Explain what changes occur in particle motion, temperature, and state of a pure substance when thermal energy is added or removed. When thermal energy is added

How many grams of sodium chloride are in 250ml of a 2.5m naci solution

How many moles are in 7.2 x 10^23 carbon molecules?

For the reaction i2(g)+br2(g)←−→2ibr(g), kc=280 at 150 ∘c. suppose that 0.450 mol ibr in a 2.00-l flask is allowed to reach equilibrium at 150 ∘c. what is the equilibrium concentration of 2ibr, i2, br2