2.) Average atomic mass =Σ (abundance x molar mass) /100
= (12.64 x 302.04 + 18.23 x 304.12 + 69.13 x 305.03) /100
=304.486 u(Dalton) . This is avg atomic mass.
2.54 moles of CaCl occupies 56.89 liters volume
Explanation:
- Each mole of any gas occupies 22.4 liters volume at STP.
- STP is defined as the standard temperature and pressure and those standard values are zero degree and one atmospherics pressure
- 22.4 liters is a constant number as Avogadro's number which is nothing but 6.022*
. - Hence, to convert 2.54 moles just multiply it with 22.4 L
- That is, 22.4*2.54= 56.89 L
- So, 2.54 moles of CaCl occupies 56.89 L volume space
Answer:
The complete question is as follows
Given the incomplete equation: 2 N2O5(g) ==> Which set of products completes and balances the incomplete equation?
A)2 N2(g) + 3 H2(g)
B)2 N2(g) + 2 O2(g)
C)4 NO2(g) + O2(g)
D)4 NO(g) + SO2(g)
The correct option is C) 4NO2(g) + O2(g)
Explanation:
Note that the products should be NO2 and O2 since the reactant is entirely made up of N and O. option A is not correct as hydrogen cannot emerge as a product in this reaction. Matter can never be created or be destroyed bu can only change in a chemical reaction. Option D is not also correct for the same reason.
Option B is not correct since it did not balance the number of atoms of O and N in the reactant side of the equation.
The option C) 4NO2(g) + O2(g) is therefore the right option since it balances both the elements and the number of atoms of the elements present.
Answer:
The difference in the properties of water can be attributed to physical changes to the hydrogen and oxygen atoms on a subatomic level. The properties of the gases are combined to give water its properties. When substances chemically combine, products with completely different properties form.
Answer:
Graham's law states that the rate of diffusion or of effusion of a gas is inversely proportional to the square root of its molecular weight
Explanation:
