Answer:
1 mole FeCr2/ 1 mole FeCr2O4
Explanation:
We have to write down the equation of the reaction before we can answer the question;
2C(s) + FeCr2O4(s) -------> FeCr2(s) + 2CO2(g)
By inspection of this reaction equation, we can clearly see that the mole ratio of the reactants and products is 2:1:1:2.
Specifically, the ratio of chromites to ferrochrome is 1:1
Hence;
The mole ration required to convert chromites to ferrochrome is;
1 mole FeCr2/ 1 mole FeCr2O4
Answer:
Soil contains minerals such as Iron, Zinc, Nitrogen compounds, etc. that are all essential to sustaining life. It also holds water and makes it available for plants to use. Soil also contains ores from which we can extract metals such as iron, copper, gold, and aluminum.
(Hope this helps) Sky
<u>Answer:</u> The temperature when the volume and pressure has changed is -27.26°C
<u>Explanation:</u>
To calculate the temperature when pressure and volume has changed, we use the equation given by combined gas law. The equation follows:
where,
are the initial pressure, volume and temperature of the gas
are the final pressure, volume and temperature of the gas
We are given:
![P_1=725mmHg\\V_1=12L\\T_1=30.00^oC=[30+273]K=303K\\P_2=252mmHg\\V_2=28L\\T_2=?K](https://tex.z-dn.net/?f=P_1%3D725mmHg%5C%5CV_1%3D12L%5C%5CT_1%3D30.00%5EoC%3D%5B30%2B273%5DK%3D303K%5C%5CP_2%3D252mmHg%5C%5CV_2%3D28L%5C%5CT_2%3D%3FK)
Putting values in above equation, we get:
Converting this into degree Celsius, we get:
Hence, the temperature when the volume and pressure has changed is -27.26°C
I think the answer is hmmm I think
