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fiasKO [112]
3 years ago
13

Match each form from energy with its description

Chemistry
1 answer:
Yanka [14]3 years ago
3 0
Green with the first one
Blue with the second one
Orange with the third one

So basically there already all lined up
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A certain system absorbs 350 joules of heat and has 230 joules of work done on it what is the value of
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According to the law of conservation of mass, the amount of BARIUM present of the reactants is the same as the amount present in the products (the precipitate). 

(11.21 g BaSO4) / (233.4 g/mol BaSO4) = 0.0480 mol BaSO4 and original barium salt 

(10.0 g) / (0.0480 mol) = 208.3 g/mol 

So it must have been BaCl2, because the molar mass of Barium is 137 which leave 71 grams left. Since Barium is a +2 charge, it means the atom next to it must be twice. Chlorine mass is 35, which twice is 71
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The best way to balance an equation is to balance one atom at a time.
You start with two Au atoms on the left, so you know the coefficient of Au on the right has to be 2. So at first we get,
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