Different samples of a pure compound always contain the same ...

[ishan]

Different samples of a pure compound always
  contain the same elements in
   a) exactly equal amounts.
   b) the same proportion by volume.
   c) the same proportion by mass.
   d) varying proportions depending on the temperature.

Question 2

A 2.0-kg object moving 3.0 m/s strikes a 1.0-kg object initially at rest. Immediately after the collision, the 2.0-kg object has a velocity of 1.5 m/s directed 30 from its initial direction of motion. What is the x component of the velocity of the 1.0-kg object just after the collision?
 a. 3.7 m/s
  b. 3.4 m/s
  c. 1.5 m/s
  d. 2.4 m/s
  e. 4.1 m/s

[miss_1456@hotmail.com]

Answer to Question 1

c

Answer to Question 2

b

[ishan]

TYSM

[scikid]

Gracias!