A lubricant is a substance, usually organic, introduced to reduce friction between surfaces in mutual contact, which ultimately reduces the heat generated when the surfaces move. It may also have the function of transmitting forces, transporting foreign particles, or heating or cooling the surfaces.
Earthquake is a shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth's lithosphere that creates systemic waves. These systemic waves are vibrations that travel through the earth carrying the energy released during an earthquake. A seismic gap is the area along a fault where there has not yet been any earthquake activity for a long period of time.
Answer:
The correct answer is option (1).
Explanation:
Mass of the sample = 5.5 g
Percentage of carbon in sample = 35 %
Percentage of oxygen in sample = 100% - 35%
Mass of carbon in a sample: (35%) of 5.5 g
Mass of oxygen in a sample: (100%-35%) of 5.5 g
<span>In a nuclear reaction, mass is converted to energy according to the famous relation E = mc^2
So the best answer is :
</span><span>C. During a chemical reaction, some of the mass of the reactants is converted to energy.</span>