4 Some water is being heated in a pot as shown. Name the changes of state that are occurring in the following places. In the pot On the inside of the lid A Melting B Evaporation C Boiling D Condensation Boiling Freezing Condensation Evaporation as A closed wet umbrella is put near the window. The wet umbrella dries faster when A the air temperature is lower. B the wind is stronger. C the surface area of the umbrella exposed to air is smaller. D the humidity of air is higher. II Questions (17 marks) 1 Complete the following table about changes in state of water. Temperature at which the change happens Is energy absorbed or released? Name of Change in state process lce water point) Water steam point) Water water below 100 °C vapour Water vapour below water Waterice point) 2.1 22 2.3

4 Some water is being heated in a pot as shown. Name the changes of state that are occurring in the following places. In the pot On the inside of the lid A Melting B Evaporation C Boiling D Condensation Boiling Freezing Condensation Evaporation as A closed wet umbrella is put near the window. The wet umbrella dries faster when A the air temperature is lower. B the wind is stronger. C the surface area of the umbrella exposed to air is smaller. D the humidity of air is higher. II Questions (17 marks) 1 Complete the following table about changes in state of water. Temperature at which the change happens Is energy absorbed or released? Name of Change in state process lce water point) Water steam point) Water water below 100 °C vapour Water vapour below water Waterice point) 2.1 22 2.3

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter14: Heat And Heat Transfer Methods

Section: Chapter Questions

Problem 37PE: A walrus transfers energy by conduction through its blubber at the rate of 150 W when immersed in...

See similar textbooks

Similar questions

A chemistry student dissolves 4.51 grams of sodium hydroxide in 100.0 mL of water at 19.5°C (in a calorimeter cup). As the sodium hydroxide dissolves, the temperature of the surrounding water increases to 31.7°C. Determine the heat of solution of the sodium hydroxide in J/g.
A 10.00L tank at −5.9°C is filled with 8.34g of boron trifluoride gas and 18.0g of sulfur hexafluoride gas. You can assume both gases behave as ideal gases under these conditions.Calculate the mole fraction of each gas. Round each of your answers to 3 significant digits.
Answer the following items scientifically. Using the concept of kinetic molecular theory, explain why a solid can directly evaporate.
18. You have equal masses of lead (cPb = 0.031 cal/g oC) and aluminum (cAl = 0.215 cal/g oC). Each of these masses has been submerged for a long time in an ice water bath at 0 oC. If you wish to use one of these masses to lower the temperature of some hot soup at 90 oC the most, which should you use? Explain why using equations and words.
A dietician develops a new diet, in which people drink copious amounts of ice water. The theory is that the body must raise the temperature from 0.0 deg C to body temperature (37.0 deg C), and will use energy (therefore burning fat) to achieve this. If it takes 3500 Cal (3500 kcal) of energy output to burn off 454 g (about 1 pound) of fat, how much ice water (in L) must be consumed to achieve this? (Useful information: 1 L = 1000 cm3; density of water = 1 g/cm3; specific heat of water = 1 cal/g deg C)
arbon dioxide gas expands from 10.00cm3to 11.50cm3. The final temperature is 450C. Determine the initial temperature if the expansion is elemental.
A drum 0.5 ft in diameter and 45 inches long contained acetylene at 350 psia, 90 0F. After some of the acetylene was used, the pressure was 200 psia and 85 0F. a) determine the amount of acetylene that was used (lb m ). b) What volume would the used acetylene occupy at 14.7 psia, 80 0F (ft3 ) ? R for this gas is 59.35 ft-lbf /lbm-R. (Please show complete solution and round off all final answers to the 4th decimal)
# 2. No calc. Please follow required steps to better understand.
What is the energy needed to melt 0.86 kg of gold? (Use: Lf of gold 63 kJ/kg) Select one: a. 32760 J b. 54180 J c. 54.18 J
Some gun fanciers make their own bullets, which involves melting and casting the lead slugs. how much heat transfer in kilocalories is needed to heat and melt 0.51 kg of lead starting from 22.5 degrees celsius? The melting point of lead is 327 degrees celsius and its latent of fusion is 5.85 kcal/kg.
Specific heat of metals problem: How many grams of copper shots, initially at 100 °C is poured into an aluminium cupwith a mass of 50.0 g and contains 100 g of water, initially at 24°C? The finaltemperature of the mixture is 35°C.C of aluminun = 0.217 cal/g°C;C of copper = 0.092 cal/g°C.
How much energy (in kJ) is required to boil 0.1 kg of ethyl alcohol that is initially at 11.8˚C [round your final answer to zero decimal places]? Properties of ethyl alcohol: Boiling point: 78.3°C Lv = 855,000 J/kg Freezing point: -114.4°C Lf = 108,000 J/kg cp = 2,450 J/(kg∙˚C)