Michael has a substance that he puts in container 1. the substance has a volume of 5 cubic meters. he then puts the substance in container 2, and it now has a volume of 10 cubic meters. in which phase(s) is the substance? solid or liquid liquid or gas liquid gas

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

The chemical composition of soil varies with depth. an article in communications in soil science and plant analysis describes chemical analyses of soil taken from a farm in western australia. fifty specimens were each taken at depths 50 and 250 cm. at a depth of 50 cm, the average no3 concentration (in mg/l) was 88.5 with a standard deviation of 49.4. at a depth of 250 cm, the average concentration was 110.6 with a standard deviation of 51.5. find a 95% confidence interval for the difference in no3 concentrations at the two depths.

When utilizing a transmission electron microscope, why is it necessary to stain the specimen with heavy metal salts?