100.4 degree celsius is the temperature of the water having non-electrolyte.
The correct answer is b.
Explanation:
Data given:
mass of non-electrolyte solute = 31.65 grams
volume of water = 220 ml or 0.22 litres
molar mass of solute = 180.18 grams/mole
density of water = 1 gm/mole
Boiling point of water = 100 degrees celsius
molality = ?
Kb for water = 0.51
boiling point elevation or temperature of hot water,T =?
Formula used:
T = mKb equation 1
number of moles of non electrolyte = ![\frac{31.65}{180.18}](https://tex.z-dn.net/?f=%5Cfrac%7B31.65%7D%7B180.18%7D)
number of moles = 0.17 moles
molality = ![\frac{0.17}{0.22}](https://tex.z-dn.net/?f=%5Cfrac%7B0.17%7D%7B0.22%7D)
molality = 0.77 M
putting the values in equation 1
T = 0.77 X 0.51
T = 0.392 degree celsius. is the elevation in temperature when solute is added.
Temperature of the hot water = 100 +0.392
= 100.392 degree celsius.
<span>To calculate the ideal mechanical advantage for an inclined plane, divide the length of the incline by the height of the incline. </span>
Answer:
Friction is "a force which opposes relative motion" while kinetic energy is the "energy an object has associated with its motion." Frictional work will reduce an object's kinetic energy if it opposes the current speed
Explanation:
Answer:
Covalent bond.
Explanation:
It involves sharing electrons equally between both molecules.