Answer:
0.2mol/kg
Explanation:
molality is the concentration of a solution in moles of solute per kilogram of solvent
moles of solute (NaOH) = 2moles
mass of solvent in kg. =10kg
Therefore molality. = 2moles/10 kg
=0.2mol/kg
Answer:
78.12 L
Explanation:
Given that,
Initial volume, V₁ = 105 L
Initial temperature, T₁ = 20°C = 20+273 = 293 K
New temperature, T₂ = -55 °C = 218 K
We need to find the new volume of the balloon. The relation between the volume and the temperature is given by :

Where
V₂ is the new volume

So, the new volume is 78.12 L.
The answer is _molecule_.
Hope this helps
Answer = 13 m/s^2
Formula: a= f/m
Acceleration = force/ mass
Acceleration = 52N / 4kg
Acceleration = 13 m/s^2
I HOPE THIS HELPED :)
Answer:
<h3>The answer is 43.48 g/cm³</h3>
Explanation:
The density of a substance can be found by using the formula

From the question
mass = 500 g
volume = 11.5 cm³
We have

We have the final answer as
<h3>43.48 g/cm³</h3>
Hope this helps you