Answer:
Explanation:
The gas ideal law is
PV= nRT (equation 1)
Where:
P = pressure
R = gas constant
T = temperature
n= moles of substance
V = volume
Working with equation 1 we can get
![n =\frac{PV}{RT}](https://tex.z-dn.net/?f=n%20%3D%5Cfrac%7BPV%7D%7BRT%7D)
The number of moles is mass (m) / molecular weight (mw). Replacing this value in the equation we get.
or
(equation 2)
The cylindrical container has a constant pressure p
The volume is the volume of a cylinder this is
![V =(pi)*r^{2}*h](https://tex.z-dn.net/?f=V%20%3D%28pi%29%2Ar%5E%7B2%7D%2Ah)
Where:
r = radius
h = height
(pi) = number pi (3.1415)
This cylinder has a radius, r and height, h so the volume is ![V =(pi)*r^{2}*h](https://tex.z-dn.net/?f=V%20%3D%28pi%29%2Ar%5E%7B2%7D%2Ah)
Since the temperatures has linear distribution, we can say that the temperature in the cylinder is the average between the temperature in the top and in the bottom of the cylinder. This is:
Replacing these values in the equation 2 we get:
(equation 2)
Answer:
Organic evolution is the theory that more recent types of plants and animals have their origins in other pre-existing forms and that the distinguishable differences between ancestors and descendents are due to modifications in successive generations.
Explanation:
Answer:
This new temperature is 97.7 mL
Explanation:
Step 1: Data given
Volume = 0.225 L
STP = 1 atm and 273 K
Pressure = 2.7 atm
Temperature = 320 K
Step 2: Calculate new volume
(P1*V1)/T1 = (P2*V2)/T2
⇒with P1 = the pressure at STP = 1 atm
⇒with V1 = the volume = 0.225 L
⇒with T1 = the temperature at STP = 273 K
⇒with P2 = the new pressure = 2.7 atm
⇒with V2 = the new volume = TO BE DETERMINED
⇒with T2 = the new temperature = 320 K
(1atm *0.225 L)/273 K = (2.7 atm * V2) /320 K
8.24 * 10^-4 = 2.7 * V2 / 320K
2.7V2 = 0.264
V2 = 0.0977 L = 97.7 mL
This new temperature is 97.7 mL
Magnesium and Calcium are both in Group 2 of the periodic table. This means that they have the same number of electrons on the outer shells. (2)
They have similar properties as elements in the same group has similar properties
Answer:
Explanation:
2 mole x 6.023x 10^23atoms/mole =12.04 atoms