The (w/w) % of aqueous solution of NaCl is 10. What is its (w/v) % ? (Density of solution is 2 g/mL)
(a) 20 (b) 50 (c) 30 (d) 80

According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at

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?

What is the solubility-product constant of barium sulfate, baso4, if a saturated solution is 1.03 ´ 10-5 m?