<span>Silver is usually alloyed with copper to increase the
hardness and strength of sterling silver. Pure silver is relatively soft and
prone to tarnishing so other metals like those that copper is used to reduce
tarnishing and act as a solute in sterling silver. Copper is usually soluble in
most solvents.</span>
Answer:
Paper
Explanation:
In chromatographic separation, two different phases are important; a stationary phase and a mobile phase.
The stationary phase is the phase that does not move. Substances are separated based on how fast or slowly they move in the stationary phase.
The mobile phase is usually the solvent(or mixture of solvents) that carries the solutes through the stationary phase.
The stationary phase is usually composed of a porous material. Paper is a porous material. The mobile phase is trapped between the cellulose fibers of the paper and separation is achieved.
Answer:you could forget to charge the wireless charger but I have one and there’s never a problem so you probably don’t have to worry
Explanation:
D = mass / volume
d = 100 g / 100 mL
d = 1.0 g/mL
