Find the atomic number and atomic mass for silicon on the periodic table. Use this information to determine the number of protons in a silicon atom. 12
14
28.09
28

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.

Robert leaves a chocolate bar in his car while attending school all day. when he goes to his car in the afternoon, the bat has changed into gooey liquid. what happened to the chocolate bar

The image below shows a weather service map.. i’m not sure if is correct