The answer is A. molality
A molality is a property of a solution that can be described as the number of moles of a solute divided by the kilograms of solvent
A molarity is a property of a solution that can be described as the number of moles of a solute divided by the <span>litres of the solution.
Mass percent is a </span>property of a solution that can be described as the grams of a solute divided by the grams of the solution and multiplied by 100 (because it is percentage)
Mole fraction is a property of a solution that can be described as the moles of the component divided by total moles of the solution.
Answer:
C.
Explanation:
You have to just know this. Their is really no other explanation.
- Hope that helps! Please let me know if you need further explanation.
Answer:
32 grams
Explanation:
To find the molar mass of oxygen gas, you need to take a look at it's molecular formula. Oxygen is O2, and since each oxygen molecule has a molar mass of 16, 2 of them together have a molar mass of 32 grams. Hope this helps!
The radiation emitted is a beta particle with a -1 charge. Beta particles have a <span>medium penetrating power. An emission of beta particles requires shielding because of the hazards it pose to humans. Thus, one characteristic of this radiation is that <span>some shielding is required.</span></span>
Sodium Chloride is ordinary table salt
You have a small sodium atom with a positive charge Na+, and a larger chlorine atom with a negative charge, making it a Chloride ion, Cl-.
This ion formation has resulted from Na transferring one of its electrons to Cl. there opposite charges then attract them to each-other.
Because the electrons are transferred rather than shared, we know that the bond is Ionic, rather than covalent.
Most ionic compounds, if not all, are salts that form a crystal lattice structure, due to the opposite charges in the molecule.
Think of it like this
Na+—Cl-
Cl—-Na+
Na+—Cl-
That’s how the molecules attract and stick to each other. That would continue until you ran out of NaCl molecules.
