Ahardware salesman measures the mass of a box containing 1000 washers. the mass is 1.3301 kg . what is the mass of a single washer in milligrams? write your answer as a decimal.

The mass of a washer is 1330.1 mg.

Mass = 1 washer × (1.3301 kg/1000 washers) = 0.001 3301 kg = 1.3301 g

= 1330.1 mg

let that person have a turn to speak : )

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.