Answer:
+5
Explanation:
You use the rules for oxidation numbers to calculate that the oxidation number of N is +5.
Answer:
Dissolved oxygen and temperature
Explanation:
According to study.com:
<em>"For aquatic ecosystems, these factors include light levels, water flow rate, </em><em>temperature</em><em>, </em><em>dissolved oxygen</em><em>, acidity (pH), salinity and depth. "</em>
According to ck12.org:
<em>"Aquatic biomes are distinguished by the availability of sunlight and the concentration of </em><em>dissolved oxygen</em><em> and nutrients in the water."</em>
Answer:
B 100 cm3
Explanation:
The balanced equation is given as;
2H2(g)+ O2(g) --> 2H2O(g)
From the reaction stochiometry, 2 cm3 of H2 would react with 1 cm3 of O2 to form 2 cm3 of H2O
Before Reaction --> 100cm3 of H2, 25cm3 of O2, 0cm3 of H2O
During Reaction --> 50cm3 of H2, 25cm3 of O2, 50cm3 of H2O
(Oxygen is sed uup in the reaction)
After Reaction --> 50cm3 of H2, 0cm3 of O2, 50cm3 of H2O
Total volume left = Unreacted H2 (50cm3) + 50cm3 of H2O formed
Total Volume left = 50 + 50 = 100cm3