Answer:
c .3.3
Step-by-step explanation:
pH is the negative log of the molar hydrogen ion concentration.The equation to calculate pH is;
pH = -log10[H+]
pH = -log10(5.0 x 10-4)
pH = 3.30
Answer:

Step-by-step explanation:
3 ln(p + q) − 2 ln(q) − 7 ln(p)
=ln(p+q)^3- ln(q)^2-ln(p)^7
= ln(p+q)^3-{ln(q)^2+ln(p)^7}
=ln(p+q)^3-ln(q)^2*(p)^7
=ln{ (p+q)^3÷(q)^2*(p)^7}
=