Use the heat equation to calculate the energy , in joules and calories, for each of the following: a. tho heat 25.0g of water from 12.5°C to 25.7°C
Use the heat equation to calculate the energy , in joules and calories, for each of...
3.37 Use the heat equation to calculate the energy for each of the following (see Table 3.11): a. calories to heat 8.5 g of water from 15 °C to 36 °C b. 2600 joules lost when 25 g of water cools from 86°C to 61 °C c. 9.3 kilocalories to heat 150 g of water from 15 °C to 77 °C d. kilojoules to heat 175 g of copper from 28 °C to 188 °C 3.38 Use the beat. cal/g...
Review Problem 6.053 How much heat, in joules and in calories, must be removed from 1.28 mol of water to lower its temperature from 38.3 to 24.3°C? Include the sign in your answer. joules calories Click if you would like to Show Work for this question Open Show Work
How many (a) calories and (b) joules are needed to heat 58.3g water from 5.55degreeC to steam at 120degreeC
Energy/Specific Heat (q=mcAT) 1. Determine the energy, in Joules, needed to increase the temperature of 20.00 g of water from 300.0 K to 365.0 K. (Remember that one degree of Celsius contains the same amount of energy as one Kelvin.) 2. Determine the energy, in Joules, released as 1.00 kilogram of water cools from 72.0°C to 30.0°C. 3. 25.0 g of mercury are heated from 25.0° C to 155.0°C and absorbs 455 joules of heat in the process. Calculate the...
Calculate energy in joules and calories, when 15.0g of ethanol is lost, C2H6O,cools from 60.5 to 42.0 ,Ethanol has 0.588cal/g degree Celsius and 2.46j/g degree Celsius
II ReviewI ConstantsPeriodic Table Use the heat equation to calculate the energy for each of the following (see the table) ▼PartC Substance Elements Aluminum, Al(s) Copper, Cu(s) Gold, Au(s) Iron, Fe(s) Silver, Ag(s) Titanium, Ti(s) kilocalories to heat 110 g of water from 15 C to 79 C Express your answer to two significant figures and include the appropriate units. 0.214 0.897 0.0920 0.385 0.0308 0129 0.108 0452 0.0562 0.235 0.1250.523 alue Units Ammonia, NH,(R) Etanol, C,HOH ( 1 )...
a) calculate the temperature change for a 987 gram sample of water that absorbed 6,990 joules of heat. is this endo- or exorthermic? b) how many grams of water when absorbing 12,000 calories will heat from 31.2 degrees c to 99.5 degrees c? c) 69.8 grams of aluminum is heated with 3,900 joules of energy. what will be the temperature change? what would the temperature be if the initial temperature was 25.0 degrees c? the c for aluminum is =...
a) how many joules are needed to heat up 325 grams of water from 25.1 degrees c to 43.8 degrees c? how many calories? b) how many joules are needed to heat up 325 grams of aluminum from 25.1 degrees c to 89.5 degrees c? how many calories? the c for aluminum is = 0.897 j/g degrees c
interconverting calories and joules Interconverting calories and joules Complete the following table. Round each of your answers to 3 significant digits. energy content when eaten food kcal cal kJ ? X a cup of cooked white rice 2.25 10 a cup of grapefruit juice 115 a tablespoon of corn oil 58.6 I1I
A. Calculate the heat change in calories for vaporization of 25.0 g of water at 100 ∘C. Express your answer as a positive value using three significant figures and include the appropriate units. B. Calculate the heat change in joules for vaporization of 7.00 g of water at 100 ∘C. Express your answer as a positive value using three significant figures and include the appropriate units. C. Calculate the heat change in kilocalories for condensation of 6.5 kg of steam...