If lye, NaOH (s), is put in water, the solution gets hot. What kind of energy process is this?

What the wavelength of a light whose frequency is 7.00 x 10^16 Hz

What mineral is not scratched by a fingernail, but is scratched by a copper penny?

N₂0₃ what is the oxidation number

What happens to the air particles in the bubble when you pull up on the plunger

Why do you need many different indicators to span the entire ph spectrum?

Which set of factors changes igneous or sedimentary rock into metamorphic rock? heat and weathering water and weathering heat and pressure water and pressure

What is the standard cell potential (E°cell) for the voltaic cell based on the reaction below? Sn2 + (aq) + 2Fe3 + (aq) → 2Fe2 + (aq) + Sn4 + (aq)

G oil of wintergreen, c8h8o3 is prepared when methanol, ch3oh, is reacted with salicylic acid, c7h6o3. what is the percent yield of a reaction in which 15.3 g of oil of wintergreen is collected after 16.

How can a neutral atom become a positively-charged particle?

Mineral oil can be used in place of mercury in manometers when small pressure changes are to be measured. What is the pressure of an oxygen sample in mm of mineral oil if its pressure is 28.5 mm Hg? (d of mineral oil = 0.88 g/mL; d of Hg = 13.