Answer:
Q= 6213.72 J
Explanation:
Given that
n = 2.2 moles
T= 490 K
Given that gas is ideal gas and process is isothermal.
We know that internal energy for ideal gas only depends on the temperature.The temperature change in the isothermal process is zero.That is why internal energy change will be zero.
ΔU = 0
From first law of thermodynamics
Q = ΔU + W
Q= W
We know that work for isothermal process
Given that V₂ = 2 V₁
R=gas constant = 0.0821 atm.L/K.mol
W= 2.2 x 0.0821 x 490 ln2 atm.L
W=61.34 atm.L
W=Q= 61.34 atm.L
We know that
1 atm.L = 101.3 J
Q= 6213.72 J
Answer:
by counting each individual atom and making sure the number of each kind of atom is the same in the reactants and the products. - This is the answer.
Explanation:
Answer:
Part a)
W = 16.7 N
Part b)
r = 2.45 R
Explanation:
Part a)
As we know that acceleration due to gravity on the surface of moon is 1/6 times the gravity on the surface of earth
So the force due to gravity will decrease by the factor of 6
so we will have
Part b)
For the same value of the weight as the surface of moon the acceleration due to gravity of earth must be 1/6 times
so we have
Answer:
1) D
2) A
Explanation:
1) Each group has the same number of valence electrons, which are the outer electrons.
2) Ionic bonds are between a metal and non - metal, the metal being sodium and the non - metal being chlorine.
Answer:
14.3 km
Explanation:
We motion of the car consists is split in two parts:
- A first motion 12 km north
- A second motion 7.8 km west
The two motions are in directions perpendicular to each other: this means that we can find the magnitude of the net displacement by using Pythagorean's theorem, therefore:
where
Substituting, we find