Answer : The pressure of hydrogen gas is, 739.3 torr
Explanation :
As we are given:
Vapor pressure of water = 18.7 torr
Barometric pressure = 758 torr
Now we have to calculate the pressure of hydrogen gas.
Pressure of hydrogen gas = Barometric pressure - Vapor pressure of water
Pressure of hydrogen gas = 758 torr - 18.7 torr
Pressure of hydrogen gas = 739.3 torr
Therefore, the pressure of hydrogen gas is, 739.3 torr
Answer:
1) The chemical equation is:
Al + CuCl2 ---> Cu + AlCl3
2) You have to balance the equation to state the coefficients:
2Al + 3CuCl2 ---> 3Cu + 2Al Cl3
3) Now the coefficients tell you the molar ratios.
2 mol Al : 3 mol CuCl2 : 3 mol Cu : 2 mol AlCl3
4) The molar ratio of CuCl2 to Al is:
3 mol Cu Cl2 / 2 mol Al = 3/2 = 1.5
Explanation:
yo que se wey nose una particula
The main difference between the 2 is that Ca, posses the complete number of electrons including valence electrons as per any atom of Ca. As a result it is electrically neutral, as it has the same number of protons as electrons. In terms of atomic radius, it is larger than Ca^+2, because 2 electrons have been removed from a valence shell, and thus the distance from the nucleus of the ion to the outer occupied shell is smaller than for the atom of Ca.
(a) CO₂(s) ⇌ CO₂(g) is an example of sublimation.
<em>Sublimation</em> is the conversion of a <em>solid directly to a gas</em> without going through the liquid phase.
