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mandarin_koala

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buffer is made by mixing 20 ml of 0.1 mol dm-3 CH3COOH & 0.1 mol dm-3 of aqueous NaOH. What vol of KOH is required & the pH of the buffer?
1 AnswerChemistry7 months ago
How do I find the formula for sin5Theta in terms of sin theta using De Maures Theorem?
3 AnswersMathematics4 years ago
Help with a Dynamics question? A particle's motion is dictated by (t^2)/5 i + sin(4t) j metres. (a) Find V and a.?
2 AnswersMathematics4 years ago
This one has me stumped:?
2 AnswersSingles & Dating4 years ago
I know how to use Gaussian Elimination to find the solution, but not the inverse. Can anybody help?
2 AnswersMathematics4 years ago
Can you help me with this ODEqn? My general solution: y(t) =C1 C2*e^(-cx)/m I must sketch solution for initial conditions y(0)=2, y'(0)=-7?
1 AnswerMathematics5 years ago
How do I find the eigenvalues of these? top: 5 8/3 -2/3 Mid: 2 2/3 4/3 Bot:-4 -4/3 -8/3 Then the eigenvectors?
2 AnswersMathematics5 years ago
Can you solve this non homogeneous eq? y"-2y' +4y = 2+3x + sin x?
1 AnswerMathematics5 years ago
find tot electric charge Q of plate bounded by curves, x=1/4, y=0, y^2 =16x; charge density is described by formula p(x,y) =16x+(9y^2 )/2?
1 AnswerMathematics5 years ago
Can someone help me find the general solution for this Differential Equation? m(d^2y/dt^2) + c(dy/dt) + ky = 0. Consider the case c^2 = 4mk?
1 AnswerMathematics5 years ago
Can you help with this Integration (vector) problem? Int[4sin^2(t).cos^3(t)i + 4j - 2sin(t) k] dt I can't integrate cubic trig.?
1 AnswerMathematics5 years ago
Can someone help with this MacLaurin series? Use expansion of e^x, & cos x to prove: lim (x-- 0)[e^x + e^-x -2]/[2cos 2x -2]. Confusing?
1 AnswerMathematics5 years ago
Can someone help me with this differential equationm problem? (MVC) Z=x^3.y^2.(1-x-y) I need the stat pts, and condition- Max/min.saddle?
1 AnswerMathematics5 years ago
How do I do solve this initial value problem? y' = 4 - y^2 using Euler's method, steps to evaluate y(1).?
1 AnswerMathematics5 years ago
How do I draw a contour diagram of this equation? z = -√[-x² - y² + 8x + 2y - 8] Supplying a software program to do this would be great.?
1 AnswerMathematics5 years ago
Is the Ordinary Diff. Equation dy/dx = sin(xy), inseparable? I wonder if I can separate using Trig identities: sin2x = 2sin xcos x.?
2 AnswersMathematics5 years ago
How do I find the vector normal to the surface z+ 2xy = x^2 + y^2 at a pt ( 2,1, 0)?
1 AnswerMathematics5 years ago
How do I find the critical pts of f(x,y)= 4xy^2 - 4x^2 -2y^2 ? When I find the patial derv's, f'x=4y^2 -8x, f'y=8xy -4y.?
2 AnswersMathematics5 years ago
What is a Discourse, such as in Education? I am doing an assignment on the Paul Morris Discourses, from Honk Kong.?
1 AnswerOther - Arts & Humanities5 years ago
How do I differentiate z= y.e^(x/y) with respect to y? This is a partial derivative question?
1 AnswerMathematics5 years ago