Answer:
2RbNO₃ + BeF₂ → Be(NO₃)₂ + 2RbF, because Be keeps a 2+ charge throughout the reaction
Explanation:
2RbNO₃ + BeF₂ → Be(NO₃)₂ + 2RbF, because Be keeps a 2+ charge throughout the reaction
Rb is a +1 cation, NO3 is a -1 anion, Be is a +2 cation and F is a -1 anion.
In writing an ionic compound the charge of the cation becomes the subscript of the anion and the charge of the anion becomes the subscript of the cation.
So the ionic compound formed between Be2+ and F- is BeF2. The ionic compound formed between Be2+ and NO3- is Be(NO₃)₂.
As there are two NO₃ on the product side it is balanced by writing a 2 coefficient before RbNO₃ on the reactant side.
And as there are two F on the reactant side it is balanced by writing a 2 coefficient before RbF on the product side.
Answer: 204.2 g/mol
Explanation:
Elevation in boiling point is given by:
= Elevation in boiling point = 
= boiling point constant = 
m = molality
where,
n = moles of solute = 
= weight of solvent in g = 1g
Molality =
Putting in the values we get,
The molar mass of caryophyllene is 204.2 g/mol.
Answer:
4th
Explanation:
n = 4, l = 4, m = 4 L cant be 4 when n is 4.
n = 1, l = –2, m = 0 L can only be positive integers such as 0,1,2,3,4,5
n = –1, l = 0, m = 0 n can only be positive integers or capital letters such as K,L,M,N..
n = 4, l = 3, m = 3 these quantum numbers represent a subshell in 4f orbital
