Answer:
The law of conservation of mass states that mass can neither be created nor destroyed in a chemical reaction. Thus, the amount of matter cannot change.
Explanation:
Ionic bond:
A bond resulting from the attraction between oppositely charged ions; one atom gives another electrons.
Covalent Bond:
A bond resulting from the shaing of pairs of electrons between two atoms.
(+1) + (-1) = 0
Hey there!
Usually what's taught in school is this.
Solid- Particles packed, little energy.
Liquid- Particles less packed, more energy.
Gas- High energy in particles, less particle restriction, very spread out.
But here's the extra thing,
Plasma- Examples are things like fire and lightning. Very, very, high energy.
Hopefully this helps!
Answer:
So combining blue with yellow light is like combining blue light with red and green light. The result of combining these three primary colors of light is to produce white light.
Explanation:
Answer:
0.97 × 10⁹ strontium atoms
Explanation:
if 1 pm is equal with 10⁻⁹ mm
then 215 pm are equal to X mm
X = (215 × 10⁻⁹) / 1 = 215 × 10⁻⁹ mm
Now the diameter of the strontium atom is twice the radius:
diameter = 215 × 10⁻⁹ × 2 = 430 × 10⁻⁹ mm
if 1 strontium atom have a diameter of 430 × 10⁻⁹ mm
then X strontium atom are needed to be laid said by side to span a distance of 419 mm
X = (419 × 1) / (430 × 10⁻⁹) mm = 0.97 × 10⁹ strontium atoms
