Is tarnishing silver physical or chemical

A chunk of pure silver weighs 20.0 g. What is its volume? Silver has a density of 10.49 g/cm cubed. Use unit analysis, NOT the Density formula.

In order to study hydrogen halide decomposition, a researcher fills an evacuated 1.11 L flask with 0.822 mol of HI gas and allows the reaction to proceed at 428°C: 2HI (g) ⇋ H2 (g) + I2 (g) At equilibrium, the concentration of HI = 0.055 M.

View the topographic map of Antarctica. Use latitude and longitude to tell the location of the following sites to the nearest 5 degrees

How man Liters are there in 450 grams of NH3 gas at STP?

Which of these actions is an example of chemical weathering? A. Freezing water widens the cracks in rocks. B. Plant roots force their way into cracks in rocks and break them. C.

Explain whether nitrogen atoms will form bonds with other atoms.

A large sample of solid calcium sulfate is crushed into smaller pieces for testing. which two physical properties are the same for both the large sample and one of the smaller pieces?

How do i give the number of significant figures in 0.0037 mm

Which of these are ionic compounds?

Which property can be defined as the ability of a substance to be hammered into thin sheets