Oxidation/reduction (redox) reactions like this: 2H2 (g) + O2 (g) ⇒ 2H2O (l) will occur spontaneously. To make the reaction proceed in the reverse direction, you must put energy (electricity) into reaction. This is called

What characteristic must be true of a good hypothesis

Rank the following solutes in order of increasing entropy when 0.0100 moles of each dissolve in 1.00 liter of water. (a) NaBr (b) Cr (NO3) 3 (c) CaCl2 (d) C6H12O6

Calculate the standard enthalpy change for the following reaction at 25 degrees Celsius. MgCl2 + H2O--> MgO + 2HCl

The reaction below demonstrates which characteristic of a base? the ability of bases to release sodium ions into solution the ability of bases to release hydrogen ions into solution the ability of a base to react with carbonate or bicarbonate the

True or false Not all volcanoes form along plate boundaries

Show that the speed of an electron in the nth bohr orbit of hydrogen is αc/n, where α is the fine structure constant. what would be the speed in a hydrogen-like atom with a nuclear charge of ze?

Most modern forms of transportation are powered by fossil fuels. Carbon dioxide, methane, carbon monoxide, and other gases are released into the atmosphere during the production and combustion of these fuels.

Does the reaction of a burning candle give off or absorb heat

1. Describe the difference between valence and core electrons.

How are deltas and rivers similar?