Answer:
D 2,2
Explanation:
We can see that there are 2 chlorines on the reactant side so there has to be a 2 on the product side
Now we have Na + Cl2 --> 2NaCl
The problem now is that there are 2 sodiums on the product side so add a 2 to the Na on the reactant side
2Na + Cl2 --> 2NaCl
Now it's balanced!
The temperature decreases because there is no ozone in the mesosphere and the amount of air is decreasing.
Answer:
The change was physical, meaning it went from liquid to solid, or the other way around.
Explanation:
<span>It is higher than the pressure on the outside of the bottle.</span>
Answer:
The atomic radius increases down the group because more shell are added
Explanation:
Al >B
Na>Al
S>O
O>F
Br>Cl
Mg>Ca