Magnesium burns in air with a dazzling brilliance to produce magnesium oxide: 2Mg (s) + O2 (g) →→ 2MgO (s) When 4.50 g of magnesium burns, the theoretical yield of magnesium oxide is g.

Explanation:

2Mg (s) + O2 (g) →→ 2MgO (s)

The equation is already balance

Given that 4.5g of Mg yield Mg0

Then molar mass of each element

Mg=24g/mol

O2=16g/mol

2Mg= 2×24=48g/mol

2MgO=2(24+16)

2MgO=80g/mol

Then, the number of mol of Mg is

Molar mass=mass/mole

Mole=mass/molar mass

Mole=4.5/48

Mole=0.09375mole

Number of mole of magnesium is 0.09375mole

2 mole of Mg produce 2mole of MgO

Therefore they are in ration 1:1

Then 0.09375mole of Mg will produce 0.09375mole of MgO

Then the mass of MgO yield is

Mass=molar mass of 2MgO ×mole

Mass=80×0.09375

Mass=7.5g

Therefore, 7.5g of MgO will be yield

a plasma is a warm ionized gasoline consisting of approximately equal numbers of definitely charged ions and negatively charged electrons. the characteristics of plasmas are notably unique from the ones of ordinary neutral gases in order that plasmas are considered a awesome "fourth kingdom of remember."