Water freezers irreversibly at -8 degrees Celsius. Which of the following relations must be true? Delta...
A 50g ice cube is taken out of a freezer at 0 degrees Celsius and put in a thermally isolated container containing 200g of water at the temperature 60 degrees Celsius. Find the temperature of the system at equilibrium. ANSWER: 32 degrees Celsius I don't understand why you have to involve (moles of ice x delta H of fusion) to the equation? Please help! Thanks!
An 80g ice cube at 0 degrees Celsius is placed in 798g of water at 30 degrees Celsius. What is the final temperature of the mixture? The latent heat of fusion for water is 3.33x10^5J/kg and the specific heat of water is 4186J/(kg x degrees Celsius).
How much heat (in kcal) must be added to a 8kg block of ice -8 degrees Celsius to change it to water at 14 degrees Celsius?
8.) Write a C++ program to convert temperature in degrees Fahrenheit to degrees Celsius. This is the equation for this conversion: Celsius = 5.0/9.0 (Fahrenheit-32.0) Have your program convert and display the Celsius temperature corresponding to 98.6 degrees Fahrenheit. Your program should produce the following display (replacing the underlines with the correct values): For a Fahrenheit temperature of-_ degrees, the equivalent Celsius temperature is degrees
The solubility of Cr(OH)3 in water is 1.26*10^-8 M at 25 degrees celsius. what is the ksp value.
A solution of ethylene glycol in water at 20 degrees celsius has a mass percent of 9.78% of ethylene glycol with a density of 1.0108 g/mL. The freezing point depression constant for water (solvent for all solutions) is Kf=-1.86 percent celsius kg/mol and the boiling point elevation constant is Kb=0.512 degrees celsius kg/mol. The density of neat water at 20.0 degrees celsius is 0.9982 g/mL. Answer the following: 1. What is the molarity of the solution? 2. What is the...
2. The Rhett Butler Peach, Co. dips the peaches in boiling water (100 degrees Celsius) to remove the skin (a process known as blanching) before canning them. The wastewater from the process is high in organic matter and it must be treated prior to disposal. The treatment process is a biological process that operates at 20 degrees Celsius. Thus, the wastewater must be cooled to 20 degrees before disposal. Forty cubic meters of wastewater is discharged to a concrete tank...
1.7 grams of benzoic acid dissolves in 1 liter of water at 0 degrees Celsius 56.3 grams of benzoic acids dissolves in 1 liter of water at 100 degrees Celsius 1. Calculate the percent recovery of benzoic acid and aspirin. 2. What are some of the properties of an ideal recrystallization solvent? 3. Why is ice cold solvent used to rinse the purified crystals? 4. If the hot solution were immediately placed in an ice water bath during the recrystallization...
To decide whether AgCl should dissolve in water ( spontaneous reaction ) at 25 degrees celcius, the delta H and T delta S must be used in the Gibbs Free Energy equation to calculate delta G AgCl (s) + H2O (I) -> Ag+ + Cl- + H2O Standard Enthalpies of formation and standard entropies of common compounds substance state AgCl s -127010 96.20 Cl- aq -167080. 56.50 Ag+ aq. 105790. 72.70
How many grams of glucose must be dissolved in 300.0 ml of water at 25 degrees celsius to give an osmotic pressure of 9.05atm