Answer:
Lewis was a person of law
Explanation:
A magnesium atom is a neutral atom where the number of protons and electrons are the same. A magnesium ion has a positve 2 charge since it will lose two of its electrons when it undergoes ionic bonding. Since it's the same element it will still have the same amount of 12 protons. For isotopes of magnesium, they will have differing amounts of neutrons and thus a difference in the mass number since neutrons have a mass of about 1
Explanation:
Atomic Number Element Symbol
Chlorine. Cl
Argon. Ar
Potassium. K
Calcium. Ca
Answer:
0.67 mole/litre
Explanation:
the molarity equall no. of moles ÷ volume of sol.
Answer:
Sound travels more quickly in solids.
Explanation:
That’s because it is the collisions of particles that transmit the energy of the sound waves.
In solids, the particles are packed as tightly as they can get. The energy of the collision passes from one particle to another quite rapidly. For example, the speed of sound in steel is about 6000 m/s (22 000 km/h).
The particles in liquids are further apart, so it takes longer for the sound energy to get from one particle to the next. The speed of sound in water is about 1500 m/s (5400 km/h).
The particles in a gas are relatively far apart, so it takes time for one particle to get to another. The speed of sound in air is about 340 m/s (1200 km/h).
