<span>Thermal energy is often referred to as heat energy.</span>
Answer:
d. 380g
Explanation:
The reaction of production of hydrogen from zinc and HCl is:
Zn + 2HCl → ZnCl₂ + H₂(g)
At STP (1atm of pressure and 273.15K), 112L are:
n = PV /RT
n = 1atm×112L / 0.082atmL/molK×273.15K
<em>n = 5.00 moles </em>
That means you need to produce 5.00 moles of hydrogen. Based on the reaction, 1 mole of Zn produce 1 mole of H₂(g), as yield of reaction is 85%:
5.00 moles H₂(g) ≡ 5.00 moles of Zn / 85% = <em>5.88 moles of Zn you need</em>
As molar mass of Zn is 65.38 g/mol:
5.88 moles Zn × (65.38g /mol) = 384 g of Zn ≡ <em>d. 380g</em>
<em></em>
I hope it helps!
I may be totally wrong but I’ll make a guess to it being thermodynamics.
Answer:
A stir bar consists of a magnetic bar used to agitate a liquid mixture or solution
Explanation:
