Enthalpy change for the balanced equation is -850kj
And from the balanced equation we come to know that for 2 moles of Al, the value is -850kj
for 1 mole of Al = -850/2 = -425 kj
We have to find the enthalpy change for 8 moles of Al = 8 x -425 = 3400kj
Thus, the enthalpy change for 8 mol of Al is -3400kj.
Hydrogen
If there wasn't any hydrogen at all, we would all be dry like a log in the Sahara Desert. Almost everywhere you can find hydrogen, whether it be little particles in the air, to small particles in the ground.
Answer:
Explanation:
no, as it can also be used to describe a gas- a fluid includes liquids, gases and plasms
Answer:
Br2+ 2H2O + SO2= 2HBr + H2SO4
Let's Compare the left side of the equation to the right side of the equation.
Left: Br= 2, H= 2, S= 1, O = 1+2
Right: Br=1, H= 1+2, S=1, O= 4
We can see that only S is balanced and not the other 3 elements.
I'll try to make each element balance.
For Br; I'll multiply by 2 on the left to make it equal to the right.
For H; Since the 2 for Br on the right affected also H, that H ( for HBr) Already has a 2, but then it adds with the other H2( for H2SO4) to give a total of 4 H on the right side. But then there's only 2 H on the left. so we multiply that 2 by a 2 ( which is written infront of the H2O to give a total of 4 H on the left side.
For O; Because of the 2 infront of the H2O, it affects the O in H2O..so now we have 2 O plus the 2 O ( in SO2) to give a total of 4 O which is equal to the right side.
