Answer:
Oil is the most viscous liquid.
Crushing a can, breaking glass, cutting paper, boiling water, chopping wood, and mixing water and sand
Some examples of endothermic reactions include melting solid salts, cooking an egg, baking bread, water evaporations and melting ice cubes
This problem applies Hess' Law to come up with the final reaction from a series of reactions given. Equation (1) stays as it is. Equation (2) should be inverted and divided by 2. Equation (3) is simply divided by 2. The energies should also correspond to the operations. Adding the net energies of each reaction, the total energy is 155.65 kJ. Hence, the answer is A.
Light moves in a straight line except at surfaces between different transparent materials, where its path bends.
