Answer:
F = -5.91 E-10 N
Explanation:
The force of attraction between the ions Ca²⁺ and O²⁻ is given by the Coulomb's Law:
<em>where K: is the Coulomb's constant, q₁ and q₂: are the charges of the electrons (e = 1.602E-19 C) of the ions, and r: is the distance between the charges. </em>
<u>With q₁ = charge of Ca = (2+)(1.602E-19 C), q₂ = charge of O = (2-)(1.602E-19 C), K= 9E09 N.m².C⁻² and r = 1.25nm = 1.25 E-09 m, the force of attraction between the ions is:</u>
Therefore, the force of attraction between a Ca²⁺ ion and O²⁻ ion is -5.91 E-10 N.
I hope it helps you!
Answer: It is important to conduct multiple trials so one can get the best results, additionally, multiple trials with result in minimal errors. Finally it is important to conduct multiple trials because it will show you the actual answer/solution/whatever. If you do something once their may of been a random unknown affect and you would of never knew because you only conducted the experiement once.
Explanation:
Explanation:
Sometimes it is necessary to put forth new theories to explain experimental results, Explanation:
Creativity is important to science because sometimes, it is necessary to put forth new theories to explain experimental results. Theories are explanation of scientific observations.
Answer:
Option D is correct
Explanation:
The individual mass of reactants in the reaction are
Calcium Oxide (CaO) = amu
Carbon dioxide (CO2) amu
Since this reaction is a simple addition reaction in which no mass of the reactants is wasted. Also, no energy is released accompanied by conversion of mass into energy.
Hence, total mass of reactants would be equal to the mass of the product.
Thus, mass of calcium carbonate i.e CaCO3 is
amu
Hence, option D is correct
False. It is not fractional distillation.