If 0.500 mol of NaN3 react what mass I'm grams of nitrogen would result

When a substance is undergoing a phase change, turning from a solid to a liquid, or from a gas to a liquid, which two facts are true.

Which group on the periodic table is characterized as highly reactive elements containing only one valence electron? noble gases halogens alkaline earth metals alkali metals

Alice added sodium chloride to water and stirred the water for several minutes. Alice is most likely trying to demonstrate that ionic compounds are hard. can dissolve. are clear. can melt.

Problem page write a balanced half-reaction for the reduction of solid manganese dioxide mno2 to manganese ion mn 2 in acidic aqueous solution. be sure to add physical state symbols where appropriate.

Classify each of the following as an exothermic or endothermic reaction: 1) 2H2 (g) + O2 (g) ⟶Δ2H2O (g) + 483.6kJ 2) 6CO2 (g) + 6H2O (l) + 15000kJ⟶C6H12O6 (aq) + 6O2 (g) 3) 2Al (s) + Fe2O3 (s) ⟶Al2O3 (s) + 2Fe (s) + 850kJ

How long does it tae for bleach to evaprate?

What product (s) forms at the cathode in the electrolysis of an aqueous solution of k2so4?

What element is used as a shield to protect people from radioactive substances?

The frequency of a given region of the electromagnetic spectrum is more than 3 x 1019 HZ. Note that the speed of light is 2.998 x 108 m/s. Which waves are found in this region? A. gamma rays B. visible light C. microwaves D. radio waves E. x-rays

A farmer uses water to irrigate his potato crops. Which roles of water does this examplify