Q1. Describe how you would make up 100ml of a 5M sodium chloride solution ? Q2.
ID: 588324 • Letter: Q
Question
Q1. Describe how you would make up 100ml of a 5M sodium chloride solution ?Q2. You need to make up 10 nutrient agar plates containing ampicillin at 100ug/mp. The average plate tanes 20 ml of agar. The bottle of nutrient agar says that you need 50 g of media per liter you have a stock antibiotic solution of 50 mg/ml . How would you make up the plates?
Q1. Describe how you would make up 100ml of a 5M sodium chloride solution ?
Q2. You need to make up 10 nutrient agar plates containing ampicillin at 100ug/mp. The average plate tanes 20 ml of agar. The bottle of nutrient agar says that you need 50 g of media per liter you have a stock antibiotic solution of 50 mg/ml . How would you make up the plates?
Q2. You need to make up 10 nutrient agar plates containing ampicillin at 100ug/mp. The average plate tanes 20 ml of agar. The bottle of nutrient agar says that you need 50 g of media per liter you have a stock antibiotic solution of 50 mg/ml . How would you make up the plates?
Explanation / Answer
Answer 1 1M = 1mole of solute/1liter of the solution
1L = 1000 mL
so to make 0.1L of 5M NaCl soln.
5M = 'n' moles / 0.1L
thus, 'n' = 0.5 moles
1 mole of NaCl = 58.5g
thus, 0.5 moles of NaCl = 29.25 g of salt
so you need 29.25 g of NaCl dissolved in 0.1 L of soln.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.