Describe a characteristic of a fissionable substance that is essential for a chain-reaction to sustain itself.

What is the molarity of a solution prepared by dissolving 10.0g of kno3 in 250 ml of solution

Who discovered infrared light

How many moles of AgCl2 are in 5.78x1024 molecules of AgCl2? a) 3.48x1048 moles AgCl2 b) 1375.87 moles AgCl2 c) 0.07 moles AgCl2 d) 9.60 moles AgCl2

What waves need mediums to travel

23 Which term is defined as the difference between the potential energy of the products and the potential energy of the reactants in a chemical reaction? (1) activation energy (3) heat of fusion (2) thermal energy (4) heat of reaction

The mineral vanadinite has the formula pb5 (vo4) 3cl. what mass percent of chlorine does it contain?

What is the energy of a photon of green light with a frequency of 5.76 times 10 to the fourteenth s to the negative one

Which statement describes a physical change? a. A carton of milk souring b. A piece of silver flatware tarnishing c. Dry ice subliming into carbon dioxide d. Two clear solutions forming a precipitate when mixed

What are two types of local winds?

For a given reaction, adding a catalyst increases the rate of the reaction by (1) providing an alternate reaction pathway that has a higher activation energy (2) providing an alternate reaction pathway that has a lower activation energy (3) using