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1. ### If in a nuclear reaction 2g mass disappears, how much energy will be released?

...a nuclear power station). So the mass is entirely converted into energy , with the formula e=mc^2 you can easily get the amount of energy the mass has...

4 Answers · Science & Mathematics · 25/06/2013

2. ### How much energy is required to completely melt 207. 2g of Pb at 8.00 degrees celsius?

heat energy = mass x specific heat x change in temp ......... eqn for heating up heat energy = heat of fusion x mass .... eqn for melting energy to heat up = (207.2)(.0306...

1 Answers · Science & Mathematics · 13/06/2008

3. ### If a fuel had a mass of 2g how much heat energy does each gram of fuel release?

If the energy /gram is given, the problem is solvable. Or if the type/name...

1 Answers · Science & Mathematics · 16/02/2013

4. ### What is the amount of energy released when 2g of O3 is converted into O2? Thermodynamics question *10 pts*?

...equation 2O₃(g) → 3O₂(g) ΔH(rxn) = -284.6 kJ ( 2g ) ( 1mole O₃ / 48g ) (-284.6 kJ / 2 moles of O₃) = -5...

2 Answers · Science & Mathematics · 05/12/2013

5. ### What is the amount of potential energy required to raise the temperature of 2g water by 12 degrees Centigrade?

It takes 4.184 Joules to raise a 1g of water 1 degree C. Thus it would take 24 x 4.184 to raise 2g of water 12C, or 100.416 Joules of energy .

1 Answers · Science & Mathematics · 28/05/2012

6. ### If 2g of water is initially 250Kelvin, what is the final temperature after 4.5kJ of energy is added?

... melts at 273K. 273-250=23K change. 23K* 2g *2.03J/gK=93.38J It takes 334 J/g...

1 Answers · Science & Mathematics · 05/04/2008

7. ### HELP How much energy is required to completely melt 207. 2g of Pb at 8.00 .....?

... Heat of Lead = 0.128J/g/°C. 207. 2g x 0.128J/g/°C x 319°C = 8,460J = 8.460kJ...

1 Answers · Science & Mathematics · 15/04/2008

8. ### How much energy is required to completely melt 207. 2g of Pb at 8.00 degrees celsius?

... Heat of Lead = 0.128J/g/°C. 207. 2g x 0.128J/g/°C x 319°C = 8,460J = 8.460kJ...

1 Answers · Science & Mathematics · 13/04/2008

9. ### 0.1g and 0. 2g bullets are fired at the same time with the same kinetic energy . Which does the most work?

That is correct. Had they been fired with the same VELOCITY, the heavier bullet would have done more work.

10 Answers · Science & Mathematics · 23/10/2006

10. ### Given the equation Cu(OH)2 + 357 kj = CuO + H2O, how much energy is required if 10. 2g of Cu(OH)2 react?

So one mole needs +357kj, that would be the mr of Cu(OH)2 which is 97.5g (63.5 + 2(16+1)) Therefore if 97.5g requires 357kj, 10.2 g requires 37.3 kj Hope this helps!

1 Answers · Science & Mathematics · 29/08/2011