Answer:
Halogens always form anions, alkali metals and alkaline earth metals always form cations
Explanation:
Answer:
True
Explanation:
Any substance dissolving a solid (salt) in liquid (water) is a physical change.
Salt in water, is a physical change because only the state of the matter has changed.
Answer:
Yes
Explanation:
: The corrosion of iron indicates a chemical change in the metal. ... Where salt is present, electrochemical corrosion occurs, and the protective oxide film does not form, thus the corrosion (buildup of rust) continues unchecked. Your iron nail will indeed rust more quickly and severely in salt water.
A shared derived character is a characteristic or trait that two lineages share.
For example, amphibians, turtles, lizards, snakes, crocodiles, birds and mammals all have, or historically had, four limbs. ... Four limbs is a shared derived character inherited from a common ancestor that helps set apart this particular clade of vertebrates.
Aluminum sulfide is Al₂S₃, which shows that there are 3
sulfur atoms per formula unit.
In one mole there is Avogadro’s number of atoms and Avogadro’s
number = 6.02 x 10²³
In 1.10 mole = 1.10 x 6.02x10²³ = 6.62 x 10²³ formula units
Now multiply with 3 to get number of sulfur atoms present in
1.10 mol of Aluminum sulfide;
3 x 6.62x10²³ = 1.99 x 10²⁴
So, the answer is 1.99 x 10²⁴ sulfur atoms.