A substance has a hydrogen ion concentration of  figure 1.png)
. Find the pH of the substance.
 figure 2.png)
(e) pH ? 2.4
Mathematics
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Find all the first order partial derivatives for the following function.f(x, y) = 
A. 
= - 
; 
= - 
B. 
= 
; 
= 
C. 
= - 
; 
= - 
D. 
= - 
; 
= - 
Mathematics
Multiply in the indicated base.637 × 47
A. 4457 B. 3557 C. 3467 D. 3457
Mathematics
Solve by the substitution method.9x + 8y = 8 5x + 4y = 4
A. (0, 2) B. (-1, 2) C. No solution D. (0, 1)
Mathematics
Multiply.(-3)(-6)(5)
A. 190 B. 90 C. -90 D. 80
Mathematics