The balanced chemical reaction is :
![O_2 + 4Na \ -> \ 2Na_2O](https://tex.z-dn.net/?f=O_2%20%2B%204Na%20%5C%20-%3E%20%5C%202Na_2O)
Number of moles of Na,
.
Now, from balance chemical reaction we can see that 1 mole of oxygen reacts with 4 moles of sodium.
So, number of moles of oxygen are :
![n = \dfrac{0.635}{4}\ mole](https://tex.z-dn.net/?f=n%20%3D%20%5Cdfrac%7B0.635%7D%7B4%7D%5C%20%20mole)
So, amount of oxygen required is :
![m = \dfrac{0.635 \times 32}{4}\ gm\\\\m = 5.08 \ gm](https://tex.z-dn.net/?f=m%20%3D%20%5Cdfrac%7B0.635%20%5Ctimes%2032%7D%7B4%7D%5C%20%20gm%5C%5C%5C%5Cm%20%3D%205.08%20%5C%20gm)
Therefore, 5.08 gram of oxygen will react with 14.6 gram of sodium.
B.
Spring tides occur during a new/full moon. The sun, moon and earth form a straight line during these phases.
Explanation:
a) 3Pb(NO3)2 + Al2(SO4)3 ---> 3PbSO4 + 2Al(NO3)3
Double displacement
b) 2Cl2 + 3O2 ---> 2Cl2O3
Synthesis
c) 2Fe2O3 + 3C ---> 4Fe + 3CO2
single displacement
Answer:
70 180 000 kg
Explanation:
We can solve this problem by multiplying the amount of garbage each Canadian throws out each day (2.2 kg) by the number of Canadians:
- 2.2 kg/person * 31 900 000 persons = 70 180 000
Thus according to this problem, all Canadians throw out 70 180 000 kg of garbage each day.
Copper is current voltage above 40 or 200 . copper useful for motor and some medicine