Volume of a cube = mass/density
mass=100grams
density=1g/cm^3
volume is therefore= 100grams / 1gram/cm^3= 100cm^3
Answer:
See explanation
Explanation:
Air contains a mixture of several molecules and compounds such as oxygen and carbon dioxide.
We are asked to calculate the number of moles in a given mass of a substance. To be able to calculate it, we need the molar mass of the substance. For (NH4)2Cr2O7, the molar mass would be <span>252.07 g/mol. We calculate as follows:
0.025 g </span>(NH4)2Cr2O7 ( 1 mol / 252.07 g ) = 0.0001 mol <span>(NH4)2Cr2O7
Hope this answers the question. Have a nice day.</span>
P= 1.50 atm
V= 3 L
R= 0.08205<span> L∙atm/mol∙K
T= 300 K
n= ?
we all this information, we can tell that we need to use ideal gas formula
PV= nRT
if we rearrange the formula for n, we get--> n= PV/ RT
let's plug in the values.
n= 1.5 x 3/ (0.08205 x 300)= 0.18 moles
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Answer:
Channeling often occurs in a packed tower This phenomenon takes place when the. ... ------------EFFECT IN TOWERS AND COLUMNS Towers or columns are the ... instruments such as HPLC(high performance liquid chromatography-columns )
Explanation: