Answer:
Explanation:
hello,
the combined gas law equation is given as;
This combined gas law is gotten from the combination of Charles' law, Boyle's law and the Pressure law.
At constant pressure(this means the pressure is unchanged or fixed and this means the pressure is eliminated), we have:
At constant volume(we eliminate the volume since it is fixed or unchanged), we have;
At constant temperature (we also eliminate temperature), we have
.
thus from the options provided in the question the right answer will be
Answer:
4 Chlorine atons
Explanation:
4 molecules of NaCl
In NaCl we have only 1 atom of Cl
Therefore in 4 molecules, we have 4 atoms of Cl.
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Answer:
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior.
Explanation:
All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.
Magnesium, because it is responsible for more than 300 biochemical reactions and because it’s a solid.
Answer;
c.electrons move from the wool to the rod.
Explanation;
-Atoms are generally neutral (have the same number
of protons as electrons). Substances lose electrons to become
positively charged, while other substances gain electrons to become negatively charged.
-When a plastic rod is rubbed with woolen
cloth or wool, a transfer of electrons occurs (from the wool to the rod). The rod gains electrons; thus, it
is negatively charged.
