25g ice will be the best choice to lower the final temperature because it absorb some extra heat as compare to water at 0° to convert ice into water at 0°
In order to cool down a cup of hot coffee, you are choosing between two options:...
Brewed coffee is often too hot to drink right away. You can cool it with an ice cube, but this dilutes it. Or you can buy a device that will cool your coffee without dilution - a 230 g aluminum cylinder that you take from your freezer and place in a mug of hot coffee. If the cylinder is cooled to -20 celsius degrees, a typical freezer temperature, and then dropped into a large cup of coffee (essentially water, with...
Brewed coffee is often too hot to drink right away. You can cool it with an ice cube, but this dilutes it. Or you can buy a device that will cool your coffee without dilution - a 220 g aluminum cylinder that you take from your freezer and place in a mug of hot coffee. If the cylinder is cooled to -20∘C, a typical freezer temperature, and then dropped into a large cup of coffee (essentially water, with a mass...
Brewed coffee is often too hot to drink right away. You can cool it with an ice cube, but this dilutes it. Or you can buy a device that will cool your coffee without dilution - a 250 g aluminum cylinder that you take from your freezer and place in a mug of hot coffee. If the cylinder is cooled to -20∘C , a typical freezer temperature, and then dropped into a large cup of coffee (essentially water, with a...
1)Brewed coffee is often too hot to drink right away. You can
cool it with an ice cube, but this dilutes it. Or you can buy a
device that will cool your coffee without dilution - a 200 aluminum
cylinder that you take from your freezer and place in a mug of hot
coffee.
q)If the cylinder is cooled to -20C, a typical freezer temperature,
and then dropped into a large cup of coffee (essentially water,
with a mass of...
To cool her 0.200 kg cup of 75.0 C hot chocolate (mostly water), Heidi drops a 29,.97 g ice cube at 0 C into her insulated cup. After the ice cube melts, the temperature of the hot chocolate comes down to 54.8 C. a. How much energy was lost by the hot chocolate? The specific heat capacity of water is 1 cal/g C b. How much energy was gained by the ice cube just to melt to 0 C water?...
Your 200g cup of coffee is boiling hot (100 degrees celcius). You throw in 50g of -15 degrees celcius of ice to cool it off. Assuming negligible heat leaves the coffee-ice system during this process, what is the final temperature of your coffee? (The specific heat capacity of ice is 2.03 J/(g degree C and the specific heat capacity of water is 4.18 and the latent heat of melting for ice to water is 334J/g).
At a local convenience store, you purchase a cup of coffee, but, at 98.4°C, it is too hot to drink. You add 42.2 g of ice that is −2.2°C to the 248 mL of coffee. What is the final temperature of the coffee? (Assume the heat capacity and density of the coffee are the same as water and the coffee cup is well insulated.)
Your 300mL cup of coffee is too hot to drink when served at 95.0∘C. What is the mass of an ice cube, taken from a -17.0∘C freezer, that will cool your coffee to a pleasant 56.0∘?
Your 300mL cup of coffee is too hot to drink when served at 86.0 ∘C. What is the mass of an ice cube, taken from a -23.0 ∘C freezer, that will cool your coffee to a pleasant 61.0 ∘?
Your 300 mL cup of coffee is too hot to drink when served at 95 ∘C What is the mass of an ice cube, taken from a -15 ∘C freezer, that will cool your coffee to a pleasant 57 ∘C? Specific Heat Lf (J/kg) Lv (J/kg) Ice - 2090 J/kg * K Water - 4190 J/kg * K 333,000 2,260,000