Answer is 38/3 or 12.67
3x=38
x=38/3
therefore answer is the one mentioned above
Answer:
Exploding
Explanation:
(hope it helps you)
Edit: sorry Im pretty sure its vibrating and because they vibrate which is why it has kinetic energy
Molar mass= <span>342.15 g/mol</span>
First step: calculate the number of moles of sodium reacted
moles=mass/molar mass
31.5g/23g/mol =1.37moles
from the reaction above the reacting ratio of Na to H2 is 2:1 therefore moles of H2 is 1.37/2=0.685
At STP 1 mole = 22.4L what about 0.685 moles
22.4 x0.685=15.344L
