Answer:
C) 2 Na + 2 H2O → 2 NaOH + H2.
Explanation:
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In this case, according to the given chemical reactions, it is possible to firstly understand that a single displacement reaction is characterized by the presence of a single element as the first reactant and a compound as the second one, thus, yielding a compound as the first product and a single element as the second one.
In such a way, according to the given choices, it possible to note that C) 2 Na + 2 H2O → 2 NaOH + H2 is the only one with the aforementioned condition as the element at the reactants side is Na and at the products side is H2.
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GravitationL force is equal to the mass of the object multiplied by the acceleration due to gravity. Assuming that this object is on earth, the acceleration due to gravity is 9.8 m/s^2. Therefore, 10 kg multiplied by 9.8 m/s^2 is equal to 98 N for the gravitational force.
Therefore, the gravitational force acting on an object that has a mass of 10.0 kg (assuming this object is on earth) is 98 N.
Answer:
Biotic factor
Explanation:
Competition only exist due to limited resources (abiotic factors AKA environment) which occurs in biotic factors (living organisms).
Fear factor is nonsense because fear does not exist in plants but they still compete for sunlight and water.
Factory factor is nonsense as well because this term does not exist in biology.
