Answer:
-1 1/5
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1/8 = 0.125
0.125 * 5 = 0.625
Ms. Taylor will need 625/1000 teaspoon of salt for 5 batches.
The value/answer of r is a
Answer:
Mean
Step-by-step explanation:
Mean is the average of all results.
Step 1 : Identify the formula of calculating mean
Mean = <u>Sum of all data</u>
Number of data
Step 2 : Substitute the values in the formula
Mean = <u>10 + 15 + 25 +75 + 75 + 77 + 80 +83 + 85 + 90</u>
10
Mean = <u>615</u>
10
Mean = 61.5 marks
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Answer:
Given:
The pH of solution A = 2.4
The pH of solution B = 9.4.
Solution:
The hydrogen ion concentration is the amount of hydrogen ions present in the given solution usually expressed in terms of moles pere litre .
(A) hydrogen-ion concentrations of the solution.
Now,
The hydrogen ion concentration of the solution A
Similarly
hydrogen ion concentration of the solution B
(b) The hydrogen ion concentration of solution A is and the solution B is
so we can conclude that the hydrogen ion concentration of solution A is times greater than solution B
(c) The solutions A and Solution B differ by 7 order of magnitude