Velocity = change in displacement/ change over time
V = 27/ 2 = 13.5m/s
The number of moles of a substance can be used to calculate its mass, the number of atoms present in the compound as well as the number of moles of individual atoms/ions in the compound.
The number of moles of a compound or ion is defined as the ratio of its mass to its molar mass. The number of moles of a substance is very important when performing stoichiometric calculations.
If you have the number of moles of a substance you can find;
- The mass of the substance
- The number of atoms or ions in the substance
- The number of moles of individual atoms/ ions in the substance.
Learn more: brainly.com/question/865531
Answer: 1
Explanation: This is true.
It is called the nitrogen cycle- nitrogen gas gets transformed into nitrates through nitrogen fixation.
NA = 6.022*10^23
number of atoms = number of moles * avogadros number
number of atoms = <span>6.022*10^23 * 1.4 moles * 4 atoms / molecules of PCl3
Number of atoms = 3.37*10^23 atoms.</span>
