Recent content by izen

thanks
2. Reaction between water and chromium metal

Hi there, How to write the reaction between water and chromium metal under standard (i) acid and (ii) base condition? Cr + 3H2O ----> Cr(OH)3 + 3e- + 3 H+ (acid condition) basic solution ??? Please help
3. The different between the work (PV ) in ΔU and the work (PV ) ΔH

Hi Chet thanks for the answer :)
4. The different between the work (PV ) in ΔU and the work (PV ) ΔH

Hi Chet, I will be waiting for you here. Enjoy your evening. :) Izen
5. The different between the work (PV ) in ΔU and the work (PV ) ΔH

w= -P ΔV in case of constant Pressure, ΔH= (q -PΔV) +PΔV >> ΔH= q So w in ΔU will be the same when constant pressure with Δ(PV) in ΔH ? if the pressure is not constant What is P in ΔU ? is it P external? and what is P in ΔH ? P in ΔH is Pressure of system? in case of ideal gas, Δ(PV) = nRT so...
6. The different between the work (PV ) in ΔU and the work (PV ) ΔH

By definition ΔU = q+PV ΔH = ΔU+PV Well, what are the different between the work (PV ) in ΔU and the work (PV ) ΔH then ? thank you
7. Limit of sequence lim n (1-cos(2/n))

Thanks jbunniii
8. Limit of sequence lim n (1-cos(2/n))

thanks LCKurtz
9. Limit of sequence lim n (1-cos(2/n))

where is 'n' gone?
10. Limit of sequence lim n (1-cos(2/n))

1. Homework Statement 2. Homework Equations 3. The Attempt at a Solution above picture !! Exam in 3 hours :( please help
11. Laplace transform solve integral equation

Thanks lurflurf I got it now :)
12. Laplace transform solve integral equation

u meant put L{y} to the same side and then reverse transform? I'm try that way but still didnt get that answer
13. Laplace transform solve integral equation

1. Homework Statement 2. Homework Equations 3. The Attempt at a Solution The answer is y(t) = t^{4}+\frac{t^{6}}{30} Don't know what to do next any advices please
14. Trigonometry identity sin(pi)cos(wpi)+cos(pi)sin(wpi)

Ohhh :shy: Just been thinking about using trig identity, thank you Dick !
15. Trigonometry identity sin(pi)cos(wpi)+cos(pi)sin(wpi)

1. Homework Statement Hi guys, How can sin(∏)cos(ω∏)-cos(∏)sin(ω∏) = sin(ω∏)? please guide me trigonometry identity to apply with this? 2. Homework Equations 3. The Attempt at a Solution