Answer:
invalid
Explanation:
Just imagine doing this experiment MULTIPLE TIMES and one of the trials you get 72 Kcal while in another u get 12kcal. It doesn't make sense. Somewhere in the experiment she went wrong. So its invalid
Answer:
Block Y is heavier than Block X.
Explanation:
Answer:
See below
Explanation:
Reactions require successful collisions between elements or molecules. A rise in temperature increases the movement of molecules. The more movement, the more collisions. The more collisions, the more reactions. The collisions release energy as heat which warms the flask and so on.
Answer:
15 moles.
Explanation:
Hello,
In this case, the undergoing chemical reaction is:
Clearly, since carbon and oxygen are in a 1:1 molar ratio, 15 moles of carbon will completely react with 15 moles of oxygen, therefore 15 moles of oxygen remain as leftovers. In such a way, since carbon and carbon dioxide are also in a 1:1 molar ratio, the theoretical yield of carbon dioxide is 15 moles based on the stoichiometry:
Best regards.
Answer:
The answer to your question is:
Explanation:
2.45 g of Phosphorus
MW P = 31 g
MW P2O5 = 2(31) + 5(16) = 142 g
From the balance reaction
4 P ⇒ 2 P2O5
Then 4(31) g P ⇒ 2 (142) g P2O5
124g of P ⇒ 284 g of P2O5 Rule of three
2.45g P ⇒ x
x = 2.45 x 284/124 = 695.8/124 = 5.61 g of P2O5
