0
How much work required to decrease temperature of unit mass of water by 40 deg C?
Wiki User
∙ 11y ago
The specific heat of water is ~ 1calorie per gram per degC
to drop 1 g of water 40 C requires the loss of 40 calories of heat or -167.36 Joules
1 J = .239 cal
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
As a mass of air rises in the troposphere its temperature will usually?
decrease due to expansion
What happens if the density increases?
Density is a characteristic of a given material. Water, for example, has a certain density (which is somewhat dependent upon temperature but let's say that the temperature is constant). It does not matter how much water you have, it will all have the same density. One teaspoon has much less mass, but the same density as an entire ocean.
The amount of heat energy required to raise the temperature of a unit mass of a material one degree is?
Heat capacity is the amount of heat energy required to raise the temperature of a unit mass of a material one degree.
When temperature increases does density increase or decrease?
An increase in temperature usually causes an increase in volume. Since the mass doesn't change, density decreases. tt
Does the mass of calcium oxide effect the temperature when it reacts with water?
yes
What are the effects of temperature on the mass volume and density or water?
Temperature will have no effect on mass, however it generally causes the volume to expand (I say generally, because there is a small range in where an increase in temperature cause contraction). Since volume grows and mass stays the same, then density will decrease.
When water evaporates does its mass decrease?
The mass remain unchanged.
What does removing salt from water decrease?
Removing the salt from the water would increase the temperature required for it to freeze, and also lower the temperature it takes to boil.Meaning it would freeze more easily.
How are temperature and air mass related?
For a given volume and pressure, the mass of the air contained in that volume (density) will decrease as the temperature increases.
What is the meaning of water density?
Density is mass per unit volume of a substance. The Mass and volume of water is in the ratio of 1:1 .There fore the density of water is 1. With rise and decrease of temperature the volume increases or decreases to change the water density.
How much heat is necessary to change 220 g of ice at -5C to water at 20C?
You need to add all of the following:* The heat required to heat ice from -5 to 0 degrees. Multiply the mass times the temperature difference times the specific heat of ice. * The heat required to melt ice. Multiply the mass by the heat of fusion. * The heat required to raiste the temperature of water from 0 to 20 degrees. Multiply the mass times the temperature difference times the specific heat of water.
How do you calculate the total heat required in kcal to take 70 grams of ice at -29.0 Celsius and convert it to steam at 106 Celsius?
heat energy required to raise the temperature of ice by 29 celsius =specific heat capacity of ice * temperature change *mass of ice + to change 1kg of ice at 0 celsius to water at 0 celsius =specific latent of fusion of ice*mass of water + heat energy required to raise the temperature of water by 106 celsius =specific heat capacity of water * temperature change *mass of ice + to change 1kg of water at 106 celsius to steam at 106 celsius =specific latent of fusion of ice*mass of steam
How many joules are required for boiling 21.1g of water at 100C?
You need o know the initial temperature of water:Heat = specific heat x difference of temperature x mass of water
What happens when you decrease mass in a given volume of air?
The temperature and pressure rise.
As a mass of air rises in the troposphere its temperature will usually?
decrease due to expansion
When a hydrate compound is heated and appears to decrease in mass does it violate the law of conservation of mass?
No, it does not violate the law of conservation of mass. The reason for this is that the decrease in mass of the compound can be found in the mass of the water that was lost upon heating. Thus, total mass remains constant.
Can we say mass vary with temperature for exp the mass of solid increase or decrease when temperature increase?
Mass of any chemical, in Chemistry, is always constant, no matter how much you change the conditions.
