What was a shortcoming of Democritus's description of the atom?

Which of these elements has the largest atom? * phosphorous magnesium calcium beryllium

A student walks 2 km in 30 min what is the students average In km/h

Electrons typically occupy their lowest energy level in a quantized system. Electrons will only move out of this level if they acquire additional energy.

The temperature of nitrogen is unknown when the gas occupies 100.0 mL at 99.10 kPa. If the gas is known to occupy 74.2 mL at 133.7 kPa and 305 K, determine the unknown temperature.

Does a gas phase have heterogenous properties?

The currents of the Earth's oceans are caused by A. marine organisms and volcanic eruptions. B. disturbances by submarines and large ships. C. waves and earthquakes along tectonic plate boundaries. D.

You are on an alien planet where the names for substances and the units of measures are very unfamiliar. Nonetheless, you obtain 19 quibs of substance called skvarnick.

How do you know if an element is an ion?

Which gas is not a greenhouse gas, A methane, B Water Vapor, C, Carbon dioxide, D, Nitrogen, E, Ozone

A very small equilibrium constant means ... a. an equal amount of reactants and products c. more products b. more reactants d. system isn't at equilibrium