B. ne chemical reaction involved in burning wood
c. less energy is released than is used by th...
![subject](/tpl/images/cats/fizika.png)
Physics, 25.11.2019 08:31 dantew8238
B. ne chemical reaction involved in burning wood
c. less energy is released than is used by the reaction
3. why is a spark of energy required to begin the chemical reaction of
burning a fossil fuel? what is another name for this spark of energy?
4. the reaction below is an exothermic reaction
k2o (s) co2 (g) k2co3 (s)
a. rewrite this reaction and add "t energy" in the correct location.
b. describe how the energy level of the reactants compares to the energy
level of the products.
5. the reaction below is an endothermic reaction.
2hgo (s) 2hg +o2 (g)
a. rewrite this reaction and add energy" in the correct location
b. describe how the energy level of the reactants comporon to th
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Physics
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 14:30
Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 23.06.2019 02:40
An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 23.06.2019 10:00
Work requires a force which causes: potential energy or motion
Answers: 2
You know the right answer?
Questions
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/en.png)
English, 21.11.2020 22:00
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.11.2020 22:00
![question](/tpl/images/cats/mat.png)
Mathematics, 21.11.2020 22:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/geografiya.png)
Geography, 21.11.2020 22:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.11.2020 22:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.11.2020 22:00
![question](/tpl/images/cats/en.png)
English, 21.11.2020 22:00
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mir.png)
![question](/tpl/images/cats/biologiya.png)