I really need this fast. Please help if you can Mix 85.0 cm3 of calcium hydroxide solution having a concentration of 0.19 mol/dm3 with 60.0 cm3 of hydrochloric acid having a concentration of 0.210 mol/dm3. Which ph value gets the solution

Which of the following best explains why the end of a spoon sticking out of a cup of hot water also gets hot? question 7 options: the heat from the hot water is conducted through the spoon handle the hot water heats the air surrounding the upper part of the spoon. the hot water causes a physical change in the spoon handle. the hot water causes a chemical reaction to take place in the spoon.

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

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?