Brandon's hands are cold from playing out in the snow. When he goes in the house, his mother hands him a mug of hot cocoa and his hands warm up. Why? A. Heat moves from the mug to his hands. B. Particles from the cocoa move to his hands. C. Cold from his hands is absorbed by the mug. D. Chemical energy from the cocoa changes to heat.

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

In science class richard learns that a substance has a boiling point of 230 fahrenheit his teacher ask him to convert this temperature to degrees celsius what is the boiling point of his substance in degrees celsius

Organisms are classified as producer or consumers according to the way they ?