Recent content by tensirk

Homework Statement You use exactly 3.0 gallons of paint to paint the walls of a room that measures 12 meters long by 12 meters wide by 8.0 meters high. How thick is the layer of paint that you put on the four walls? (No windows or doors) Use the conversion 1 gallon = 3.79 x 10-3m3. Homework...

Homework Statement Which of the following are ways that catalysts can speed up reactions rates? You must check all answers that apply. A.) Increase the activation energy. B.) Decrease the energy of activation. C.) Change the path of the reaction. D.) Speedup the reaction without changing...

Homework Statement The reaction 2NO(g) + O2(g) ---> 2NO2(g) is second order in NO and first order in O2. When [NO] = 1 M and [O2] = 1.9 M, the observed rate of disappearance of NO is 0.00017670 M/s. I have already found the value of the rate constant to be 2. I found that the units of the...

I think I may have gotten it now. Plug in y= x3-8x for both f(t) and f(a) and substitute the numbers of a and t into the equations and then divide by t-a. I got numbers arbitrarily close to -5, so I believe the answer is -5. Once again thanks SO much for all of your help. :)

So, for the first one: Vav= (1.01)^3-8(1.01) - 1 / 1.01 - 1 ? ...that comes out to -804.97 though. Ahh, I'm sorry. I just am having a lot of trouble understanding this for some reason. Thanks so much for your help!

I've learned that, but it's in a later section than the problem I'm dealing with I think. I found a similar problem in my book where the directions state: "Slope of tangent lines: For the following functions, make a table of slopes of secant lines and make a conjecture about the slope of the...

Nope, haven't even gotten that far...this is a problem from literally the first chapter of my book. It's definitely making me feel really dumb.

Homework Statement Find the slope of the curve for the given value of x. y=x3-8x; x=1 a. the slope is -3. b. the slope is 1. c. the slope is -5. d. the slope is 3. Homework Equations Would it be... Vav= s(t)-s(a)/t-a? The Attempt at a Solution I know this is a really simple problem, but I...

Ahh, I've figured it out. Nevermind to this question.

Homework Statement Which of the following conclusions is correct for the change in entropy for this reaction? You must find all of the correct answers. Ag(l) --> Ag(s) (1atm, 25°C) 1. ΔSsys < 0 2. ΔSuniv > 0 3. The sign of ΔSsys cannot be determined. 4. ΔSsys > 0 5. The sign of ΔSuniv cannot...

Yes, but I am kind of unsure as to what "counterclockwise from the (-)(+)x direction" is referring to.

Homework Statement In the sum A+B = C, vector A has a magnitude of 10.0 m and is angled 46.5° counterclockwise from the +x direction, and vector C has a magnitude of 15.0 m and is angled 23.5° counterclockwise from the -x direction. What are the magnitude and the angle (relative to +x) of B...