What is the unit of measurement for the amount of electrical energy consumed during work?
1 answer:
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First you need to work out what mass of 84g of stainless steel is nickel, and because there's 5% you can simply divide by 20, giving 4.2g
For this you can use the equation
The mass, as was worked out previously, is 4.2g
The Mr, which is found on the periodic table, is 28
Moles =
= 0.15mol
1mol = 6.023 x
atoms
So, 0.15mol = 0.15 x 6.023 x = 9.0345 x 
atoms
For this you can use the equation
The mass, as was worked out previously, is 4.2g
The Mr, which is found on the periodic table, is 28
Moles =
1mol = 6.023 x
So, 0.15mol = 0.15 x 6.023 x
We subtract the enthalpies of the reactants from that of the products:
Since this is < 0, this is an exothermic reaction.
Since this is < 0, this is an exothermic reaction.