Question

When 9.76*10⁻⁵ kg of magnesium is heated in air, the product formed, magnesium oxide had a mass of 0.1618g(MgO). What was the mass of oxygen needed to produce the final product 0.1618g MgO

Answer 1

To determine the mass of oxygen needed to produce the final product of 0.1618g of magnesium oxide (MgO), we need to calculate the difference in mass between the initial mass of magnesium (Mg) and the final mass of MgO.

Given that the initial mass of magnesium is 9.76 * 10⁻⁵ kg, we can convert it to grams by multiplying by 1000:

Initial mass of Mg = 9.76 * 10⁻⁵ kg * 1000 g/kg = 0.0976 g

Now, let's calculate the difference in mass between the initial mass of magnesium and the final mass of MgO:

Mass of oxygen = Mass of MgO - Mass of Mg

Mass of oxygen = 0.1618 g - 0.0976 g

Mass of oxygen = 0.0642 g

Therefore, the mass of oxygen needed to produce the final product of 0.1618g MgO is 0.0642 g.

Step-by-step explanation: