Arrange carbon, phosphorus and sulfur in order of reactivity to write their reaction with oxygen.

Which of the following true? a_volcanoes and earthquakes often near the plate boundaries. b_volcanoes occur whereve there are tall mountains. c_earthquakes cause volcanoes in the same location to erupt violently d_volcanoes and earthquakes occur only where plates are colliding with each other

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

Identify arrows pointing to bonding electrons. done h-0-0-h ) intro