The electron B. is the smallest part of an atom.
Answer:
B. The only planet to support life.
Explanation:
The answer is B. Enzymes.
Enzymes are biological catalysts that help cause reactions in your body.
Answer:
D. its actual size and distance from an observer
Explanation:
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hope it helped u
Answer:
Endothermic
It absorbs heat
1.20 × 10³ kJ
Explanation:
Let's consider the following thermochemical equation.
2 H₂O(l) → 2 H₂(g) + O₂(g) ΔH = 572 kJ
Since ΔH > 0, the reaction is endothermic, that is, it absorbs heat when H₂O reacts.
572 kJ are absorbed when 36.03 g of water react. The heat absorbed when 75.8 g of H₂O react is:
75.8 g H₂O × (572 kJ/36.03 g H₂O) = 1.20 × 10³ kJ