Answer:
The enthalpy change during the reaction is -7020.09 kJ/mole.
Explanation:
First we have to calculate the heat gained by the calorimeter.
where,
q = heat gained = ?
c = specific heat =
= final temperature =
= initial temperature =
Now put all the given values in the above formula, we get:
The heat gained by water present in calorimeter. = q'
where,
q' = heat gained = ?
m = mass of water =
c' = specific heat of water =
= final temperature =
= initial temperature =
q ' = 12,060.38 J
Now we have to calculate the enthalpy change during the reaction.
where,
= enthalpy change = ?
Q = heat gained = -(q+q') = -(2,485.25 J + 12,060.38 J)= -14,545.63 J
Q = -14.54563 kJ
n = number of moles fructose =
Therefore, the enthalpy change during the reaction is -7020.09 kJ/mole.
Answer:
The volume occupied by 2.18 moles of is 48.832L
Explanation:
The volume occupied by 1 mole of is 22.4 L
The volume occupied by 1 mole of any gas is 22.4 L
The number of moles of = 2.18 moles
The volume occupied by 2.18 moles of :
Hence, the volume occupied by 2.18 moles of is 48.832L
The mass of gas A is 11.56. i got this answer by 0.68 multiplied by 17. because in this problem the key word is times.
Answer:
Scientists use models to study atoms because atoms are extremely small and can't even be seen. If atoms can't be seen, it's easier to study and.
Explanation:
hope it helps you
<h2>
Answer:True</h2>
Explanation:
Contact force is defined as the force a pair of objects experience when they are in contact.
Ex.normal force,friction.
Non-contact forces are defined as the forces a pair of objects experience even if they are not in contact.
Ex.electric force,magnetic force.
Given that a contact force exist between two interacting objects that physically contact each other. A non-contact force exist when two interacting objects are not in physical contact but can still influence each other.
So,the given statements are true.