Question

What mass of magnesium bromide is formed when 1.00 g of
magnesium reacts with 5.00 g of bromine?

Answer 1

Answer:

Mg + O2 ------> MgO

if 1.00 g of magnesium is ignited in a flask containing 0.500liters of oxygen at STP, how many grams of magnesium oxide areproduced?

what is the name and the amount of the reactant inexcess?

My work:

1g Mg/24.3g=0.041 mol Mg;

0.5L O2/22.4L=0.022 mol O2; So O2 is the LR; 0.022 molx 56.3g/mol=1.24g MgO2.

0.041mol Mg-0.022mol O2=1.24mol Mg inexcess. Am I right? Thanks!

Explanation:

tq