16.State side angle side (SAS) criteria for congruence of two triangles.
Answers
Answer:
0.2 moles of solute (urea) =0.2 X molar mass of urea = 0.2 X 60=12 grams
0.8 moles of solvent (water) = 0.8 X molar mass of water = 0.8 X 18= 14.4 grams.
Mass of solution = Mass of solute + Mass of solvent
=12 + 14.4
26.4 grams
Volume =mass/density
=26.4/d mL =26.4/1000 dL
Molarity =0.1/26.4/1000 d
1/10 X 1000d/26.4
Molarity =100d/26.4
If density=0.21gm/mL putting this value in the above equation we get.
Molarity=100X0.21/26.4=0.79 M
if d=0.21 gm/mL Its volume=26.4/1000 X0.21
volume=0.12 L =0.12 X1000= 120 ml
Percentage of solution= mass/volume of solution
=26.4/120
=0.22%
Answer:
Side-Angle-Side (SAS) Rule
The SAS rule states that: Iftwo sides and the includedangle of one triangle are equal to two sides and included angle of another triangle, then the triangles arecongruent. An included angle is an angleformed by two given sides.