Answer:
chlorous acid HClO₂
Explanation:
The Ka is the acidity constant and it tells you about the acidity strength of a compound. If the value of Ka is high the compound is a strong acid. If the value of Ka is low the compound is a weak acid.
The problem gives us the following compounds with the Ka values:
HF, 3.5 × 10⁻⁴
HCOOH, 1.8 × 10⁻⁴
HClO₂, 1.1 × 10⁻²
HCN, 4.9 × 10⁻¹⁰
HNO₂, 4.6 × 10⁻4
The chlorous acid HClO₂ have the highest Ka, 1.1 × 10⁻², so this one is the strongest acid.
Protons and nuetrons :) ! hope this helps and please rate
<span>The rate of crystallizing is equivalent to the rate of dissolving.</span>
Answer:
has molar mass of 142 g.
Explanation:
Firstly we will find out the atomic weight of the elements of the compound.
Mg = 24 P = 31 Al = 27 Cl = 35 Ba = 137 O = 16
Now 1st compound is , in this compound there is 1 atom of Magnesium and 2 atom of Chlorine.
So atomic weight of =
2nd compound is , in this compound there is 2 atom of Phosphorus and 5 atom of Oxygen.
So atomic weight of =.
3rd compound is , in this compound there is 1 atom of Barium and 2 atom of Chlorine.
So atomic weight of =
4th compound is , in this compound there is 1 atom of Aluminium and 3 atom of Chlorine.
So atomic weight of =
Hence the substance having molar mass of 142 g is .
I would say E because you shouldn't/can't do any of those! Dangerous!!!