Question

4 sur 32
calculez la masse de 2 moles de dioxyde de carbone (co₂).
2 points
a 176 g
b 22 g
c 44 g
d 88 g

Explanation:

Step1: Calculate molar mass of \(CO_2\)

Molar mass of \(C\) is \(12\space g/mol\), molar mass of \(O\) is \(16\space g/mol\). For \(CO_2\), molar mass \(M = 12 + 2\times16 = 44\space g/mol\).

Step2: Calculate mass of 2 moles

Using formula \(m = n\times M\), where \(n = 2\space mol\), \(M = 44\space g/mol\). So \(m = 2\times44 = 88\space g\).

Answer:

D. 88 g