Answer:
An energy pyramid shows the flow of energy at each trophic level in an ecosystem. A pyramid shape is used because energy is lost at each trophic level when organisms use it up.
Explanation:
Hey there!
Given the reaction:
4 AI + 3O2 ------> 2 AI2O3
4 moles Al --------- 3 moles O2
9.30 moles Al --------- ?? moles O2
9.30 * 3 / 4 => 6.975 moles of O2
Molar mass O2 => 32.0 g
Therefore:
6.975 * 32.0 => 223.3 g of Oxygen
Hope that helps!
Answer:
Explanation:
Given data:
Number of frame is 12+ 8 = 20
Total filtrate is 360 lb
we know
For 1 plate area 
Then for 20 are PLATE 
filtrate equation is given as
In the above equation only t and A is variable , all other terms are constant
Therefore we have
![\frac{t_2}{t_1}= \frac{A_1}{A_2} = [\frac{65}{105.33}]^2 = 0.36](https://tex.z-dn.net/?f=%5Cfrac%7Bt_2%7D%7Bt_1%7D%3D%20%5Cfrac%7BA_1%7D%7BA_2%7D%20%3D%20%5B%5Cfrac%7B65%7D%7B105.33%7D%5D%5E2%20%3D%200.36)
Answer:
Al (s) + 3Fe3+ (aq) ---> Al3+ (aq) + 3Fe2+(aq)
Explanation:
atoms become positive (or less negative) ions when they lose electrons. They become negative (or less positive) ions when they gain electrons, since each electron (e-) has a charge of -1.
So, since Al changes to Al3+ which is positive, it loses electrons. And when Fe3+ changes to Fe2+, it becomes less positive, so it gained electrons.
Now, write the half (balanced) equations:
Al ---> Al3+ + 3e-
Fe3+ + e- ----> Fe2+
To combine both equations, we have to eliminate electrons. To do so, make sure both half equations have the same no. of electrons. We can multiply the equation of Fe by 3 so that it has 3 electrons.
3Fe3+ + 3e- ----> 3Fe2+
Finally, we can combine both equations (remember to eliminate the electrons).
Al (s) + 3Fe3+ (aq) ---> Al3+ (aq) + 3Fe2+(aq)
Check to see if both sides of the equation have equal charges. Ions always have an aqueous state.
