Molality is defined as the number of moles of solute dissolved in 1 kg of solvent.
To calculate molality, we need to calculate the number of moles of CaCl₂.
Mass of CaCl₂ - 5.0 g
Molar mass of CaCl₂ - 111 g/mol
The number of moles of CaCl₂ - 5.0 g / 111 g/mol = 0.045 mol
we need to then calculate the number of moles in 1 kg solvent.
number of CaCl₂ moles in 500 g water - 0.045 mol
Therefore number of moles in 1 kg water - 0.045 mol / 500g x 1000 g = 0.090 mol
Molality of CaCl₂ - 0.090 mol/kg
Hola!
La densidad es una magnitud
intensiva, es decir, no depende de la cantidad de material. La densidad se define como la
relación entre la masa y el volumen de un cierto material y comúnmente se expresa en
g/mL. A partir de esta definición podemos concluir que para hallar la densidad de un material es necesario conocer su masa y su volumen para posteriormente aplicar la ecuación tal como se describe a continuación:

Entonces, la opción correcta es la
C. 200 g/mLSaludos!
The charge of a nucleus is neutral, meaning it’s zero
the positive charges of an atom equal the negative charges so the atom has a neutral charge
276mph that is easy because you times 11.5 with 24 which is the total number of hours per day
Answer:
true
Explanation:
True - Mass is a measure of an object's inertia. Objects with greater mass have a greater inertia; objects with less mass have less inertia.