Answer:
81 J.
Explanation:
From the question given above, the following data were obtained:
Specific heat capacity (C) = 0.45 J/gK.
Temperature change (ΔT) = 15 K
Mass = 12 g
Heat required (Q) =?
The heat required to raise the temperature of iron can be obtained as illustrated below:
Q = MCΔT
Q = 12 × 0.45 × 15
Q = 81 J
Therefore, the heat required to raise the temperature of the iron is 81 J.
We will have the following:

So, the force is approximately 1.85*10^-6 N.
Here are the observations
<u>S</u><u>u</u><u>g</u><u>a</u><u>r</u><u>:</u><u>-</u>
- Sugar is soluble in water
- so It will dissolve in water .
<u>C</u><u>o</u><u>r</u><u>n</u><u> </u><u>s</u><u>y</u><u>r</u><u>u</u><u>p</u><u>:</u><u>-</u>
- Corn syrup is also basically a sugar.
- It will dissolve in water too .
- If we shake the mixture in glass then corn syrup will be dissolved.
<u>O</u><u>i</u><u>l</u><u>:</u><u>-</u>
- Oil is not soluble in water
- Hence it won't dissolve in water.
- It will float over water and make two layers