The materials available to make a model of Earth are shown. To make the most accurate model, which of the materials would best represent the asthenosphere?
Modeling day
dense, flexible
solid
Ping pong ballchain
Thin, hollow
light solid
Ball bearing:
Metal
dense, solid
Water
liquid
O
Modeling clay
O
Ping pong ball
O
Ball bearing
O
Water

The answer for #3 is c but i don't know why

Which statements are true about electrolysis? check all that apply. electrolysis requires an acid be present. electrolysis is described by two half-reactions. electrolysis is not an industrial process. electrolysis results in commercially valuable products. electrolysis involves the transfer of electrons. reduction results in the loss of electrons. oxidation results in the loss of electrons.

How many moles are in 250 grams of tungsten (w)? * 4.4x10^23 moles 4.2x10^23 moles 0.7 moles 1.4 moles