Answer:
c. Hfus is always negative.
Explanation:
Because energy is released when fusing solids
Answer:
d.) Microwave photons cause the molecules to increase their rotational energy states, whereas infrared photons cause electrons in the molecules to increase their electronic energy states.
Explanation:
Microwave: transitions in the molecular rotational levels
Infrared: transitions in molecular vibrational levels
UV/Visible: transitions in electronic energy levels.
Answer:
yes
Explanation:
it started moving North 5 m/s
Answer:
Metal is copper.
Explanation:
Mass of a metal, m = 54 g
Heat energy required, Q = 773 J
The temperature changes from 63.0 °C to 100.0 °C.
We need to identify the metal. Heat required to raise the temperature is given by :
c is specific heat of the metal
We can identify the metal by finding its specific heat.
The metal is copper. Its specific heat is 
.
Like a rabbit eats grass and a hawk eats a rabbit if you didint have grass there would be no rabbits and without rabbit the hawk wouldn’t have food so there would be no hawks nor rabbits without grass
