Hi, just like to check my answer with someone for the this question
calculate y"+9y=H(t-1) y(0)=0 y'(0)=-2 using laplace method
H is heaviside fuction
my solution:
y=cos(3t)-2sin(3t)/3 + H(t-1)/9(H(t-1) + cos (3t-3) )
thanks
am really stuck on this problem, can't seem to get to the right answer
Homework Statement How many mL of a 3.00 M HCO3- solution must be added to 200 mL of a 0.200 M CO32- solution to make a buffer with pH = 10.30?
Answer. 13.96 mL
Homework Equations
pKa + log([base]/[acid])=pH
HCO3(-) -->...