In chemistry, the pH
pH
of a solution is a measure of the acidity or alkalinity of a solution. Water has a pH
pH
of 7
7
and, in general, acids have a pH
pH
less than 7
7
and alkaline solutions have a pH
pH
greater than 7
7
. Find the pH
pH
of a solution with a hydronium ion concentration of 7.9×10−8
7.9
×
10
−
8
moles/liter. Round your answer to two decimal places, if necessary.

robert puts 2 in each row

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;

step-by-step explanation:

7

step-by-step explanation: