Well , it can be a lot of things. stimulus slow down the body . so it may be a, c, d
KMnO₄ :
K = + 1
Mn = + 7
O = - 2
<span>What is the oxidation number of manganese is + 7
hope this helps!</span>
Answer:
neither photosynthesis nor respiration.
Explanation:
Photosynthesis is the process by which the green plants, in the presence of sunlight makes their own food. In the process carbon dioxide is absorbed and oxygen is released.
Respiration is the intake of oxygen and the metabolism of the glucose in which it is breakdown and releases carbon dioxide.
In neither of the two processes, carbon dioxide is splitted.
Answer:
The percent yield is 77.18%.
Explanation:
1st) According to the balanced reaction, 1 mole of Pb(NO3)2 reacts with 2 moles of KI to produce 2 moles of KNO3 and 1 mole of PbI2.
We can convert the moles to grams using the molar mass of Pb(NO3)2 (331.2g/mol), KI (166g/mol) and KNO3 (101g/mol):
- Pb(NO3)2 conversion: 331.2g
- KI conversion: 332g
- KNO3 conversion: 202g
2nd) Now, with the stoichiometry of the reaction in grams we can calculate the grams of KNO3 that must be produced (this is the Theoretical yield):
So, this is the theoretical amount of KNO3.
3rd) With the theoretical yield (20.03g) and the Actual yield (15.46g) we can calculate the percent tield:
So, the percent yield is 77.18%.
D.soil
because air gets warm on a hot summers day very easy so does water and concrete but soils tempt. stays cooler during the summer than your other answers.