Because of the surface tention.
C=Carbon Mass percent of: 44.4424 %
H=Hydrogen Mass percent of: 3.7296 %
N=Nitrogen Mass percent of: 51.8280 %
Answer:
Part A
The natural abundance of Si-30 = 3.1
Part B
The mass of Si-30 = 29.9551 amu
Explanation:
Part A
The sum of the natural abundances = 100
Si-28 has a mass of 27.9769 amu and a natural abundance of 92.2%.
Si-29 has a mass of 28.9765 amu and a natural abundance of 4.67%
Si-30's mass and natural abundance are unknown.
Natural abundance for Si-30 = 100% - 92.2% - 4.67% = 3.13% = 3.1% to 2 s.f.
Part B
The total atomic mass of an element is an addition combination of the mass and natural abundances of all the isotopes of that element.
Molar mass of Silicon normally = 28.0855 amu
Let the mass of Si-30 be m
28.0855 = (27.9769×0.922) + (28.9765×0.0467) + (m×0.0313)
28.0855 = 27.14790435 + 0.0313m
0.0313m = 28.0855 - 27.14790435 = 0.93759565
m = (0.93759565/0.0313) = 29.9551325879 amu = 29.9551 amu
Hope this Helps!!
Answer:
P=681.07mmHg
Explanation:
gas law:
(V1 * P1 ) / T1 = (V2 * P2 ) / T2
⇒ P2 = ( V1 * P1 * T2) / ( T1 * V2)
∴ V1 = 4.6L;
P1 = 365mmHg * 0.001315 atm / 1 mmHg = 0.48 atm
T2 = 36°C + 273 = 309 K
T1 = 20 °C + 273 = 293 K
V2 = 2.6 L
⇒ P2 = ((4.6 L) * (0.48 atm) * (309 K)) / ((293 K) * (2.6 L))
⇒P2 = 0.895 atm ( 681.07 mmHg)
when compressing the gas inside the cylinder, the internal pressure increases
