I think the answer c is the right answer
Since we are rounding to the nearest hundreds place in 222,977 the hundreds would be the 9. The seven behind it would make the number round up since the rule is 0-5 round down 6-9 round up. you round the 9 up to 10 so you add 1 to the next number since you cant have 222,1000. thats wrong . the answer is
223,000
Answer:
pH can be different from 7 ( second statement is false)
Step-by-step explanation:
since
pH=pKa + log [A-]/[HA]
at half of the equivalence point
[HA]= [A-] (third statement is true)
and therefore
pH = pKa (first statement is true)
since pH = pKa , pH can be different from 7 ( second statement is false)
2c+5=c+8
2c-c=8-5
1c=3
c=3/1
c=3
