B is remaining the constant speed for 4 mins
The excess reactant is Aluminum.
<u>Explanation:</u>
We have to write the balanced equation as,
4 Al+ 3 O₂ → 2 Al₂O₃
According to the molar ratio 4: 3, from the given balanced equation, we can say that 4 atoms of Al reacted with 3 molecules of oxygen.
Given that 10 atoms of aluminum reacts with 6 molecules of oxygen, as per the ratio only 8 atoms of Aluminum is required to react with 6 molecules of oxygen, so excess reactant is Aluminum.
C.) There are FIVE states of matter in total
Answer: The percentage of juice present in new punch is 62.5 %.
Explanation:
In 20 cup of punch = 75 % of juice
Cup of juices in 20 cup of punch =
of juice
After addition of 4 cups of water the total volume of punch becomes:
= (15 cups of juice + 5 cups of water)+ (4 cups of water added more) = 24 cups
Percentage of the juice in new punch juice is:
The percentage of juice present in new punch is 62.5 %.