Chemistry Help? Please?

  • Thread starter Thread starter Antonia
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Antonia

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1. How many moles of water can be produced by burning 255 g of octane (C8H18)? 2C8H18(g) + 25O2(g) → 16CO2(g) + 18H2O(g)

2. What mass of water is produced by burning 275 g of methane, CH4?
CH4(g) + 2O2(g) → CO2(g) + 2H2O(g).

3. What mass of silver bromide can be produced from 45.2 g of silver nitrate? 2AgNO3(aq) + MgBr2(aq) → 2AgBr(s) + Mg(NO3)2(aq)

How do you do these questions? Thanks.
 
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