Answer:
To solve this problem, we can use the calorimetry formula that relates the heat transfer between the system and the surroundings:
Q = mc∆T
where Q is the heat transfer, m is the mass, c is the specific heat capacity, and ∆T is the temperature change.
We can assume that the heat lost by the glass and the calorimeter is equal to the heat gained by the water. Therefore, we can write:
Qglass + Qcalorimeter = Qwater
Substituting the values given in the problem, we get:
mglass x 0.8372 x (26.6 - 90) + 7 x 1.23 x (26.6 - 24.3) = 75 x 4.184 x (26.6 - 24.3)
Solving for mglass, we get:
mglass = 10.8 g
Therefore, the mass of the glass was 10.8 g.
I hope this answer helps you understand how to use the calorimetry formula to find the mass of an object. Thank you for chatting with me.