Answer:
As blood travels through the body, oxygen is used up, and the blood becomes oxygen poor. Oxygen-poor blood returns from the body to the heart through the superior vena cava (SVC) and inferior vena cava (IVC), the two main veins that bring blood back to the heart.
Explanation:
Answer:
a. 4,00L
b. 16,00L
c. 12,31L
Explanation:
Avogadro's law says:
![\frac{V_1}{n_1} =\frac{V_2}{n_2}](https://tex.z-dn.net/?f=%5Cfrac%7BV_1%7D%7Bn_1%7D%20%3D%5Cfrac%7BV_2%7D%7Bn_2%7D)
a. If initial conditions are 2,30mol and 8,00L and you lose one-half of atoms, that means you have 1,15mol:
![\frac{8,00L}{2,30mol} =\frac{V_2}{1,15mol}](https://tex.z-dn.net/?f=%5Cfrac%7B8%2C00L%7D%7B2%2C30mol%7D%20%3D%5Cfrac%7BV_2%7D%7B1%2C15mol%7D)
<em>V₂ = 4,00L</em>
b. If initial conditions are 2,30mol and 8,00L and you add 2,30mol, that means you have 4,60mol:
![\frac{8,00L}{2,30mol} =\frac{V_2}{4,60mol}](https://tex.z-dn.net/?f=%5Cfrac%7B8%2C00L%7D%7B2%2C30mol%7D%20%3D%5Cfrac%7BV_2%7D%7B4%2C60mol%7D)
<em>V₂ = 16,00L</em>
c. 25,0g of Ne are:
25,0g × (1mol / 20,1797g) = 1,24 moles of Ne. That means you have 2,30mol - 1,24mol = 3,54mol of Ne
![\frac{8,00L}{2,30mol} =\frac{V_2}{3,54mol}](https://tex.z-dn.net/?f=%5Cfrac%7B8%2C00L%7D%7B2%2C30mol%7D%20%3D%5Cfrac%7BV_2%7D%7B3%2C54mol%7D)
<em>V₂ = 12,31L</em>
I hope it helps!
Answer:
Bombardment by asteroids
Explanation:
All of the other ones explain themselves