Chemistry, 09.04.2021 01:00 ellycleland16
The following data was collected in a laboratory experiment: Pressure = 780 mmHg, Volume = 150 mL, Temperature = 43˚C, Mass of gas collected = 0.55 g (a) Use the ideal gas law to determine the moles of gas used in this experiment (b) Based on this experimental data, determine the molar mass of this unknown gas. SHOW OR ATTACH WORK
Answers: 3
Chemistry, 22.06.2019 18:30, robjaykay
The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of
Answers: 2
Chemistry, 23.06.2019 16:50, alexisbaronetp85kek
How can a scientist assess whether a pure niobium (nb) sample is responsible for contaminating the lab with radioactivity? test the niobium sample to see whether it now contains other elements. test the niobium sample for the presence of niobium oxide compounds. heat the niobium, and see if the level of radioactivity in the lab increases. place the niobium under pressure, and see if the level of radioactivity in the lab increases.
Answers: 3
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