It takes 3.2 × 10^3 J of heat to melt an amount of gold (△Hf = 6.30 × 10^4 J/kg). How much gold do you have? 0.051 g , 0.51 g , 19 g , or 51 g ?

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It takes 3.2 × 10^3 J of heat to melt an amount of gold (△Hf = 6.30 × 10^4 J/kg). How much gold do you have? 0.051 g , 0.51 g , 19 g , or 51 g ?

Physics
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please, for previous answer, I think inert gas, so not plasma
inert gas means a gas composed by neutral atoms
ohh okay! so gas is the solution?

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yes!
ookay!! yay!! what about this one?
here we have to compute this: \[m = \frac{Q}{{\Delta {H_f}}}\] where m is the mass of melted gold
ok! what do we plug in? :/
hint: \[m = \frac{Q}{{\Delta {H_f}}} = \frac{{3.2 \times {{10}^3}}}{{6.3 \times {{10}^4}}}\]
okay! so we get 0.0507 so our solution is 0.051 g ?
no, it is 0.051 Kg
ohh and so converted to g that becomes 0.51 g? :/
i forget the conversoins :/
no, it is 0.051*1000=...grams
ohh right so our solution is 51 g ? :O
yes!
yay! thank you:)
:)

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