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Iron oxide reacts with carbon to give iron and carbon monoxide according the equation

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Iron oxide reacts with carbon to give iron and carbon monoxide according the equation: Fe2
O3 + 3C → 2Fe + 3CO
How many grams of C are required to react with 16.5 g of Fe2O3 ?

2. A sample of nitrogen gas initially has a volume of 750 mL at 10°C. What is the new volume of the gas if the temperature is changed to 50°C, and the pressure is not changed?

3. How much mannitol (in grams) is present in 250 mL of a 15% (m/v) aqueous solution of mannitol?

6. A soap solution has a [OH-] = 1 x 10-6 M. Calculate the [H3O+] concentration. Is the solution acidic, basic, or neutral?

 
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