![subject](/tpl/images/cats/fizika.png)
Please answer these: Q1. i. In what two ways combustion can be useful to us? Explain by giving examples. ii. Explain why decomposition of sugar on heating is an irreversible change. Q2. In order to answer this question you need to look around your immediate surroundings to find examples of rusting of iron or any other metal. i. What makes iron rust? ii. Why is the rusting of iron a problem? Give any 3 examples from daily life where rusting has been a disadvantage. iii. Suggest any two ways that can help prevent rusting of iron. Q3. i. Give two differences between a physical change and a chemical change. ii. Explain whether condensation of water vapour is a physical or a chemical change. iii. Write word equations for the following reactions: a. Breaking down/ electrolysis of water b. synthesis of water c. decomposition of sugar d. photosynthesis in plants
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 05:30
The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 08:00
Which notation is used to represent an alpha particle? a. b. c. d.
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 21:10
For the below questions, consider a consumer that consumes two goods, x and z with the following utility function. u with bar on top space equals space x to the power of 1 third end exponent z to the power of 2 over 3 end exponent suppose initial values for income and the prices of goods x and z are y equals 90, p subscript x equals space 10, and p subscript z equals 15 respectively, then the price of good x falls to syntax error from line 1 column 89 to line 1 column 100. unexpected '\'.. what is the magnitude of the total effect
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 23.06.2019 01:00
The smallest particle of an element that retains its identity in a chemical reaction. true or false
Answers: 1
You know the right answer?
Please answer these: Q1. i. In what two ways combustion can be useful to us? Explain by giving examp...
Questions
![question](/tpl/images/cats/istoriya.png)
History, 19.08.2019 18:40
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/fizika.png)
Physics, 19.08.2019 18:40
![question](/tpl/images/cats/mat.png)
Mathematics, 19.08.2019 18:40
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/istoriya.png)
History, 19.08.2019 18:40
![question](/tpl/images/cats/istoriya.png)
History, 19.08.2019 18:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/ekonomika.png)
Business, 19.08.2019 18:40
![question](/tpl/images/cats/geografiya.png)
Geography, 19.08.2019 18:40
![question](/tpl/images/cats/mat.png)
Mathematics, 19.08.2019 18:40
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 19.08.2019 18:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 19.08.2019 18:40
![question](/tpl/images/cats/mat.png)
Mathematics, 19.08.2019 18:40
![question](/tpl/images/cats/biologiya.png)
Biology, 19.08.2019 18:40
![question](/tpl/images/cats/mat.png)
Mathematics, 19.08.2019 18:40