Answer:
How does the cuddle fish change its colors?
Please tell me if I'm wrong.
In order to know the number of moles from the given mass, the conversion factor to be used is the average atomic mass of Calcium which is equal to 40.08 g/mol. But first, let's convert mass from grams to kilograms knowing that there are 1,000 g in every 1 kg.
Mass = 351 kg * 1,000g/1 kg = 351,000 grams
Number of moles = 351,000 g * 1 mol/40.08 g = 8,757.5 moles Calcium
"The objects weight changes, but the mass stays the same" is the one statement among the following choices given in the question that <span>is true about the object. The correct option among all the options that are given in the question is the first option or option "a". I hope the answer has come to your help.</span>
Answer:
The answer to your question is pH = 9.5
Explanation:
Data
pOH = 4.5
pH = ?
pH measures the hydronium concentration [H₃O⁺]. The scale of pH goes form 0 to 14. If the solution has a pH from 0 to 6.9 the solution is an acid, if the pH = 7, the solution is neutral and if the pH goes from 7.1 to 14 the solution is an alkali,
Formula
pH + pOH = 14
-Solve for pH
pH = 14 - pOH
-Substitution
pH = 14 - 4.5
-Result
pH = 9.5
Answer:
How does the decrease in confidence affect the sample size required
is approximately 141
Explanation:
Compute Sample Size
n = (Z a/2 * S.D / ME ) ^2
Zα/2 at 0.01% LOS is = 2.58 ( From Standard Normal Table )
Standard Deviation ( S.D) = 18.4
ME =4
n = ( 2.58*18.4/4) ^2
= (47.472/4 ) ^2
= 140.849 ~ 141