Lime, Ca(OH)2, can be used to neutralize an acid spill. A 5.06 g sample of Ca(OH)2 reacts with an excess of hydrochloric acid; 6.74 g of calcium chloride is collected. What is the percent yield of this experiment? Ca(OH)2 + 2HCl -> CaCl2 + 2H2O

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

What type of electromagnetic radiation has a shorter wavelength than blue light

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?