The approximate molar concentration of several chemicals are given. find the ph of each use the calculator and round to the nearest 10th if necessary. here is the photo of the question

Explanation:

Formula to calculate pH of a chemical or solution is as follows.

                    pH =

Therefore, calculate the pH of given chemicals as follows.

1). Oven cleaner

              pH =

                    =

                    =  13

2). Water

               pH =

                     =

                     = 6.15

3). Blood

               pH =    

                     =

                     = 7.40

4). Vinegar

                pH =    

                      =

                      = 2.20          

the other guy was correct except for water... water is 6.2 :)

Step-by-step explanation:

oven cleaner is 13

water is 6.2

blood is 7.4

Vinegar is 2.2

hope this helps :)  

answer: ratio of volume of cone (with 3 times the height and equal diameter) to volume of cylinder is 2 to 1. the value of π is not used.

step-by-step explanation:

radius is diameter/2 = 4.

area of circle is π r^2.

volume of cylinder is height × area of base = hπr^2 = 3(4^2) π = 48π cubic inches.

not knowing the formula for volume of cone, i calculate it using calculus (which is for calculating things).

volume of cone is integral 0 to h area(y) dy. area(y) is π r(y)^2. r(y) runs r to zero as y runs zero to h, r(0) = r, r(h) = 0.

r(y) = r - r/h y

area(y) = π (r - r/h y)^2 = π (r^2 - 2r^2y/h + r^2y^2/h^2) = π r^2(1-2y/h+y^2/h^2)

antiderivative area(y) = π r^2 (y-y^2/h+y^3/(3h^2))

integral 0 to h = π r^2(h-h^2/h+h^3/(3h^2) - (0)) = π r^2(h - h + h/3) = π r^2(h/3) = π/3 r^2 h

volume of this cone is π/3(4^2)18 cubic inches.

= 6 16 π = 96π cubic inches.

cone has twice the volume, 96/48.

cone height is 6 times the cylinder.

ratio of volume formula: π r^2 cancels.

cone over cylinder ratio is 6h/3 to h, 2 to 1.