Agas is confined to a cylinder under constant atmospheric pressure, as illustrated in
figure 5.4. when 0.49 kj of heat is added to the gas, it expands and does 214 j of work
on the surroundings. what are the values of ∆h and ∆e for this process?
delta h is the main issue i'm having trouble understanding.

Solar energy is energy from the sun that is converted into thermal or energy. a. nuclear b. mechanical c. electrical d. chemical

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

What are the trends and exceptions to the trends in electron affinity?