You are to convert 3.55 moles of
NaCl to formula units. Always remember that the
Avogadro’s number is 6.023*10^23 units per mole of a substance. Units could be
atoms, molecules or formula units. So, just multiply 3.55 moles
to <span>6.023*10^23 formula units per mole and you will get
2.138x10^24 formula units of NaCl.</span>
Explanation:
This is due to a reduction in atmospheric pressure – pressure due to the weight of the overlying air column). Remember that the higher the altitude the lower the air density and subsequently the lower the air pressure.
Therefore when heating water at higher altitude the vapor pressure of the water at the surface overpowers the atmospheric pressure – which is slightly lower than at sea level – even before the water temperatures reach 100 degrees centigrade.
Answer:
1 is the answer
Explanation:
The ionic formula for Lithium Oxide is Li2O . Lithium is an Alkali Metal in the first column of the periodic table. This means that lithium has 1 valence electron it readily gives away in order to seek the stability of the octet.
Water acts as solvent and it has no effect on the amount of the acid or the titrating agent.
<span>Also, the concentration of the titrating agent must be known exactly, the amount of solvent is less important (the more diluted it is, the more accurate is the titration).</span>