Reaction warms the water between
The heat-producing, or
the life jacket and someone's body.

Which is true of transition metals when moving from left to right on the periodic table? the d sublevels are not filled across the period. the cation radii become larger across the period. atomic radii increase slightly and then start to decrease. atomic radii decrease slightly and then start to increase. o

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.