What is the best way to measure a reaction efficiency

Is a dependent variable a constant or a control

In what sense is the wave motion of a guitar string analogous to the motion of an electron in an atom?

Effect of using uranium (nuclear energy) on the environment:

A liquid A. has a fixed volume but takes the shape of its container B. has the volume and shape of its container C. has a fixed volume and shape

All of the following metals replace hydrogen of an acid except ... A. Sn B. Au C. Zn D. Al

Time (s) [NO2] (mol/L) 0 0.500 1,200 0.444 3,000 0.381 4,500 0.340 9,000 0.250 (Note: The rate law only depends on the concentration of NO2.) Consider the reaction NO2 (g) + CO (g) → NO (g) + CO2 (g).

Building a dam to produce hydro-electricity power is one way to take advantage of a common renewable resource. This produces much less pollution than a coal burning plant. However, building dams is not a perfect solution.

The goose has a mass of 22.6 lb (pounds) and is flying at 7.90 miles/h (miles per hour). What is the kinetic energy of the goose in joules?

How can I balance this chemical equations? Aluminum and hydrochloric acid react to form aluminum chloride and hydrogen gas.?

Convert 8.05 moles of magnesium carbonate to formula units.