It all depends on the subject you’re are studying for. Different subjects require different methods of studying. For example, science. Try doing practice questions and practice tests. Go back to old tests and see what mistakes you made. Read your old notes. Make flash cards of practice questions. Create a study guide of everything that you have done so far. Do active recall.
Answer:
See explanation.
Explanation:
Hello!
In this case, since the main molecular reaction that is taken place in the beaker is:
![AgNO_3(aq)+BaI_2(aq)\rightarrow AgI(s)+Ba(NO_3)_2(aq)](https://tex.z-dn.net/?f=AgNO_3%28aq%29%2BBaI_2%28aq%29%5Crightarrow%20AgI%28s%29%2BBa%28NO_3%29_2%28aq%29)
In such a way, we understand that one breaker contained silver nitrate and the other one barium iodide. Thus, the complete molecular equations turns out:
![2AgNO_3(aq)+BaI_2(aq)\rightarrow 2AgI(s)+Ba(NO_3)_2(aq)](https://tex.z-dn.net/?f=2AgNO_3%28aq%29%2BBaI_2%28aq%29%5Crightarrow%202AgI%28s%29%2BBa%28NO_3%29_2%28aq%29)
Now, for the complete ionic equation, we just ionize the aqueous species:
![2Ag^++2NO_3^-+Ba^{2+}+2I^-\rightarrow 2AgI(s)+Ba^{2+}+2(NO_3)^-](https://tex.z-dn.net/?f=2Ag%5E%2B%2B2NO_3%5E-%2BBa%5E%7B2%2B%7D%2B2I%5E-%5Crightarrow%202AgI%28s%29%2BBa%5E%7B2%2B%7D%2B2%28NO_3%29%5E-)
Finally, for the net ionic equation we cancel out barium and nitrate ions as the spectator one because they are both sides on the equation:
![2Ag^++2I^-\rightarrow 2AgI(s)](https://tex.z-dn.net/?f=2Ag%5E%2B%2B2I%5E-%5Crightarrow%202AgI%28s%29)
Best regards!
Answer:
producer to decomposer
Explanation:
This is because in a food chain , energy flow from one trophic level to another. The producer which include plants are the source of energy which they manufacture good in the presence of light energy from sun. Energy flow directly from the producer to the primary consumer which are heterotrophs that feed on plants. Energy flow from consumer to decomposer after the consumer died and it is decayed.
<u>Answer:</u> The amount of hydrogen gas produced in the reaction is 1.04 moles
<u>Explanation:</u>
We are given:
Moles of Mg = 2.08 moles
Moles of HCl = 2.08 moles
The chemical equation for the reaction of magnesium and HCl follows:
![Mg+2HCl\rightarrow MgCl_2+H_2](https://tex.z-dn.net/?f=Mg%2B2HCl%5Crightarrow%20MgCl_2%2BH_2)
By Stoichiometry of the reaction:
2 moles of HCl reacts with 1 mole of magnesium metal.
So, 2.08 moles of HCl will react with =
of magnesium metal.
As, given amount of magnesium metal is more than the required amount. So, it is considered as an excess reagent.
Thus, HCl is considered as a limiting reagent because it limits the formation of product.
By Stoichiometry of the reaction:
2 moles of HCl produces 1 mole of hydrogen gas
So, 2.08 moles of HCl will produce =
of hydrogen gas
Hence, the amount of hydrogen gas produced in the reaction is 1.04 moles