Answer to Question #62238 in Chemistry for Blessed

Question

13 What is the boiling point of ethanol at 720 mm Hg when its normal point at 760 mm Hg is known to be 78.3 o C
a) 75.3oC
b) 76.3oC
c) −3oC
d) −2oC

17 What is the effect of a small amount of impurity on the melting point of an organic compound?
a) Decreases melting point
d) Elevates melting point
d) Stagnates melting point
c) None of the above

18 You are given a bottle that contains 4.59 cm3 of a metallic solid. The total mass of the bottle is 35.66 g. The empty bottle weighs 14.23 g, what is the density of the solid?
a) 4.67 g/cm3
b) 8.94 g/cm3
c) 3.1 g/cm3
d) None of the above

Answer 1

13. b) 76.3oC
17. a) Decreases melting point
18. a) 4.67 g/cm3