Students were asked to answer a question at school and to indicate what is most important for them to succeed. Out of the many comments, the one that that stood out was practice. Persons who surely are successful do not become successful by being born. They work hard and dedicate their lives to succeeding. This is how you can reach your goals. followed below are one of the answer and question example that you could benefit from to practice and improve your information and also give you insights that could assist you to sustain your study in school.
Question:
2.56 g of hydrogen reacts completely with 20.3 g of oxygen to form X g of water. X =___g
Answer:
Answer:
22.9g of H₂O are produced
Explanation:
The reaction of hydrogen with oxygen is:
2H₂(g) + O₂(g) → 2H₂O(g)
Where 2 moles of hydrogen react with 1 mole of oxygen to produce 2 moles of water
Moles of hydrogen are:
2.56g × (1mole / 2.01g) = 1.27moles H₂
Moles of oxygen are:
20.3g × (1mole / 32g) = 0.634moles O₂
These moles of oxygen react with:
0.634moles O₂ × (2mol H₂ / 1mol O₂) = 1.27mol H₂
-All hydrogen in reaction-
And produce:
0.634moles O₂ × (2mol H₂O / 1mol O₂) = 1.27mol H₂O
In grams:
1.27mol H₂O × (18.01g / 1mol) = 22.9g of H₂O are produced
From the answer and question examples above, hopefully, they could simply guide the student resolve the question they had been looking for and take notice of all the details declared in the answer above. You could possibly then have a discussion with your classmate and continue the school learning by studying the subject to one another.