I think the beach has humid air.
Answer:
Explanation:
The second line in the Pfund series corresponds to a transition from n = 7 to n = 5.
To calculate the wavelength of the transition, we can use the Rydberg equation:
where
If n₁ = 5 and n₂ = 7
Salt is a pure substance because it it a compound. It can not be broken down any further. Milk is not a pure substance because it is a mixture and can still be broken down. It is made up of many elements. Hope this helps!!!
Answer: endothermic
Explanation: Endothermic Reactions. A system of reactants that absorbs heat from the surroundings in an endothermic reaction has a positive (H), because the enthalpy of the products is higher than the enthalpy of the reactants of the system.