Reen

This page lists questions and answers that were posted by visitors named Reen.

Questions

The following questions were asked by visitors named Reen.

isolate t: 300(1.o5)^t = 1000(0.92)^t

solve for x: a)e^x=5 b) lnx=2

Simplify the expression: cos(2tan^(-1)x) any help is appreciated =D

limit as x approaches infinity; tan^(-1) (x^2 - x^4) any help is appreciated =D

A sample of the primary standard, Potassium hydrogen phthalate, weighing 0.3589g requires 14.96mL of NaOH solution for neutralization. calculate the molarity of the NaOH solution.

lim as x-> infinity sec^2(1/x)

P /|\ / | \ / | \ on this side there is an / | \ arc with A(θ) in the / | \ middle. the B(θ) /θ | B(θ)\ triangle is not equal O -------------- R to the θ triangle. Q the figure shows a setor of a circle with central angle theta. Let A(θ) be the area of th...

find the equation of f(x) f''(x)= 2 + x^3 + x^6

find f(x) f'(x) = (x^2-1)/x^(-1)

find f(x) f'(x) = (x^2-1)/x^(-1)

f'(x) = (x^2-1)/x

a few drops of NaOH are added to a sample of the unknown. A blue precipitate appears. Next, approximately 1mL of ammonia, NH3, is added. The precipitate dissolves, but the solution remains blue. Which ion is present. Explain

determine the pH of 10.00mL or 0.100M HCl after adding 10.00mL of indicator solution. (i think this is supposed to be a buffer problem)

9.00mL of 1.10M CH3COOH and 1.00mL of 0.900M CH3COO- what is the pH?

what mass of sodium acetate should be dissolved in 1.00L of acetic acid, 0.150M concentration, in order to produce a buffer with pH = 4.5?. Ka of CH3COOH = 1.8x10^-5

Pure acetylsalicylic acid has a melting point of 135.0 - 135.5 (degrees Celsius). What would you expect for the melting point is this was mixed as a 50:50 mixture with pure benzoic acid (melting point 121 - 122)? Explain.

how do you do the linear equation y + 9 =1/5x and 45 - 3y = 15x

Answers

The following answers were posted by visitors named Reen.

its two words the letters are hemctbenwee

its two words the letters are hemctbenwee the second word is four letters

try isolating for y

i just didn't understand how you got to that point. And i havn't learned integrals yet. I was hoping someone else could give me a different perspective as to how to answer it.

im sorry. i think it was because i wrote it wrong. i meant f'(x) = (x^2-1)/x

sorry, i meant what is the antiderivative of f'(x) = (x^2-1)/x

we havn't learnt that equation.

thanks. so for this question is the pH 3.70?

thanks a lot :D

I'm assuming mass? I'm not sure.