Molecular weight of water is 18 so 9 moles is 162 grams. Latent heat of vaporisation is 550 cal/gram, so the amount of heat is 89100 cal or 89.1 kcal.
Heat energy. This absorbed energy warms the land and water, leading to an increase in temperature.
Most of the sun's energy is absorbed in the top few meters of water, where sunlight can penetrate. This energy is absorbed by water molecules and particles in the water, which then transfer heat to the surrounding water through conduction and convection.
To heat 1 gram of water by 1 degree Celsius, it takes 1 calorie. Therefore, to heat water from 65 oF to 105 oF, you would need 40 calories per gram of water. If you are working in kilocalories, this would be equivalent to 0.04 kilocalories.
It could be either; but when you are talking about food, what is of interest is usually the energy content - meaning, chemical energy stored in the food. Heat IS energy, and a kilocalorie is the energy required to heat one kilogram of water by one degree Celsius.
A calorimeter is typically used to measure the energy gained or lost when sunlight is absorbed by a tank of water. This device can measure the changes in temperature of the water to calculate the energy transferred.
Energy is absorbed when water is vaporized. This is because the process of vaporization requires breaking the hydrogen bonds between water molecules, which requires energy input to overcome the intermolecular forces holding the liquid water together.
158.1Kj
12.775 kcal
Heat energy. This absorbed energy warms the land and water, leading to an increase in temperature.
Most of the sun's energy is absorbed in the top few meters of water, where sunlight can penetrate. This energy is absorbed by water molecules and particles in the water, which then transfer heat to the surrounding water through conduction and convection.
First we take 88 degrees and we subtract 15 degrees. We get 73 degrees difference. Then we multiply our 175 g of water by the temperature increase of 73 degrees. We get 12,775 calories. To get Kilocalories we must divide our calories by 1000. Why don't you do that?
The specific heat capacity of water is 1 calorie/gram °C. To calculate the calories absorbed, first find the temperature change (88 - 15 = 73°C). Then, use the formula: Q = m * c * ΔT, where Q is the heat absorbed, m is the mass of water (175g), c is the specific heat capacity of water, and ΔT is the temperature change. Therefore Q = 175g * 1 cal/g°C * 73°C = 12775 calories. To convert to kilocalories, divide by 1000: 12775 calories = 12.775 kilocalories.
Thermal energy, when absorbed by water
Water, vitamins, and minerals do not supply any kilocalories of energy to the body. However, they are vital in the processes that release energy from carbohydrates, proteins, and fats.
Energy from the sun that is absorbed by the Earth's surface is reflected back into the atmosphere or absorbed by land and water and transformed into heat.
Energy from the sun that is absorbed by the Earth's surface is reflected back into the atmosphere or absorbed by land and water and transformed into heat.
Roughly 70% of the sun's energy is absorbed by the Earth's surface, with about 51% absorbed by the land and 19% absorbed by the oceans. The absorbed energy is crucial for driving various Earth processes such as weather patterns and the water cycle.