Molarity is defined as the number of moles in 1 L of solution
number of moles of sodium acetate is - 8.56 g / 82.03 g/mol = 0.104 mol
number of acetate moles in 750.0 mL - 0.104 mol
then number of acetate moles in 1000 mL - 0.104 mol / 0.7500 L = 0.139 mol/L
molarity of sodium acetate is 0.139 M
A proton has a positive charge of 1
I'll go through them one by one
1) H-S
The electronegativity of Hydrgoen is 2.2, and sulphur is 2.58,
therefore the difference is 0.38 (2.58-2.2=0.38)
2) H-Cl
Hydrogen: 2.2, Chlorine: 3.16
therefore difference is 0.96
3) N-H
Nitrogen: 3.04, Hydrogen: 2.2
therefore difference is 0.84
4) C-H
Carbon: 2.55, hydrogen: 2.2
therefore difference is 0.35
so, the most apparent electronegativity is chlorine, but this could have been done without actually doing the maths. The trend of electronegativty increases across a period and increases up a period due to the strong affinity of the nucleus with bonding electrons. This does not include noble gases though, as they have no charge due to having complete valance shells. T<span>he most electronegative element is Fluorine (9), and the least electronegative element (besides noble gases) is Francium (87)</span>
Answer:
name : ethane
number of carbon atoms:2
formula: C2H6
Name: propane
Number of carbon atoms : 3
Formula: C3H8
Explanation:
Answer:
Higher principal energy levels consist of orbitals which are larger in size than the orbitals from lower energy levels. The effect of the greater number of principal energy levels outweighs the increase in nuclear charge and so atomic radius increases down a group.