Molality is obtained by dividing the number of moles of solute by the mass in kilogram of the solvent. None of the dimensions is dependent in temperature. On the other hand, molarity is obtained by dividing the number of moles of solute by the volume in liters of the solution. Volume is temperature dependent.
In order to calculate average speed we will calculate the total distance in meters traveled by cindy.
Distance = 2 Km
1 km = 1000m
So distance in meters = 2000 m
Then let us calculate the total time taken by cindy to cover these 2000 meters
Total time in minutes = 2 + 4 + 1 + 3 = 10 minute
Average speed = total distance / total time
Average speed = 2000 m / 10 minutes
average speed = 200 m / min
In some cases the symbol comes from an abbreviation for the old latin name of the element. For example, Fe stands for iron (ferrum) and Cu for copper (cuprum). The first letter of the chemical symbol is always capitalized. If the symbol has two letters, the second letter is always lowercase.
This isn’t a answer i’m just trying to get points :)