Answer is
<span>a.Scientific investigation discovers new information that can be used in technological design, and technological design provides new products that can further scientific investigation.
Scientific investigation helps to discover new information, such as greater insight into how the world works. This information can be applied to technological design, illuminating new ways to do things. </span>
I think that the best phrase to fit into the blank is a "scientific theory".
A scientific theory is developed through experiments which use the scientific method, and a theory can be improved if additional data is available or if people provide suggestions which make the theory fit the data better.
<u>Given:</u>
Mass of the ionic compound = 10.00 g
Mass of water = 75.0 g
Initial temperature of water T1= 23.2 C
Final temperature of water T2 = 31.8 C
Specific heat of water c = 4.18 J/gC
<u>To determine:</u>
Enthalpy of dissolution of the ionic compound
<u>Explanation:</u>
Heat gained by water is given as:
Q = mcΔT
m = mass of water
c = specific heat
ΔT = change in temp of water = T2-T1
Q = 75.0 g * 4.18 J/gC * (31.8-23.2)C = 2696 J
Now,
Heat gained by water = heat lost by the ionic compound (i.e. heat of dissolution)
Thus, q(ionic) = 2696 J
ΔH = q(ionic)/mass of ionic compound = 2696 J/10.00 g = 2.7 *10² J/g
Ans: A) enthalpy change = 2.7*10² J/g
If, (.525m)(100 cm/m)(1/2.54 in/cm) = 20.7 in or C