How many 10-gram tablets would you need to prepare 250 mL of a 1:5 solution?
1 answer:
Answer:
We need 5 tablets.
Explanation:
We need to prepare 250 mL of a 1 : 5 solution.
When we are talking about solutions , '' a : b '' is known as the solution ratio.
Where ''a'' and ''b'' are integer numbers.
In our exercise, we have a 1 : 5 solution ratio. This means that we will have 1 gram of solute for each 5 mL of solution.
To calculate the mass of solute we can write the following :
Notice that we equalize the solution ratio to the mass of solute '''' divided by the total volume of solution (250 mL).
Solving for ⇒
⇒
We found out that we need 50 g of solute.
Given that each tablet has 10 g of solute ⇒
We need five 10-gram tablets to prepare the solution.
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Answer:
Option B== > Amino acid
Explanation:
KINDLY NOTE that the compound in the question is attached below as a picture.
From the diagram in the picture, the compound contains an aryl group, Amine functional group and a carboxylic functional group. An Amino acid compound is a compound that has carboxyl group and the amine group which makes the answer to the question to be option 'b' that is Amino acid.
Polystyrene has formula like this:(C8H8)n, there is no amine functional group attached and there is no carboxyl functional group either which makes polystyrene not to be the answer. This the same case with vitamin D which has which has hydroxyl functional group and not carboxylic nor does it has amine functional group. Although it has been revealed through series of researches that Amino acid are good solvent for Carbondioxide, the most correct option for this question will be on identifying the correct compounds with reference to their functional groups.
