What is the q for 30.63 g of cold water that increases from 20 C to 45 C? Answer in calories.
What is the q for 30.63 g of cold water that increases from 20 C to...
FIRST RUN: (a) Mass of the Calorimeter (two empty cups) in g: 4.0g (b) Mass of the cold water and the calorimeter in g: 52.5g (c) Calculated mass of the coldwater in g [(b)-(a)]: 48.5 (d) Temp. of the Cold Water in C: 14c (e) Temp. of the Hot Water before mixing with the cold in C: 38c (f) Mass of the Cold & hot water mixed AND the calorimeter in g: 100.6g (g) Calculated Mass of the Hot water...
Eighty grams of cold water initially at 20 oC is combined with some amount of hot water having an initial temperature of 80 oC. Afterward, the final temperature of the mixture stabilizes at 40 oC. Assume the heat is exchanged only between the hot and cold water only (so that there is no heat loss to the surroundings). The specific heat capcity of water is 1.0 cal/(g Co). What was ΔT and Q for the hot water? ΔTH = QH...
What is q if 28.6 g of water is heated from 22.0°C to 78.3°C? The specific heat of water is 4.184 J/g°С. Multiple Choice 9.37 kJ 6,74 kJ О 3.94x104 kJ о о
1. Calculate the heat (expressed in calories) required to heat 115 g of water from 15.4^C to 91.4^C 2. Calculate the heat (in calories) lost by 115 g of water as it cools from 91.4^C to 15.4^C 3. Calculate the temperature change caused by absorption of 3.85 kcal heat by 75.4 g water 4. Calculate the final temperature of 75.4 g of water originally at 12.6^C after it absorbs 3.85 kcal of heat 5. A 23.9 g piece of metal...
8.502 1S . The temperature of a sample of water increases by 69.5 °C when 24 500 J are applied. The specific heat of liquid water is 4.18 J/g x °C. What is the mass of the sample of water? m q/(AT)Cp
75 g of water at 69 ∘C are mixed with 75 g of water at 20 ∘C in a thermally-insulated container. Calculate the change in entropy, ΔS. I know the answer is ΔS = 1.87 J/K, but I cannot remember what I did to get this last week. Thank you!
The solubility of KCl at 20°C is 34.0 g per 100.0 g of water. What is the maximum amount (in grams) of KCl that will dissolve in 40.0 g of water at 20°C?
Find what heat in calories (cal) is required to increase the temperature of 52 g water from 0°C to 50 °C The specific heat capacity of water is 1 cal/g. C Express your answer to two significant figures and include the appropriate units. Calculate the quantity of heat absorbed by 12 g of water that warms from 30°C to 82 °C. Express your answer to two significant figures and include the appropriate units.
o prase Ul Water to 2. What is the heat, q, required to melt 10 grams of ice in a) Joules b) calories? 122.3 °C). The goC. Assuming -4.18 /(8°C) 3. A piece of metal weighing 49.047 g was heated to 100.0 °C and then put it into 100.0 m water initially at 22.3 °C). The metal and water were allowed to come to an equilibu temperature, determined to be 27.8 °C. Assuming no heat lost to the environment, calculat...
A bathtub holds 135 L of hot water at 41.0°C. Cold water at 13.0°C is added to the bathtub until the water reaches a final equilibrium temperature of 38.5°C. Assuming only a negligible amount of energy is exchanged between the water and its environment during this time, determine the volume in liters (L) of the added cold water. The specific heat of water is 4.19 ✕ 103 J/(kg · °C) and its density is ρ = 1.00 kg/L. What is...