What is the mass of a sample of NH3 containing 7.20 x 10^24 molecules of NH3? 161 grams

187 grams

203 grams

214 grams

Clouds form when water vapor to form small droplets. a. humidifies b. condenses c. evaporates d. precipitates

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.

Many ionic compounds and a few highly polar covalent compounds are because they completely ionize in water to create a solution filled with charged ions that can conduct an electric current.