((469+174)^(2)-(469-174)^(2))/((469times174))

((469+174)^(2)-(469-174)^(2))/(4(c)295(d)643)=?(a)2(b)

2 6 33 49 174 210 ?

What is molarity of K^(+) in aqueous solution that contains 17.4 ppm of K_(2)SO_(4)(174g"mol"^(-1)) ?

If [(1,3,9),(1,x,x^(2)),(4,6,9)] is singular matrix then x =

If f: R to R" is defined f(x)"=2x^(2)-1 , find the pre-images of 17,4 and -2.

Find the concentration of H^(o+), HCO_(3)^(Θ) , and CO_(3)^(-2) in a 0.01M solution of carbonic acid if the pH of solution is 4.18 . K_(1) = 4.45 xx 10^(-7),K_(2) = 4.69 xx 10^(-11)