Mass=density x volume, i.e. 1.03 x 85.32 = 87.88 g
Answer
Hello
I think the reaction is like this FeO+OFe²O³
And the balance reaction is 2Fe+OFe²O³
Explanation:
At first we should find sth that has more atoms than the other then for example we realized that we have two atoms of Fe in Fe²O³ then put 2 before FeO and now we have 2 atoms of Fe in right side and 2 atoms of Fe in left then Oxygen in FeO change to 2 atoms of Oxygen and we have an other one in right side that they become 3 atoms of Oxygen and now we have 3 atoms of Oxygen in both right and left side.
Finally our reaction balanced.
Good luck
Answer:
About 0.1738 liters
Explanation:
Using the formula PV=nRT, where p represents pressure in atmospheres, v represents volume in liters, n represents the number of moles of ideal gas, R represents the ideal gas constant, and T represents the temperature in kelvin, you can solve this problem. But first, you need to convert to the proper units. 215ml=0.215L, 86.4kPa is about 0.8527 atmospheres, and 15C is 288K. Plugging this into the equation, you get:
![0.8527\cdot 0.215=n \cdot 0.0821 \cdot 288\\n\approx 7.754 \cdot 10^{-3}](https://tex.z-dn.net/?f=0.8527%5Ccdot%200.215%3Dn%20%5Ccdot%200.0821%20%5Ccdot%20288%5C%5Cn%5Capprox%207.754%20%5Ccdot%2010%5E%7B-3%7D)
Now that you know the number of moles of gas, you can plug back into the equation with STP conditions:
![1V=7.754 \cdot 10^{-3} \cdot 0.0821 \cdot 273\\V\approx 0.1738L](https://tex.z-dn.net/?f=1V%3D7.754%20%5Ccdot%2010%5E%7B-3%7D%20%5Ccdot%200.0821%20%5Ccdot%20273%5C%5CV%5Capprox%200.1738L)
Hope this helps!