Answer:
d)Lithium sulfite, Li2SO3
Explanation:
LITHIUM is an element in the group 1 (alkali metals) of the periodic table, with a charge of +1. On the other hand, SULFITE is a radical with the chemical formula (SO3²-). It is made up of sulfur and oxygen atoms.
According to this question, lithium element and sulfite radical combines to form a compound called LITHIUM SULFITE. From the chemical formula of these individual constituents, the chemical formula of the compound formed will go this: Li2SO3. This means that it takes 2 atoms of Li+ to combine with SO3²- in order to form a neutral compound.
True I believe because when the current circuit is at its limit it will be damaged
Answer:
Well, he needs to take one more electron to have a stable structure. And by doing that the atom will have more electrons than protons and will turn into a negative ion.
Answer:
2Rb(s) + Sr^+(aq) → 2Rb^+ (aq) + Sr(s)
Explanation:
Rubidium has a more negative reduction potential (-2.98 V) compared to strontium (-2.89 V).
Hence, in a redox reaction involving rubidium and strontium, rubidium will be oxidized while strontium is reduced.
The balanced redox reaction equation is obtained from;
Oxidation half equation;
2Rb(s) ---->2Rb^+(aq) + 2e
Reduction half equation;
Sr^2+(aq) + 2e ----> Sr(s)
Overall reaction equation;
2Rb(s) + Sr^+(aq) → 2Rb^+ (aq) + Sr(s)
Answer: Event 1 is an example of a physical change and Event 2 is an example of a chemical change.
Explanation: Physical change is one in which there is no change in chemical composition of the substance. There is only a change in phase change.
Chemical change is a change in which there is a change in chemical composition and there might or might not be a phase change.
On Boiling, the water molecules remain bonded in the same form and only covert from liquid to gaseous form, thus is a physical change.
On Rusting of iron nail, the iron changes to iron oxide by combining with oxygen, there is a rearrangement of atoms and thus is a chemical change.
