Answer:
80mL
Explanation:
Step 1:
Data obtained from the question.
Initial Volume (V1) = 40mL
Initial temperature (T1) = –123°C
Final temperature (T2) = 27°C
Final volume (V2) =..?
Step 2:
Conversion of celsius temperature to Kelvin temperature.
T(K) = T(°C) + 273
Initial temperature (T1) = –123°C =
–123°C + 273 = 150K
Final temperature (T2) = 27°C = 27°C + 273 = 300K
Step 3:
Determination of the final volume.
This can be obtained as follow:
V1/T1 = V2/T2
Initial Volume (V1) = 40mL
Initial temperature (T1) = 150K
Final temperature (T2) = 300
Final volume (V2) =..?
V1/T1 = V2 /T2
40/150 = V2 /300
Cross multiply
150 x V2 = 40 x 300
Divide both side by 150
V2 = (40 x 300) /150
V2 = 80mL
Therefore, the new volume of the gas is 80mL
Answer:
0.749351061980325 moles (Exact)
0.75 moles (Rounded to the nearest hundredth)
Hope this Helps!
(Sorry if the answer is confusing)
Answer:
You should avoid moldy foods as much as possible
Explanation:
Mold might produce harmful mycotoxins in all types of foods, but mycotoxin levels are tightly regulated. That said, you should avoid moldy foods as much as possible, especially if you have a respiratory allergy to mold. Nevertheless, accidentally ingesting it will probably not cause any harm.
Answer:
3.01x10^23
Explanation:
In order to determine the amount of molecules, you have to use Avogadro's number which = 6.02x10^23. To calculate this, multiply the number of moles with Avogadro's number to get the above answer.
Hope this helps!
Answer:
53.4 gMol-1
Explanation:
Let the mass of the unknown gas be M
Let the molar mass of hydrogen gas be 2×1=2gMol-1
Time for diffusion of unknown gas = 12.5 min
Time for diffusion of hydrogen= 2.42 min
From Graham's law:
t1/t2=√M1/M2
Hence:
2.42/12.5= √2/M
Hence M= 53.4 gMol-1
