Answer:
9.76 x 10²³molecules
Explanation:
Given parameters:
Mass of N₂O₅ = 175gram
Unknown:
Number of molecules = ?
Solution:
To find the number of molecules contained in the given mass, we need to find the number of moles of N₂O₅ first.
Number of moles = 
Molar mass of N₂O₅ = 2(14) + 5(16) = 108g/mol
Number of moles = 
= 1.62moles
Now;
1 mole of a substance = 6.02 x 10²³ molecules
1.62 mole of N₂O₅ = 1.62 x 6.02 x 10²³ = 9.76 x 10²³molecules
In the following terms
above, the best terms that matches the following are:
RNA - > 2. Nucleic
Acid =RNA is matched to Nucleic Acid
Sucrose - > 3. Carbohydrates
= Sucrose is matched to Carbohydrates
Steroids - > 4. Proteins
= Steroids is matched to Proteins
<span>Toxins - > 1. Lipids
= Toxins is matched to Lipids</span>
Answer:
Option C. Silver is a catalyst in this reaction.
Explanation:
From the question given, we discovered that the addition of silver in the reaction between ethene and oxygen produces epoxyethane at a much faster rate. This simply means that silver act as a catalyst in this reaction.
A catalyst is substance that increases the rate of a reaction without itself taking part in the reaction. The catalyst creates an alternate path way by lowering the activation energy so that the reaction can proceed at a much faster rate.
Since the addition of silver makes reaction to occur at a much faster rate, it therefore means that silver act as a catalyst in the reaction.
Answer:
Las fuentes secundarias son testimonios de segunda mano elaborados con posterioridad a los hechos ocurridos y basados en la información de las fuentes primarias, por ejemplo: libros y revistas, películas, video-documentales, series televisivas, textos escolares y mapas temáticos.
