A ship is sailing in a straight line from its home port.
The distance-time graph shows
4 hours of the journey.
Work out the speed of the ship in
these 4 hours.
Your final line must say,
Speed = ... mph
80
Distance
from home 60-
port (miles)
40
+
20
0
0
1
4
2 3
Time (hours)
Total marks: 3

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.