Answer:
They might not be bringing in enough oxygen from the air. It's hard to play soccer if you don't have enough oxygen in your cells. They might not be breaking down starch to make glucose.
Explanation:
Answer:
The pH is approximately: 2.1549
Explanation:
pH = - log(0.007)
I would say Na. Oxygen has 2 valence electrons and when reacting with other molecules, the ones with the fullest or emptiest shells will react the least. Both H2 and Na are in the Alkali Metals in the first row, but since H2 has 2 molecules, it would use more oxygen than Ana
We will assume complete dissociation.
Since we have the molarity of OH solution, we can calculate the p(OH) as follows:
p(OH) = -log(molarity of OH) = -log(<span>7.5×10-3) = 2.1249
It is known that: p(H) + p(OH) = 14
Therefore, p(H) can be calculated as follows:
p(H) = 14 - p(OH) = 14 - 2.1249 = 11.875</span>
Your answer is A. When I balance equations, I take inventory of what I have on each side and how many I have. So in the first equation you have 2 Na on both sides. You have 1 Cl on both sides. You have 2 Hydrogens on both sides. You have 1 SO4 on both sides. Therefore, both sides of the equation are equal AKA balanced.
Also, when balancing equations, it's easier to leave your sulfates, sulfites, phosphates, phosphites, etc. in their formula because it's easier to balance.
I hope I was able to help. Best of luck!