a. We first calculate the moles of sucrose needed
moles sucrose = 0.250 M * 0.25 L
moles sucrose = 0.0625 mol
The molar mass of sucrose 342.3 g/mol, so the mass of
sucrose needed is:
mass sucrose = 0.0625 mol * 342.3 g/mol
mass sucrose = 21.4 grams
So simply dissolved about 21.4 grams of sucrose in 250 mL
solution.
b. We use the formula:
M1 V1 = M2 V2
1.50 M * V1 = 0.100 M * 0.350 L
V1 = 0.0233 L = 23.3 mL
So simply take 23.3 mL of solution from 1.50 M then dilute
it with water until 350 mL to make 0.100 M.
''Find the density of the plastic and compare it to the density of water''
Answer:
Option (3) is the correct answer.
Explanation:
The structure of the nucleic acids are having three functional groups, namely, sugar, phosphate group and nitrogenous base. The only source of nucleic acids is your human body in the form of DNA and RNA. They are not obtained from the external environment. This is because the only purpose of nucleic acids are containing the genetic information and the transcription of amino acids to form proteins.
