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What would happen to the solubility of potassium chloride in water as the water temperature increased from 25 and degC to 100 and degC?
The solubility increase from 38,7 g KCl/100g water to 40,7 g KCl/100 g water.
The normal boiling point of chloroform which has a higher vapor pressure than water at 100 and degC is?
The boiling point of chloroform is 61,15 oC.
50 g of ice at 0 and degC is dropped in a beaker containing 100 g of water at 0 and degC. What will be the contents of the beaker after 5 hours Assume that the room temperature is 0 and degC.?
After 5 hours, the contents of the beaker will remain at 0 °C. The 50 g of ice will not melt since the surrounding water is also at 0 °C, and there is no heat transfer from the environment to raise the temperature. Thus, the beaker will contain both 50 g of ice and 100 g of water, all at the same temperature of 0 °C.
) The temperature of a sample of water changes from 10 and degC to 20 and degC when the water absorbs 100 calories of heat. What is the mass of the sample?
one calorie of heat is able to raise one gram of water one degree Celsius so 400 calories could raise 1g of water 400 degrees, so it would raise the 80g by(400/80) 5 degrees Celsius plus the initial temp of 10 degrees, the 80g of water would have a final temp of 15 degrees Celsius
How many calories are needed to heat 225 g of water from 50.5 degrees C to steam at 133 degrees C?
1 cal/gdegC x 225g x (100 - 50.5)degC heat to the boiling point 540 cal/g x 225g heat to vaporize the water 0.5 cal/gdegC x 225 g x (133-100)degC heat to chang temp of steam = 11137.5 cal + 121500 cal + 3712.5 cal = 14850 cal
What would happen to the solubility of potassium chloride in water as the water temperature increased from 25 and degC to 100 and degC?
The solubility increase from 38,7 g KCl/100g water to 40,7 g KCl/100 g water.
What would happen to a sample of water at 30 and degC if it is heated until the temperature reaches 120 and degC?
Water is transformed in vapors.
The normal boiling point of chloroform which has a higher vapor pressure than water at 100 and degC is?
The boiling point of chloroform is 61,15 oC.
50 g of ice at 0 and degC is dropped in a beaker containing 100 g of water at 0 and degC. What will be the contents of the beaker after 5 hours Assume that the room temperature is 0 and degC.?
After 5 hours, the contents of the beaker will remain at 0 °C. The 50 g of ice will not melt since the surrounding water is also at 0 °C, and there is no heat transfer from the environment to raise the temperature. Thus, the beaker will contain both 50 g of ice and 100 g of water, all at the same temperature of 0 °C.
) The temperature of a sample of water changes from 10 and degC to 20 and degC when the water absorbs 100 calories of heat. What is the mass of the sample?
one calorie of heat is able to raise one gram of water one degree Celsius so 400 calories could raise 1g of water 400 degrees, so it would raise the 80g by(400/80) 5 degrees Celsius plus the initial temp of 10 degrees, the 80g of water would have a final temp of 15 degrees Celsius
Four containers A B C and D contain tar. The tar in each of the containers A B C and D have temperatures of 100 and degC 200 and degC 50 and degC and 25 and degC respectively. Which statement is true?
The statement that is true is that tar in container A (100 °C) and container B (200 °C) is at a higher temperature than the tar in containers C (50 °C) and D (25 °C). Therefore, the tar in containers A and B is likely to be less viscous and flow more easily compared to the thicker, cooler tar in containers C and D.
How many calories are needed to heat 225 g of water from 50.5 degrees C to steam at 133 degrees C?
1 cal/gdegC x 225g x (100 - 50.5)degC heat to the boiling point 540 cal/g x 225g heat to vaporize the water 0.5 cal/gdegC x 225 g x (133-100)degC heat to chang temp of steam = 11137.5 cal + 121500 cal + 3712.5 cal = 14850 cal
How many joules of energy are necessary to heat a sample of water with a mass of 46.0 grams from 0.0 celsius to 100.0?
419.1 Joules are required to heat one gram of liquid water from 0.01 degC to 100 deg C. So the answer is 419.1*46 = 19278.6
A beaker containing 80 grams of KNO3 in 100 grams of water have a temperature of 30 and Acirc and degC. Approximately how many grams of the salt are undissolved on the bottom of the beaker?
The mass of undissolved potassium nitrate is cca. 3 g.
Is ice cooler then water?
Yes, assuming we are talking about pure water and pure ice. Ice is the solid state of water and occurs at 32 degF or 0 degC.
If the temperature changes by 100 K by how much does it change in and degC?
A temperature change of 100 K is equivalent to a change of 100 degrees Celsius. This is because the size of a degree Celsius and a Kelvin is the same, but the zero point is different (0 K is absolute zero while 0°C is the freezing point of water).
Most substances become less dense as the temperature increases. Which substance is an exception to this rule aluminum at 20 and degC ice at 0 and degC oxygen at 20 and degC steel at 40 and degC?
Ice is the exception to the rule that most substances become less dense as temperature increases. At 0°C, ice is less dense than liquid water, which is why it floats. In contrast, aluminum, oxygen, and steel all follow the general trend of decreasing density as temperature increases.
