Answer:
<h2>78.13 J</h2>
Explanation:
The kinetic energy of an object can be found by using the formula
m is the mass
v is the velocity
From the question we have
We have the final answer as
<h3>78.13 J</h3>
Hope this helps you
Answer:
See explanation
Explanation:
The rate of reaction depends on on the concentration of reactants. As the concentration of reactants increases, the rate of reaction increases likewise.
If we look at the table, we will discover that the concentration of the thiosulphate is increasing because the volume of water added is decreasing. As such, the rate of reaction increases simultaneously.
Since the rate of reaction increases, the time taken for the cross to disappear decreases steadily. Hence, the values in the last column of the table decreases steadily.
Answer:
0.125
Explanation:
no of moles = given mass / molar mass
no of moles = 7/
molar mass of calcium oxide = atomic mass of calcium + oxygen
molar mass = 40 + 16
molar mass = 56
no of moles = 7/ 56 = 1/8 = 0.125
The greater amount is the solvent and the lesser amount is the solute.
Hence ethanol(200g) which is the greater amount is the solvent here.
And water (145g) which is lesser is the solute here.
