chem
In the formation of sulfur hexaflouride, does the reaction at constant pressure or volume proceed more spontaneously? I've done the calcs to show that at constant volume, it is slightly more spontaneous, but I can't seem to find a good reason why... it might have someh...
Chem
In thermodynaics, what is the relationship between enthalpy (H) and heat (q) - [at constant pressure]?
Physical Chemistry
In terms of bomb calorimetry, can one assume the temperature of the water surrounding the cmopartment is equal to the temperature within the compartment? If not, how would one determine T for the reaction occuring inside the compartment?
French
Can the words "les hommes du maison" be translated to both "the men of the house" and "the men from the house" or just one of them?
drwls & Damon - maths
hey guys, i follow you up to the point of intergrating the final line. How would I intergrate [x^-2.e^-x] dx thx
Mathematics
Solve the following differential equation, i.e. solve for y: dy/dx - y/x = 1/x + y + 1 I have this so far, 1. dy/dx= (y + 1 + xy + x)/x 2. x dy = (y + 1 + xy + x)dx 3. Integrate both sides... xy + c = xy + x + .5x^2y + .5x^2 + k where c and k are constants 4. c = x + .5x^2 (y ...
French
What is the main linguistical difference between the phrases; 1. Je m'en vais and 2. J'y vais
maths
how would i solve the differential equation dx/dt=-kx^2 i.e. solve for x as a function of t. I've been told to rearrange the equation to yield dx/x^2=-k dt but what can and should I do now?
Math
d/dx x^2+3x = 2x+3
Mathematics
Solve d/dx x(ln(x)-1) I had: =d/dx xln(x) - d/dx 1 =d/dx ln(x)^x =x^(-x-1) [and this is wrong] Can someone show me the correct answer and working please?
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