Under normal conditions, the movement of electrons in metals is

a. random

b. directional

Which method for treating arthritis is an example of pseudoscience? diet drugs exercise magnets

How many grams of F are in 12.56 g of SF6? h.

Consider the equation: 4AI+30² → 2AI²O³ Is this equation balanced? Why or why not?

When a connector is marked with "al-cu," the connector is suitable for use with copper, copper-clad aluminum, and aluminum conductors?

If each jar below contains exactly one mole of each element, which jar contains the greatest mass? (The atomic mass of each element is given.) MolesAQ2 A. The jar of carbon. B. The jar of sulfur. C. The jar of aluminum. D.

Identify each enthalpy change by name and classify each change as exothermic or endothermic. 1. 1 mol NaCl (s) à 1 mol NaCl (l) 2. C4H10 O (l) à C4H10O (g) 3. H2O (g) à H2O (l) 4. 1 mol NaCl (s) + 3.

Calculate the number of atoms in a 1.26*103 g sample of silicon.

A region that has a large number of atoms whose magnetic fields are lined up parallel to a magnet's field is A. the magnetosphere. B. the magnetic declination. C. a magnetic domain. D. a ferromagnetic region.

Name the element that has atoms with the same electronic structure as sulfur ion

The mass of a 2.0 centimeter sample of a substance is 3.2 grams. Calculate the density of the substance