Computer Shopper 125/Computer Shopper CD-ROM Issue 125 (1998-07)(Dennis Publishing).iso/EuroChem/database/classify/script/ID684.Scn

Text File | 1997-10-21 | 1.8 KB | 114 lines

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@At 135,15
Quantitative chemistry is all about the quantities of substances
involved in a chemical reaction.
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@At 130,56
Here the amount of reactants used in a reaction is being measured.

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@At 395,86
Next the reaction is carried out.

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@At 128,324
Finally the product which we know is iron sulphide is weighed
again. Assuming that all the reactants have reacted what is
the weight of the product? #[N36]g

'@Answer 88

'@Feedback Wrong
'#bNo#b, nothing is lost in a chemical reaction so the mass of the product will be 88g.
'@Animation BoseGrim

'@Feedback Correct
'#bYes#b, nothing is lost in a chemical reaction.

'@Animation BoseSmile


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@At 126,290
In a chemical reaction the mass of the reactants is always equal
to the mass of the products.
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@At 123,340
This is the scientific law known as the #bconservation of mass#b .
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 mass#b .
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