Tough question, I would suggest using Google maybe, or just plain out asking your science teacher.
Powdered coke prevent the heat loss. As a result, it prevents burning of carbon electrodes.
what do u need help with u pls respond quickly
<span>J.j thomson a british physicist was the first to identify the electron in 1987</span>
Answer:
M = 20.5 g/mol
Explanation:
Given data:
Volume of gas = 1.20 L
Mass of gas = 1.10 g
Temperature and pressure = standard
Solution:
First of all we will calculate the density.
Formula:
d = mass/ volume
d = 1.10 g/ 1.20 L
d = 0.92 g/L
Now we will calculate the molar mass.
d = PM/RT
0.92 g/L = 1 atm × M / 0.0821 atm.L/mol.K ×273.15 K
M = 0.92 g/L × 0.0821 atm.L/mol.K ×273.15 K / 1 atm
M = 20.5 g/mol
