Question

A 1% w/v solution of drug X had a freezing point depression of 0.92 Celsius. At...

A 1% w/v solution of drug X had a freezing point depression of 0.92 Celsius. At what percent strength of drug X isotonic? Use 2 sig figs

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Benzene has a normal freezing point of 5.50°C and a molal freezing point depression constant of...
Benzene has a normal freezing point of 5.50°C and a molal freezing point depression constant of 5.12°C/m. A solution prepared by dissolving 0.335g of compound X in 5.00g of benzene has a freezing point of 1.34°C. Assuming that compound X is a nonelectrolyte, what is the molar mass of compound X?
Freezing Point Depression Lab Objective: To use freezing point to determine the molecular weight of an...
Freezing Point Depression Lab Objective: To use freezing point to determine the molecular weight of an unknown substance. In this lab, we used benzophene as the solvent, which has a freezing point of 48.1 degrees celsius and Kf value of 9.80 degrees C/m. The procedure consisted of measuring out 10 g benzophenone in a test tube and melting the substance in a warm water bath. When melted, we removed the test tube from the bath and allowed it to cool....
How many mol of NaOH are in 0.55 mL of 25%w/v NaOH solution? (Report your answer...
How many mol of NaOH are in 0.55 mL of 25%w/v NaOH solution? (Report your answer to 2 sig figs.)
5. Determine the molal freezing point depression constant (Kf) (in °C⋅kg/mol) of water by using the...
5. Determine the molal freezing point depression constant (Kf) (in °C⋅kg/mol) of water by using the data of three NaCl solutions . Use Equation 3 in the “Background and Procedure” file, the molality values of all solutes from Question s 1 – 3 and the freezing point depression ( ∆T) from Question 4. In your calculation, rewrite the symbol“m ” (the molality) as “mol/kg” so that the molal freezing point depression constant will have the correct unit. Make sure to...
A certain substance X has a normal freezing point of -6.4 C and a molal freezing...
A certain substance X has a normal freezing point of -6.4 C and a molal freezing point depression constant Kf= 3.96 degrees C.kg.mol-1. A solution is prepared by dissolving some urea ((NH2)2CO) in 950. g of X. This solution freezes at -13.6 C. calculate the mass of urea that was dissolved. Round your answer to 2 significant digits.
1. If 480 mL of a 30% w/v solution were diluted to 2.5 liters, what would...
1. If 480 mL of a 30% w/v solution were diluted to 2.5 liters, what would be the percentage strength (w/v)? Express units only as %. (Round to tenths) 2. If 3 tablepoonsful of povidone iodine solution (6.0 % w/v) were diluted to 1.50 pint with purified water, what would be the ratio strength (w/v, which is what the units are for this problem) of the dilution [expressed as 1:____ rounded to the nearest whole number and without putting the...
The boiling point of an aqueous solution is 101.88 °C. What is the freezing point? Constants...
The boiling point of an aqueous solution is 101.88 °C. What is the freezing point? Constants can be found here. Constants for freezing-point depression and boiling-point elevation calculations at 1 atm: Solvent Formula Kf value* (°C/m) Normal freezing point (°C) Kb value (°C/m) Normal boiling point (°C) water H2O 1.86 0.00 0.512 100.00 benzene C6H6 5.12 5.49 2.53 80.1 cyclohexane C6H12 20.8 6.59 2.92 80.7 ethanol C2H6O 1.99 –117.3 1.22 78.4 carbon tetrachloride CCl4 29.8 –22.9 5.03 76.8 camphor C10H16O...
What is the final percentage strength (w/w) of a product made by combining 30 grams of...
What is the final percentage strength (w/w) of a product made by combining 30 grams of a 50% powder with 20 grams of a 10% powder and 50 grams of lactose (a diluent with 0% active ingredient)? Enter your answer as a number with the appropriate units. QUESTION 2 When using the method of alligation, active ingredient should be set to a strength of _____%. QUESTION 3 How many milliliters of a 1% (w/v) stock solution of a drug should...
An ophthalmic solution contains tafluprost, 0.0015% w/v, available in 0.3 mL pouches for single use. Calculate...
An ophthalmic solution contains tafluprost, 0.0015% w/v, available in 0.3 mL pouches for single use. Calculate (a) the quantity of tafluprost, in micrograms, in each pouch b) the number of single-dose pouches that the manufacturer may prepare from each 1 g of drug.
1) A solution of 1.01 g of benzoic acid in 8.02 g of lauric acid had...
1) A solution of 1.01 g of benzoic acid in 8.02 g of lauric acid had a freezing point of 38.9 °C. What is the molar mass of benzoic acid? The freezing point of lauric acid is 44.0 °C and Kf is 3.60 °C.kg/mol. 2) Calculate the osmotic pressure of a 0.150 M aqueous solution of caalcium chloride at 25°C.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT