Why do Nuclei need neutrons to be stable?

What happens when light strikes an opaque object?

Explain density in 3 sentences

Consider the equation for the formation of water. 2H2 + O2 - --> 2H2O What is the theoretical yield of H2O if 130 g of H2O is produced from 18 g of H2 and an excess of O2?

Sodium thiosulfate, na2s2o3, is used as a "fixer" in black and white photography. identify the reducing agent in the reaction of thiosulfate with iodine. 2s2o32 - (aq) + i2 (aq) → s4o62 - (aq) + 2i - (aq)

Write a balanced chemical equation for the following neutralization reaction producing a soluble salt: Carbonic acid, H2CO3H2CO3, neutralizes a sodium hydroxide solution. Assume both equivalents of hydrogen ions in the acid react.

A student mixes 0.50 L of 0.0020 M Ba (NO3) 2 solution with 0.50 L of 0.0080 M Na2SO4 solution. Which equation shows the proper set-up to calculate molar concentration of Ba2 + ions in the new solution? (0.0020 M) (1 L) = (? M) (0.0020 M) (0.

What is the minimum number of carbon atoms a ketone may contain

The gas-phase decomposition of NOBr has a k = 0.810 M-1 s-1 at 10°C. NOBr (g) → NO (g) + ½ Br2 (g) rate = k[NOBr]2 We start with 0.00200 M NOBr in a flask at 10°C. (a) How many minutes does it take to use up 0.

What new scientific evidence led to changes in Dalton's atomic theory?

What other property do metal share