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Exercício de Massa molecular
Exercício:
Para atrair machos para o acasalamento, muitas espécies fêmeas de insetos secretam compostos químicos chamados feromônios. Aproximadamente 10-12 g de tal composto de fórmula C19H38O devem estar presentes para que seja eficaz. Quantas moléculas isso representa?
Informações Adicionais:
Dados:
massas molares:
C= 12g/mol
H= 1g/mol
O= 16g/mol
C19H38O MM= 282g
282g ——————— 6,02×10²³ moléculas
10-12g ——————- X
X = 0,0213475×10¹¹ ou
2,13×109 moléculas
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