Answer:
2K + Br2 --> 2KBr is the answer
Answer: The volume of the balloon up there is 6.192 L.
Explanation:
Given:
= 1.80 L,
= 785 mm Hg (mm Hg = 0.00131579) = 1.032 atm
= 0.300 atm,
= ?
Formula used to calculate volume is as follows.

Substitute the value into above formula as follows.

Thus, we can conclude that the volume of the balloon up there is 6.192 L.
Answer: The metal that has a greater reactivity is more easily oxidized.
Explanation:
Oxidation is when the elements lose electrons and increase their oxidation state.
The metals tend to react by losing electrons and form the corresponding cation.
For expample, sodium (an alkalyne metal) loses one elecron and form the cation Na¹⁺ , then this cation combine with an anion and form compounds like NaCl, NaOH. The same do the other alkalyne metals.
Magnesium (an alkalyne earth metal) loses two electrons and form the cation Mg²⁺, then it combines with some anions to form compounds, like MgSO₄, Mg(OH)₂.
So, the easier the metal gets oxidized the greater its reactivity.
Answer:
It's nitrogen
Explanation:
cuz it has valence 3 and a diatomic gas at room temperature