Silape
и. ролите
consider the histogram of mass change from an experiment.
-.03
+.09
+.11
-01 +.01 +.03 +.05 +.07
+.07
3. which of the following explanations best fits the data?
a. sugar was dissolved in water.
b. two solutions were mixed and formed a precipitate
c. a solid was strongly heated.
d. alka-seltzer was dissolved in water
consider the histogram of mass change from an experiment.
-.13

The pressure inside a hydrogen-filled container was 2.10 atm at 21 ? c. what would the pressure be if the container was heated to 92 ? c ?

What is the wavelength of a 3*10^12 hz infrared wave a 3*10^20m b 1* 10^4m c 3*10^-3m d 1*10^-4 m

One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(ii) carbonate, in concentrated sulfuric acid. the sulfuric acid reacts with the copper(ii) carbonate to produce a blue solution of copper(ii) sulfate. scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: (s) (aq) (s) (aq) suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. he adds powdered iron to a copper(ii) sulfate sample from the plant until no more copper will precipitate. he then washes, dries, and weighs the precipitate, and finds that it has a mass of .