C₃H₃O i think. tell me if i’m wrong
Answer:
6 atm
Explanation:
Using the formula P1V1=P2V2
P1= Initial Pressure
V1= Initial Volume
P2= Final Pressure
V2= Final Volume
And knowing that at stp gas will always be at 1 atm
250L(P2) = 1500
P2= 6 atm
Helium has the largest ionization energy, while francium has one of the lowest.
Answer:
C2H4Cl
Explanation:
The first step in obtaining the empirical formula is to divide the percent by mass of each element by its relative atomic mass;
C- 37.83/12, H- 6.35/1, Cl- 55.83/35.5
3.15, 6.35, 1.57
Divide through by the lowest ratio
3.15/1.57, 6.35/1.57, 1.57/1.57
2, 4, 1
Hence, empirical formula is C2H4Cl
Answer:
1. Increase in the temperature of the water
2. Increasing the surface area of the lithium
Explanation:
1. Increase in the temperature of the water
The activation energy for the lithium water reaction is +161 kJ/mol while the activation energy for the sodium is +109 kJ/mol, hence for increased reaction rate, the water temperature will be raised to enable more lithium atoms enter into reaction with the water molecules as their energy is increased lowering the activation energy required for the reaction.
2. Increasing the surface area of the lithium
As the lithium floats on the water, due to its low temperature and the heat evolved from the reaction of lithium with the cold water is below the melting point of lithium, the reaction rate can be increased by increasing the surface area of lithium sample by grinding so as to increase the number of lithium water reaction sites.