Tag Archives: change

chemistry help?

The direction of change in a reaction depends on the combined changes of entropy, heat of reaction, and temperature. If this is expressed as ∆G=∆H – T∆S, what would it mean if the value for free energy (∆G) is zero

A.The reaction is spontaneous
B.The reaction is in equilibrium
C.The reaction isn’t spontaneous
D.No reaction is possible

chemistry help?

The direction of change in a reaction depends on the combined changes of entropy, heat of reaction, and temperature. If this is expressed as ∆G=∆H – T∆S, what would it mean if the value for free energy (∆G) is zero

A.The reaction is spontaneous
B.The reaction is in equilibrium
C.The reaction isn’t spontaneous
D.No reaction is possible

how long will take to charge my 4 -100 AH batteries?

I’m change my mind abour wind generator, insted, I’m thinking in buying 2 -130 watt solar panel , how can I calculate the charging time on my 4 -12v batteries? assuming is a shine day? any formulas that can help?

thanks .
I have a 1200 w continuous invertor , I’m planing to use it to power my kids tv’s and fans , all toghethers draw 360 continuous wats, can those 2 panels and batteries will be enough to supply power for 360w at least 5hrs. ? please reply. thanks again.

How would an infinite supply of free electrical energy change the world politics?

Steorn, an Irish company, has today claimed they have invented a technology that produces free, clean, and constant energy. Supposing they are right, what impact do you think this would have on our world?

How would an infinite supply of free electrical energy change the world we live in?

Steron, an Irish company, has today claimed they have invented a technology that produces free, clean, and constant energy. Supposing they are right, what impact do you think this would have on our world?
see www.steron.net
Sorry, that’s Steorn, not Steron

How would an infinite supply of free electrical energy change the world we live in?

Steron, an Irish company, has today claimed they have invented a technology that produces free, clean, and constant energy. Supposing they are right, what impact do you think this would have on our world?
see www.steron.net
Sorry, that’s Steorn, not Steron

Which of the following processes has a negative standard free energy change at 25°C?

a) CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (g)
b) 2Na (s) + 2H2O (l) → 2NaOH (aq) + H2 (g)
c) 2H2O (l) → 2H2 (g) + O2 (g)
d) Both a and b