The density of a sample of nitrogen gas (N₂) that exerts a pressure of 5.30 atm in a 3.50-L container at 125°C is 4.54 gm/litre
<h3>What is the
Ideal Gas Law ?</h3>
This law combines the relationships between p, V, T and mass, and gives a number to the constant.
The ideal gas law is:
pV = nRT
where n is the number of moles, and R is universal gas constant.
The value of R depends on the units involved, but is usually stated with S.I. units as: R = 8.314 J/mol·K
The values given in the question are
p= 5.30 atm , V=3.50 L
T (in Kelvin) = 125+273 K
= 398 K
R = 0.0821 L·atm /mol·K
The Ideal Gas equation can be re written as
pM=DRT
M is the molar mass , D is the density
M for N₂ is 28 gm/mol
so density can be determined as
![\rm D= \dfrac{p M}{RT} \\\\\rm D= \dfrac{5.3\; \times 28}{0.082 \;\times398} \\\\\rm D =4.54 gm/litres](https://tex.z-dn.net/?f=%5Crm%20D%3D%20%5Cdfrac%7Bp%20M%7D%7BRT%7D%20%5C%5C%5C%5C%5Crm%20D%3D%20%5Cdfrac%7B5.3%5C%3B%20%5Ctimes%2028%7D%7B0.082%20%5C%3B%5Ctimes398%7D%20%5C%5C%5C%5C%5Crm%20D%20%3D4.54%20gm%2Flitres)
Therefore the density of a sample of nitrogen gas (N₂) that exerts a pressure of 5.30 atm in a 3.50-L container at 125°C is 4.54 gm/litre
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Answer:
Boron and/or Polonium
Explanation:
In the periodic table, you can see a stair-stepped line starting at Boron (B), atomic number 5, and going all the way down to Polonium (Po), atomic number 84. Except for Germanium (Ge) and Antimony (Sb), all the elements to the left of that line can be classified as metals.
1. pesticides: that are sprayed on crops and flowers
2. global warming: warm winters have caused plants to shift their schedules. when the honey bees come out of hibernation, the flowers they need to feed on have already bloomed and died
3. pathogens carried by mites weaken bees
S =gr/mr x 1000/v
s=4,5/58 x 1000/500
s=4,5/58 x 2
s=9/58
s= 0,1
Answer: I believe it is B