Answer:D
Explanation:
Menirals are obtained from the rocks..which contain elements in combined states,specialy metals.
These metals are then extracted and purfied by metallurgy
Determining on the temperature, ice could melt, water could freeze or evaporate. Just an example.
Answer: 77.47 g of will be produced from 100.0 g of Iron (III) hydroxide
Explanation:
To calculate the moles :
The balanced chemical equation is:
According to stoichiometry :
2 moles of produce = 1 mole of
Thus 0.935 moles of will producee= of
Mass of
Thus 77.47 g of will be produced from 100.0 g of Iron (III) hydroxide
Noble gases are very unreactive, so you're not going to see them anywhere that reactivity is important. In fact, one of the main places they're used is in environments where reactions need to be stopped - to replace air in a reaction environment, for example.
To make steel, batteries, and Xerox machines, you wouldn't want something unreactive. Fluorescent light bulbs ("neon bulbs"), on the other hand, fit the bill nicely.