2 <--> SO3 + NO At 25 Celcius, 2.00 mol of each of SO2 and NO2 are introduced into a 1.0L sealed flask. When euilibrium is reached, it is found that [NO2] = 1.30 mol/L [SO3] = 1.30 mol/L -- Calculate the concentration at equilibrium ...
November 8, 2006
acids and alkalis
the only acids and alkalis i know is acid: batterys? acid rain lemon and orange alakalis: toothpaste mouthwash shampoo detergents and soap can someone plz help me to add more to my list? thnx if you do i rly need it for my upcoming science test and the more that i collect the ...
November 4, 2006
MATH - PLEASE HELP!
Need help with combining like terms How do I figure this out... 11+5t^2+t+6t If anyone can help I would really appreciate it. I helped BELOW!!!LOL See the answer below which I posted as a correction to the answer provided by Margie and Dr Phil. The correct answer to this post ...
November 2, 2006
Can anyone help with combining like terms? The question - 11 + 5t^2 + t + 6t. I don't have a clue were to begin. Wouldn't it be toget all the T's together? Would 5t^ go with it also since it is an exponent? I think so I am not sure but I think it would be that.Let ...
November 2, 2006
If 100. g of iron at 100.0 C is placed in 200. g of water at 20.0 C in an insulated container, what will the temp, C, of the iron and the water ( C value is 4.18) when both are at the same temp? The specific heat of iron is 0.444 KJ/Kg C ---- steps would be appreciated... ...
September 15, 2006