the minimum frequency of radiation that will produce a photoelectric effect
<h2>#CarryOnLearning</h2>
The balanced equation would be
3H2 + N2 ———> 2NH3
Answer:aluminum
Explanation:aluminum is a precious metal which means that it can be changed into a liquid solid or gas
The molar mass of BF3 is 67.81 g/mol
<em><u> Explanation</u></em>
- Molar mass is the mass of all atoms in a molecule in gram per mole.
- molar mass of a molecule is calculated by adding atomic mass of constituent atom
- use the periodic table to determine the atomic mass of each element in the molecule.
that is;
atomic mass of B = 10.81 g/mol
atomic mass of F = 19 g/mol
- since there 3 atoms of F in BF3 the atomic massof F in BF3= 3 x19 = 57 g/mol
- total molar mass of BF3 = 10.81 g/mol + 57 g/mol = 67.81 g/mol
