Explanation:
both iron and sulphur in FeS2 undergo a change in oxidation state.
O2° -->2O degree2- Total decrease = 2×2=4
So, 4FeS2+11O2 --> 2Fe2O3+8 SO2
Hence, balanced
Answer:
n = 2 mol
Explanation:
Given data:
Number of moles of water vapors = ?
Volume of water vapors = 44.8 L
Temperature = 273 K
Pressure = 1 atm
Solution:
The given problem will be solve by using general gas equation,
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
by putting values,
1 atm × 44.8 L = n×0.0821 atm.L/ mol.K × 273 K
44.8 L. atm = n×22.4 atm.L/ mol
n = 44.8 L. atm /22.4 atm.L/ mol
n = 2 mol
The air is so dry that when it hits a snowpack, the frozen water evaporates, going directly from the ice to vapor and bypassing the liquid phase entirely. This is called sublimation, and it's a common way for snow to disappear in the arid West."
10 km/h
Because if you take 35 and multiply it by 2, and take 0.5 and multiply it by 2, you get 70 kilometers in 1 hour. Therefore, 70-60 is 10 km/h
Answer:
D
Explanation:
PV =nRT
So V and T are inversely proportional
