Chemical change is most often indicated by a change in color.
The two types of evidence are used to classify organisms are micro and organic
Answer: freezing and evaporation for sure
Explanation:
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Answer:</h3>
482.596 grams
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Explanation:</h3>
The relationship between moles, molar mass and mass of a compound is given by;

In this case;
The compound in question is P₂O₅
Molar mass of P₂O₅ = 141.94 g/mol
Rearranging the formula;
Mass = Moles × molar mass
Therefore;
Mass of P₂O₅ = 3.4 mol × 141.94 g/mol
= 482.596 grams
Therefore, mass of P₂O₅ is 482.596 grams
It is used as a before and after or step by step proces