Answer:
A
Explanation:
its a because that is the first thing you do
Density= mass/volume. volume= 12 x 6 x 10. 415/720=.57g/cm^3
Answer:
The mass of the surrounding is 
Explanation:
From the question we are told that
The mass of
is 
The mass of water is 
The chemical equation for the dissociation process is

The specific heat capacity of the mixture is 
The combined mass of the solution is

The mass of the surround here is the mass of the coffee-cup calorimeter and this contain the mixture ( water and the NaOH ) so the mass of the surrounding is

Explanation:
The answer to questions are
A) 4
B) 3
C) 5
D) 3
E) 3