Answer: The sun
Explanation:
its the real boss of the water cycle, and it doesn't even live here on Earth. The sun provides heat, or energy, which is what makes the water cycle work. The sun's heat allows water to change forms from liquid to gas to ice and back again.
Answer 1) The group number of the most nonmetallic group that contains metalloids is Group VI A.
Explanation : Astatine (At) is the elemental metalloid which is found in group VI A which is placed in the bottom of most nonmetallic groups containing oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and the radioactive element polonium (Po).
Answer 2) The group number of the most metallic group that contains metalloids is Group III A.
Explanation : Boron (B) is the metalloid which belongs to group III A which is the most metallic groups containing aluminum (Al), gallium (Ga), indium (In) and thallium (Tl). Amongst the placement in the top of metallic group Boron behaves like a metalloid.
4 Ga (s) + 3 O₂ (g) → 2 Ga₂O₃ (s)
where:
(s) - solid
(g) - gas
Explanation:
At high temperature gallium (Ga) will react with oxygen gas (O₂) to produce solid gallium(III) oxide (Ga₂O₃).
Learn more about:
balancing chemical reactions
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Answer:
6 oxygens on the product side
Explanation:
1) balance the equation:
C2H4 + 3O2 → 2CO2 + 2H2O
2) calculate the number of oxygens on the product side
2CO2=4
2H2O=2
