Answer:
I guess the answer is D point
Answer:
c
Explanation:
sorry if im wrong my apolgies but i think c cus thats the only one that says equal amounts of something
like to test a drop of each so its balanced
The (w/v)% concentration of vinegar contains 5g of acetic in 100mL of solution is approx 0.5 %
<h3>What is Concentration ?</h3>
The concentration of a chemical substance expresses the amount of a substance present in a mixture.
There are many different ways to express concentration.(w/v)% is one of them.
Given ;
- Mass of solute(acetic acid) is 5.0 g
- Volume of solution is 100.0 mL.
We need to convert the grams of acetic acid to moles ;
Formula of acetic acid is CH₃COOH
Thus,
Molar mass of acetic acid = 2(12.01) + 4(1.01) + 2(16)
= 24.02 + 4.04 + 32
= 60.06 grams per mol
Moles of acetic acid = 5.0/60.06
= 0.083 moles
(w/v)% = 0.083 x 60 / 1000 x 100
= 0.498 %
= 0.5 %
Hence, The (w/v)% concentration of vinegar contains 5g of acetic in 100mL of solution is approx 0.5 %
Learn more about weight percentage here ;
brainly.com/question/22575652
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Answer:
B
Explanation:
Vaccines prevent illness and disease
Answer:
a quantitative observation implies that the subject can be measured by quantity, aka amount or in numbers.
Ex 1: adding one gram of salt to one gram of sugar makes two grams of seasoning. in this example, there are individual quantities (1 gram of each) and total quantity (2 grams). this only changes if the substances have a chemical reaction, such as one of them destroying the other, then the weight would change.
Ex 2: a more simple example is the weight of something. putting the substance on a scale (one specifically for whatever you are measuring, whether it be liquid or solid) is the best way to determine its quantity.
