The given question is incomplete. The complete question is :
What volume of 0.160 M solution of KOH must be added to 550.0 mL of the acidic solution to completely neutralize all of the 0.150 M hydrochloric acid?
Answer: Volume in liters to three significant figures is 0.516 L
Explanation:
To calculate the volume of acid, we use the equation given by neutralization reaction:

where,
are the n-factor, molarity and volume of acid which is 
are the n-factor, molarity and volume of base which is KOH
We are given:

Putting values in above equation, we get:
(1L=1000ml)
Thus volume in liters to three significant figures is 0.516 L
Answer:
in plant and animal cells
Explanation:
It happens in both and occurs in the mitochondria.
Woah, that doesn't look like high school. That's gotta be college level.
Answer:
The answer would be B
Explanation:
C does not make sense and A will not affect anything
Answer:

Explanation:
The unbalanced nuclear equation is

It is convenient to replace the question mark by an atomic symbol,
, where x = the atomic number, y = the mass number, and Z = the symbol of the element .
Then your equation becomes

The main point to remember in balancing nuclear equations is that **the sums of the superscripts and the subscripts must be the same on each side of the equation**.
Then
84 = x + 2, so x = 84 - 2 = 82
210 = y + 4, so y = 206
Element 82 is lead, so the nuclear equation becomes
