CHEM 104 final 50 questions and answers 2024. CHEM 104 final 50 questions and answers 2024.
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Course
Oncology Nursing
Institution
Oncology Nursing
CHEM 104 final 50 questions and answers 2024. CHEM 104 final 50 questions and answers 2024. CHEM 104 final 50 questions and answers 2024. CHEM 104 final 50 questions and answers 2024.
1. In this experiment scrap aluminum metal will be converted to the
compound called ___.the name commonly refers to _____________,
which is a crystaline white solid.: alum; potassium aluminum
dodecahydrate
2. is the process of determining the exact concentration (molarity) of a
solution: standardization
3. is one type of analytical procedure often used in standarization. in a
this, an exact volume of one substance is reacted with a known
amount of another substance: titration
4. the point at which the reaction is complete in a titration is referred to
as the ____. a chemical substance known as a ____ is used to indicate
the endpoint. the _____used in this experiment is phenolphthalein
which is an organic compound, is colorless in acidic solution and
pink in basic solutions: endpoint; indicator; indicator
5. I just finished preforming an organic reaction of 54g of sub. A and
84g of sub. B. My instructor told me that I should be able to achieve
1/6
, a mass of 65g of product. Unfortunately I only got 35g. What is my
percent yield? (don't use the percent symbol).: 54
6. If I have 46g of sodium reacting with 23g of chlorine to form NaCl,
what is my product in grams (don't type units just the number): 38
7. If you have 100grams of a substance with a molar mass of 63.18g/mol,
how many moles do you have?: 1.58
8. What is the purpose of standardizing an acid or base solution?: to
calculate its molarity
9. In the titration of a base with an acid, the endpoint is reached when
the ___
changes color.: indicator
10. Standardizing acid and base solutions ensures accurate and precise
experimental results by determining the exact concentration of the
solutions being used, which is essential for quantitative analysis.
(true or false): true
11. If i have 0.1L of a 5M solution how many moles do i have?: 0.5
12. If i have 19 grams of a substance whos molar mass is 113g/mol how
many mols do i have? Do not use units.: 0.168
13. Freezing point depression is a colligative property that depends on
the ___ of the solute particles in a solution.: concentration
2/6
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