Need help with #2 and #3 please. CALCULATIONS FROM PROCEDURE (Show your work!) G

Question

Need help with #2 and #3 please.

CALCULATIONS FROM PROCEDURE (Show your work!) Given the molecular formula for sucrose (C12H22011), determine the molar mass (molecular weight) in grams/mole 1. Molecular mass 342.3 g (342.3 g/mol)/6.022 x 1023 molecules)/ mole 5.68 x 10-22 g 2. Calculate the number of moles of sucrose needed to make 100.0 mL of a 0.100 M solution 3. Assuming that the Kool-Aid® powder is almost all sugar (so mass of powder mass of sucrose), calculate the mass of powder needed to make the solution in #2. PASTE PHOTO OF YOUR SET OF DILUTED SOLUTIONS BELOW

Explanation / Answer

2)

molarity of sucrose solution = 0.1 M = 0.1 mol / L

volume of sucrose solution = 100 ml = 0.1 L

so

moles of sucrose = 0.1 L x 0.1 mol / L

moles of sucrose = 0.01 mol

so

0.01 moles of sucrose are needed

3)

mass of sucrose needed = 0.01 mol x 342.3 g/mol = 3.423 g

so

3.423 grams of Kool-Aid powder is needed

Related Questions

Navigate

• Browse (All)
• Browse N
• Subjects

---