Answer:
energy can neither be created nor destroyed but can be transfered from one form to the other
Explanation:
Answer:
267.14 iron oxide.
Explanation:
Given that
![Fe_2O_3+3CO = 2Fe+3CO_2](https://tex.z-dn.net/?f=Fe_2O_3%2B3CO%20%3D%202Fe%2B3CO_2)
We know that molecular mass of iron-oxide = 160 g/mole.
We know that molecular mass of iron = 56 g/mole.
From the above reaction we can say that
1 mole of iron -oxide produce 2 mole of iron
160 gm of iron oxide produce 112 gm of iron
So
1 gm of iron required
of iron oxide
Therefore
187 gm of iron required
of iron oxide.
Therefore 187 gm of iron required 267.14 iron oxide.
-2.5089 kJ is the amount of heat is released by the combustion of the naphthalene.
<h3>How we calculate the released heat?</h3>
Released amount of heat is calculated by using the below formula:
Q = -mcΔT, where
m = mass of naphthalene = 0.25g
c = specific heat of calorimeter = 4.13 kJ/°C
ΔT = change in temperature = 26.43°C - 24°C = 2.43°C
Putting all these values in the above equation, we get
Q = - (0.25 × 4.13 × 2.43) = - 2.5089 kJ
Hence, - 2.5089 kJ heat is released.
To know more about released heat, visit the below link:
brainly.com/question/13439286
Fossil Fuels give off energy when they are burned
One valuable fossil fuel is natural gas. It is a cleaner-burning fuel source.
A fragment of who’s prudent and not the only one who is the a front