What is the pH of a solution with a 7.8 × 10−13 M hydronium ion concentration? A) 1.9
B) 2.8
C) 11
D) 12

Explanation:

The pH of a solution can be found by using the formula

From the question we have

We have the final answer as

Hope this helps you

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer