00:01
So in part a of this question, magnesium metal burns in oxygen to form magnesium oxide.
00:07
So write a balanced equation for the reaction.
00:10
So when magnesium react with oxygen, it will form magnesium oxide.
00:14
So as you can see, oxygen atoms are not balanced.
00:18
So in order to balance the oxygen atom, i'm using the stochometric coefficient 2 in magnesium.
00:24
And the stochometric coefficient 2 in magnesium oxide, so that magnesium.
00:30
Magnesium atom as well as oxygen atom are balanced so this is the balanced chemical equation in the part b of this question the mass of oxygen and mass of magnesium oxide we have to find out and we are given the mass of magnesium so from stochometry so from stochometry as you can see two mall of magnesium so two of magnesium react with one more of oxygen and form two mall of magnesium oxide so from stochometry two mall of oxygen react with the one more oxygen and produce two mall of magnesium oxide so from stockometry i can say two mall of magnesium react with one more of oxygen so two mall magnesium that means 2 into 24 gram magnesium that rate with 32 gram oxygen so therefore for the given 25 gram of magnesium, then it react with how many grams of oxygen.
01:29
So simply 32 upon 2 into 24 multiplied by 24 gram oxygen.
01:33
So on simplification, we get the value 16 .66 gram oxygen.
01:40
Then in the next case, we have to find the mass of magnesium oxide...