Answer:
..............what.......
Exothermic gives off heat/energy and endothermic takes in heat/energy. Exothermic example: a candle flame
Endothermic example: baking bread
In Exothermic, you can expect the surrounding temp. to rise, and in Endothermic you can expect the surrounding temperature to fall.
Hope this helps
Answer:
No It is not
Two of the same atoms are most likely not identical
Answer:
The answers to your questions are given below.
Explanation:
1. __H₂ + __O₂ —> __H₂O
The above equation can be balance as follow:
H₂ + O₂ —> H₂O
There are 2 atoms of O on the left side and 1 atom on the right side. It can be balance by writing 2 before H₂O as shown below:
H₂ + O₂ —> 2H₂O
There are 2 atoms of H on the left side and a total of 4 atoms on the right side. It can be balance by writing 2 before H₂ as shown below:
2H₂ + O₂ —> 2H₂O
Now the equation is balanced.
Elements >>> Reactants >>> Products
H >>>>>>>>> 4 >>>>>>>>>>> 4
O >>>>>>>>> 2 >>>>>>>>>>> 2
2. __ P₄ + __O₂ —> __P₂O₃
The above equation can be balance as follow:
P₄ + O₂ —> P₂O₃
There are 4 atoms of P on the left side and 2 atoms on the right side. It can be balance by writing 2 before P₂O₃ as shown below:
P₄ + O₂ —> 2P₂O₃
There are 2 atoms of O on the left side and a total of 6 atoms on the right side. It can be balance by writing 3 before O₂ as shown below:
P₄ + 3O₂ —> 2P₂O₃
Now, the equation is balanced
Elements >>> Reactants >>> Products
P >>>>>>>>> 4 >>>>>>>>>>> 4
O >>>>>>>>> 6 >>>>>>>>>>> 6
