Answer:
The answer to your question: I think is letter c
Explanation:
2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)
a.- Precipitation: is incorrect because for this kind of reactions one of the products must be a precipitate and in the reaction we see that NAOH is soluble in water (aq) and H2 is a gas, none of them precipitate.
b. acid - base: the reactants must be an acid and a base, and the reactants of this reaction has a base but it's in the products.
c. Redox: This reaction is a redox reaction because for this reaction the oxidation numbers of the reactants must change and this happen in this reaction (H changes from +1 to 0) and Na changes from 0 to +1.
d. Combination. In this reaction the reactants combine to form a new compound and this doesn't happen here.
e. None of the above. is false because letter C is correct.
Answer:
La metrología es la ciencia que se ocupa de las mediciones, unidades de medida y de los equipos utilizados para efectuarlas, así como de su verificación y calibración periódica.
<span>stage 1: The thylakoid captures light energy.</span>
First question answer is, C<span>. electrons
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Answer: 0.745 g of 
will be produced from 1.08 g of sodium sulfate
Explanation:
To calculate the moles :
is the limiting reagent as it limits the formation of product and 
is the excess reagent.
According to stoichiometry :
3 moles of produce = 3 moles of
Thus 0.0076 moles of will require=
of
Mass of 
Thus 0.745 g of will be produced from 1.08 g of sodium sulfate
