Copper sulfide is found written as both CuS and Cu2S. Why are there two forms for writing this chemical formula? SELECT AN ANSWER

This is an example of a combination reaction: CuS is the halfway stage, before the second copped atom joins the molecule.

Copper is a transition metal with two possible ionic states (copper I, or 1+, and copper II, or 2+).

This is a synthesis reaction and so the formula will continue changing until all the atoms have conglomerated.

One of the versions is a mistake, the correct form should be Cu2S.

Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256

Chinese privet is a plant that is native to china. over 150 years ago, chinese privet was introduced to the united states as a fast-growing shrub that serves as an excellent privacy hedge. with no natural herbivore, chinese privet quickly established itself and spread in natural areas throughout the southeast and eastern seaboard of the united states. its dominance in these areas has jeopardized the survival of native plant species. chinese privet provides evidence that introducing non-native organisms can cause environmental damage integrated pest management strategies will not decrease chinese privet populations american gardeners can easily control the spread of chinese privet non-native plant species have type i survivorship curves

Select the word from the list that best fits the definition a system made of 25 satellites