Answer:
The correct option is d
Step-by-step explanation:
From the question we are told that
The concentration of HF is [HF] = 0.6 M
The concentration of NaF is
The Ka of HF is
Generally HF(Hydrogen fluoride ) is ionized as follows
Generally NaF(Sodium fluoride ) is ionized as follows
Generally the from Henderson-Hasselbalch equation the pH of the buffer is mathematically represented as
=>
=>
=>
<h2><u>
Boys and girls</u></h2>
<u></u>
As there are 3 boys and 2 girls in the group, only 1 game was played between a girl and a girl.
Since a group of friends played chess, and each person played exactly one game with each other in the group, and out of the total number of games played, 3 games were played between a boy and a boy, and 6 games were between a boy and a girl, to determine how many games were played between a girl and a girl, the following calculation must be performed:
- 2 players = 1 match
- 3 players = 3 games
- 6/3 = 2
Therefore, as there are 3 boys and 2 girls in the group, only 1 game was played between a girl and a girl.
Learn more about maths in brainly.com/question/10525625
This is a problem of permutation or arrangements, the word PRECALCULUS has 11 letters, of which 3 letters appear twice, we want to get the number of indistinguishable arrangements, this is how we do it,
For our problem, what we do is
Answer:
y-1=2/3(x+6)
Step-by-step explanation:
point slope is y-y sub 1=m(x-x sub one)
Plug in m and the point to get point slope