Answer:
5.77 g
Explanation:
Amount of calcium sulfide = 0.0800 mol
Molar mass of calcium sulfide = 72.1 g/mol
Mass of calcium sulfide = 0.0800 mol x 72.1 g/mol
= 5.77 g
A bond involves the swapping of electrons, transfer, etc, like a covalent or ionic bond.
An intermolecular interaction isn't necessarily a bond, but rather a charge that keeps atoms near each other. For example, a glass can swell at the top without overflowing or you can have a meniscus in your graduated cylinder because water sticks to the sides. These are intermolecular interactions, not bonds. An example are London Dispersion Forces. These are intermolecular interactions that control the melting and boiling temperatures of compounds.
Think, if molecules didn't interact with each other, what's holding them together? Why don't they just fly off? Because they interact with each other, we have the states of matter! We need so much heat to give them energy, just so that their own motion can break these forces and cause them to change state.
also i haven't taken chemistry so idk what im doing oops
Answer:
The answer is C: .588 M
Explanation:
[CaCl2] = mols CaCl2/Liters of solution
molar mass of CaCl2 = 110.98 g/ 1 mole (from periodic table)
800 mL/1000 mL = .8 Liters of solution
1)
52.3g CaCl2/ 110.98g = .47 mole
2)
.47 mole/.8 L = .589 M
So the answer is C
It means that it allows some things to pass through it but now all. (Liquids and gases)