Determine the morality of the solution containing 2.4 m o l of kl in 140 ml total volume of solution

If the mass of the products measured 120g what would the mass of the reactants a. 30g b. 60g c. 120g d. 240g

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?