The correct answer among the choices is the first option. The movement of the molecules inside a block of iron when it is heated is affected by the movement being faster as compared to the first conditions. Temperature is said to be directly proportional to kinetic energy which means as temperature increases, the kinetic energy also increases. Therefore, molecules now are moving faster.
Explanation:
We see any object because of reflection of light. When light, strikes a body, get reflected and received by human eye, the image formed in retina is what brain process and tells you that there is an object there.
Se would be the answer I think. Hop this helped!
CH4 + 2O2 → CO2 + 2H2O + 890 kJ
MM of CH4 = (12.01 + 4x1.008) g/mol = 16.04 g/mol
Moles of CH4 = 45.5 g CH4 x (1 mol CH4/16.04 g CH4) = 2.837 mol CH4
q = 2.837 mol CH4 x (890 kJ/1 mol CH4) = 2520 kJ
