In the table of atomic particles, various symbols have two numbers. the top number represents the atomic mass of the particle, what do the bottom numbers represent? select all that apply. atomic weight charge atomic number number of neutrons number of positrons number of electrons number of mesons number of protons

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a. the mitochondria b. the nucleus c. the vacuoles d. the endoplasmic reticulum

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?