Answer:
The molar mass for the solute is 180.8 g/mol
Explanation:
We apply the colligative property of freezing point depression.
The formula is T° freezing pure solvent - T° freezing solution = Kf . m
T° freezing pure solvent - T° freezing solution → ΔT
Kf = 1.86 °C/m
m is molality. We must determine with data given.
Molality are the moles of solute contained in 1 kg of solvent
0° - (-1.8°C) = 1.86 °C/m . m
1.8°C / 1.86 m/°C = m → 0.968 mol/kg
We multiply the molality by kg of solute, to determine the moles
100 g . 1kg/1000 g = 0.1kg → 0.968 mol/kg . 0.1 kg = 0.0968 moles
To find the molar mass we make g/ mol → 17.5 g / 0.0968 mol =
180.8 g/mol
Answer:
False
Explanation:
Metals are materials that exist in the form of solid (state of matter). It is not true that solid solutions are only formed with metals. A solid solution is a <u>solid-state solution of one or more solutes in a solvent. </u>The solid solution can be formed with different forms. In general, solid solutions <u>formed by mixing a foreign elements Y (solute) with a perfect crystalline element X (solvent) </u>and atoms of both X and Y share the various crystal sites.
8/5lit.. of 12M NaOH
2/5lit.. of 2M NaOH