Answer:
ΔT = 0.61°C
Explanation:
That's the formula for the colligative property of freezing point depression:
ΔT = m . Kf . i
AlCl₃ is a ionic salt that be dissociated:
AlCl₃ → Al³⁺ + 3Cl⁻ i = 4
In solution, we can have 4 moles of ions, 1 mol of Al³⁺ plus 3 moles of chloride. (We assume 100 %ionization)
Let's replace data: ΔT = 0.082 m . 1.86 °C/m . 4
ΔT = 0.61°C
4 and 1. I had this same test and those were it
Answer:
Single bond examples H2 Cl2
H-H
Cl-Cl
Double bond examples O2 O=O
Ethene CH2=CH2
Triple bond examples N2 and ethyne
Explanation:
False. The closest Shell to the nucleus is called the “1 shell” valence electrons are the electrons of an atom that are located at the uppermost shell of the electron, which is called the valance shell. it has 7 electrons in its second shell which is its outer most shell and so it will have 7 valance electrons.