Kinetic energy maybe or something
Answer:
2.62*10^-3
Explanation:
To do this by hand, you need to understand the rules of scientific notation.
Answer:
Explanation:
Step 1
The question is based on the concept of PH and pOH calculations.
pH is defined as negative logarithmic of hydronium Ion concentration.
while pOH is defined as negative logarithmic of hydroxide ion concentration of the solution.
Step 2
[H+] = 7.7*10-7 M
pH = -log[H+]
= -log ( 7.7*10-7 )
= 6.12
Step 3
pOH = 14 - pH
= 14 - 6.11
= 7.89
The correct answer is In2O3 < Ga2O3 < Al2O3.
Ga2O3, Al2O3, and In2O3 are the oxides to rank in order of increasing aqueous acidity.
According to the contemporary periodic table's rule, an oxide group's acidity decreases.
The oxidation state of Gallium (Ga) in Ga2O3 = +3
The oxidation state of Aluminium (Al) in Al2O3 = +3
The oxidation state of Indium (In) in In2O3 = +3
From modern periodic table, the order of elements in group 3A is as below:
Baron (B), Aluminum (Al), Gallium (Ga), Indium (In), and Thallium (Tl)
Thus, we can get the oxides in order of increasing their aqueous acidity as below:
In2O3 < Ga2O3 < Al2O3
To learn more about aqueous acidity refer the link:
brainly.com/question/18648828
#SPJ4
Answer:
halogen
Explanation:
Group VIIA/halogen/ is the only group in periodic table in which all the elements are nonmetals. This group contains F, Cl, Br, I, and At. <em>Halogen</em> meaning salt producer.
