Gx mol/g x atoms/mol=

what are the units remaining after conversion

The "unit" remaining after conversion is atoms.

This is a way to calculate the number of atoms, in an specific mass.

Explanation:

When you have a mass, multiplying the molar mass, "grams" are cancelled, so you finally obtained, number of moles.

Moles . atoms/mol, cancel the word mol so you will find out a number of atoms, present at the mass from, the begining.

For example, how many atoms are in 10 g of NaCl

Molar mass NaCl = Na mass + Cl mass

23 + 35.45 = 58.45 g/m

10 g . 1 / 58.45 mol/g  . NA/ 1 mol = 3.42x10²⁰ atoms

NA = Avogadro number

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.