Answer:
0.768 kg
Explanation:
Step 1: Given data
- Mass of ammonium nitrate (solute): 27.8 g
- Molality of the solution (m): 0.452 m
Step 2: Calculate the moles corresponding to 27.8 g of ammonium nitrate
The molar mass of ammonium nitrate is 80.04 g/mol.
![27.8 g \times \frac{1mol}{80.04g} = 0.347mol](https://tex.z-dn.net/?f=27.8%20g%20%5Ctimes%20%5Cfrac%7B1mol%7D%7B80.04g%7D%20%3D%200.347mol)
Step 3: Calculate the mass of water
The molality is equal to the moles of solute divided by the kilograms of solvent (water).
![m= \frac{n(solute)}{m(solvent)} \\m(solvent) = \frac{n(solute)}{m} = \frac{0.347mol}{0.452mol/kg} = 0.768 kg](https://tex.z-dn.net/?f=m%3D%20%5Cfrac%7Bn%28solute%29%7D%7Bm%28solvent%29%7D%20%5C%5Cm%28solvent%29%20%3D%20%5Cfrac%7Bn%28solute%29%7D%7Bm%7D%20%3D%20%5Cfrac%7B0.347mol%7D%7B0.452mol%2Fkg%7D%20%3D%200.768%20kg)
Use the link above for the answer
Answer:
B) Either speed or direction can change
There are only two ways for you to accelerate: change your speed or change your direction—or change both. If you're not changing your speed and you're not changing your direction, then you simply cannot be accelerating—no matter how fast you're going.
Answer:
Kinetic energy increases
Explanation:
Kinetic energy is energy that kinda only happens when somethings like moving so if something is moving super fast its kinetic energy is increasing but if something is slowing down from fast to slow its kinetic energy is decreasing that make sense?
In chemistry, a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.