Which of the following is required for dark reactions to take place?
a. light
b. oxygen
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d. water

The enthalpy of formation of water is -285.8 kj/mol. what can be inferred from this statement?

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.

Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine