B.) Helium have <span>two protons and two electrons
Hope this helps!</span>
The correct answer would be B nuclear fission because an atom is splitting into two large fragments of comparable mass
Answer:
The lowest one cuz its low and the highest is like 100 or sumthin
Explanation:
I used my 5head
H........................................
Answer:
0.156mol
Explanation:
Number of moles of a substance can be calculated from its mass by dividing its mass by molar mass i.e.
Number of moles (n) = mass/molar mass
Molar mass of PbCl4 is as follows, where Pb = 207.2g/mol, Cl = 35.5g/lol
PbCl4 = 207.2 + 35.5(4)
= 207.2 + 142
= 349.2g/mol
Using: mole = mass/molar mass
mole = 54.32 grams ÷ 349.2g/mol
mole = 0.1555
mole = 0.156mol
