An anion is an atom that has A. Gained one or more electrons.
Answer is: empirical formula of a compound is CaCl₂.
1) Calculate amount of substance for calcium
m(Ca) = 80 g.
n(Ca) = m(Ca) ÷ M(Ca).
n(Ca) = 80 g ÷ 40.078 g/mol.
n(Ca) = 1.996 mol.
2) Calculate amount of substance of chlorine
m(Cl) = 140 g.
n(Cl) = m(Cl) ÷ M(Cl).
n(Cl) = 140 g ÷35.45 g/mol.
n(Cl) = 3.94 mol.
3) n(Ca) : n(Cl) = 1.996 mol : 3.94 mol /1.996.
n(Ca) : n(Cl) = 1 : 2; one calcium atom and two chlorine atoms.
In general the atoms consist of 3 basic particles
In the nucleus there is protons (they have positive charge) and neutrons (they don’t have a charge).
And around them are electrons
Chemical reactions can be identified when there is a change in color, energy is produced, change in odor, or if new substance forms.
Answer:
The amount of work required to raise the TV from point A to point B is equal to the amount of gravitational potential energy the TV gains from its height above the ground. This is generally true for any object ...