Answer:1. 5
Explanation: the element is boron and the atomic number is 5
A rock with different rocks combined to make it
Like quartzite is made up of quartz but granite is made of quartz , feildspar and mica
Hope this helps
0.295 * 203 = 53.885
0.705 * 205 = 144.525
53.885 + 144.525 = 204.41
The relative atomic mass of Thallium is 204.41
Molar mass HNO₃ = 63.0 g/mol
number of moles = 3.94 / 63.0 => 0.0625 moles
Volume = moles / molarity
V = 0.0625 / 1.50
V = 0.04166 L x 1000 = 41.66 mL
hope this helps!
The mass of Hydrogen is 2 g/mol
The mass of Helium is 4 g/mol
