Answer:
Option D. The number of oxygen atom is the same before and after the reaction.
Explanation:
From the question given above, the following were obtained:
Robin's equation:
H₂ + O₂ —> H₂O
Alex's equation
2H₂ + O₂ —> 2H₂O
To know which equation better represents the reaction, we shall determine which of the equation is balanced.
For Robin:
H₂ + O₂ —> H₂O
Element >>> Reactant >>> Product
H >>>>>>>>> 2 >>>>>>>>>> 2
O >>>>>>>>> 2 >>>>>>>>>> 1
Robin's equation is not balanced because the number of atoms of each element in the reactant and product are not equal.
For Alex:
2H₂ + O₂ —> 2H₂O
Element >>> Reactant >>> Product
H >>>>>>>>> 4 >>>>>>>>>> 4
O >>>>>>>>> 2 >>>>>>>>>> 2
Alex' equation is balanced because the number of atoms of each element in the reactant and product are equal.
Thus, option D gives the right answer to the question.
I believe the answer is Magnetic Force
Answer:
B. 4.76 atm
Explanation:
= Initial pressure = 3.8 atm
= Initial temperature = 
= Final pressure
= Final temperature = 
From Gay Lussac's law we have
The pressure inside the can would be 
.
Answer:
There are 2 nitrogen atoms on the product side.
N2 + 3H2
There are 6 hydrogen atoms on the reactant side.
2NH3
Hope I Helped
B. stars form large groupings
