What is the mass of an airplane that is flying at 246 m/s and has a momentum of 1.968 x 10 kg-m/s? Show your work

There is an area in idaho named craters of the moon where most of the ground is covered with basalt, adark gray, igneous rock with no visibl crystals. what can you infer about the geographical history of the area?

0.2348 grams of pbcl2 used to form 44.0 ml of solution.

An observation that requires measurement is called quantitative observable or qualitative