To turn 50g of boiling water to steam requires

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Discussion Overview

The discussion revolves around a homework assignment related to physical science, specifically focusing on concepts of thermodynamics, energy conversion, and properties of materials. Participants seek assistance in answering multiple-choice questions, expressing varying levels of understanding and attempts to solve the problems.

Discussion Character

  • Homework-related
  • Exploratory

Main Points Raised

  • One participant asks for help with a set of questions, including the energy required to convert boiling water to steam, the effects of heat in different environments, and the nature of steam burns.
  • Another participant emphasizes that the forum provides help rather than direct answers, suggesting that users must show their attempts at solving the questions.
  • Several participants share their answers to the questions, indicating their confidence in some responses while expressing uncertainty about others.
  • One participant expresses frustration with the material, stating they have tried books but find it challenging.
  • Another participant inquires about the course context, confirming it is physical science.

Areas of Agreement / Disagreement

There is no consensus on the correct answers to the homework questions, as participants share differing opinions and levels of confidence in their responses. Some participants express uncertainty about their answers, while others assert their choices without verification.

Contextual Notes

Participants do not provide detailed reasoning for their answers, and there is a lack of discussion on the underlying concepts, which may limit the understanding of the material. The responses are based on personal interpretations and attempts rather than established scientific principles.

Who May Find This Useful

Students struggling with physical science concepts, particularly those related to thermodynamics and energy transfer, may find this discussion relevant.

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Please someone help me with my homework :D i have tried and tried but i just suck at science



1. To turn 50g of boiling water to steam requires
A. 50 Calories (210 Joules)
B. 500 Calories (2100 Joules)
C. 540 Calories (2270 Joules)

2. If you were caught freezing in cold weather with only a candel for heat, you would be warmer in
A. an igloo
B. a car
C. a tent
D. a wooden house

3. It is possible to totally convert a given amount of energy into mechanical energy.
A. True
B. False

4. When a solid is changed to a liquid phase, the solid
A. absorb energy
B. release energy
C. neither

5. When work is done by a system and no heat added to it, the temperature of the system
A. Decrease
B. Increase
C. Remains unchanged

6. An inventor discovers a harmless and tasteless salt, which, when added to water changes its boiling point, the market value for this salt will be best if the salt
A. lower the boiling point of water
B. raises the boiling point of water
C. either raises or lowers the boiling point, as the food would be cooked either way.

7. A good asorber of radiation is a
A. good reflector
B. good emitter of radiation
C. poor emitter of radiation

8. The amount of energy ultimately converted to heat by light bulbs is about
A. 30%
B. 60%
C. 15%
D. 45%
E. 100%

9. Steam burns are more dangerous than burns caused by boiling water because steam
A. Gives the additional energy when it condenses
B. Has more energy per kilogram than boiling water
C. Both of these
D. neither of these


i think number 2 is A
Number 4 is A
and number 9 is C

i am clueless about the rest :P
 
Last edited:
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cookies said:
Please someone help me with my homework :D i have tried and tried but i just suck at science
1. To turn 50g of boiling water to steam requires
A. 50 Calories (210 Joules)
B. 500 Calories (2100 Joules)
C. 540 Calories (2270 Joules)

...

9. Steam burns are more dangerous than burns caused by boiling water because steam
A. Gives the additional energy when it condenses
B. Has more energy per kilogram than boiling water
C. Both of these
D. neither of thesei think number 2 is A
Number 4 is A
and number 9 is C

i am clueless about the rest :P
This forum provides help, not answers. You must show a reasonable attempt at solving these questions. No one is going to just give you 9 answers.
 
i have tried books i can't stand it lol
 
what course is this ?
 
phsical science :P
 
1.a
2.a
3.a
4.b
5.c
6.b
7.b
8.e
9.c


please tell me wat i got rong and rite ty
 
cookies said:
1.a
2.a
3.a
4.b
5.c
6.b
7.b
8.e
9.c please tell me wat i got rong and rite ty
No one is here to check your answers. If you want help with a question, show what you've tried and where you're struggling.

If you want to know the answers to these questions, ask your teacher (who is paid to help you).
 

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