Question

· A 0.100g sample of Mg when combined with O2 yields 0.166g of Mgo, a

second Mg sample with a mass of 0.144g is also combined with O2. What
mass of MgO is produced from the second sample?​

Answer 1

`m_(MgO)=0.239gMgO`

Step-by-step explanation:

Hello,

In this case, the chemical reaction between magnesium and oxygen to yield magnesium oxide is:

`2Mg+O_2\rightarrow 2MgO`

In such a way, for 0.144 g of magnesium reacting with sufficient oxygen, the mass of magnesium oxide, whose molar mass is 40.3 g/mol (2:2 mole ratio) turns out:

`m_(MgO)=0.144gMg*(1molMg)/(24.3gMg) *(2molMgO)/(2molMg)* (40.3gMgO)/(1molMgO) \\\\m_(MgO)=0.239gMgO`

Best regards.