In science class, students measured the length of a flagpole shadow at different times during the day. The table shows the data collected by the students. Based on the table, what is the range of the shadow length?
a) 1
b) 1.5
c) 2
d) 3

For each of the following types of reactions, write a general reaction formula in the symbolic form—for example, a + b → ab. single-displacement double-displacement synthesis decomposition

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa