45:06 What most likely occurred during this demonstration? In a science demonstration, a teacher mixed zinc (Zn) with hydrogen c
hloride (HCI) in a flask and quickly attached a balloon over the mouth of the flask. Bubbles formed in the solution and the balloon inflated. O The Zn and HCl both retained their identity. O Either Zn or HCI, but not both, retained its identity. Evaporation of one of the substances occurred. O One or more new substances formed. Mark this and return Save and Exit Next Submit
<span>The only scenario that
will allow you to reach an equilibrium mixture involving these chemicals is to
place NH3 into a sealed vessel. This reaction requires pressures between 2100,
3600 psi, and temperatures between 300 and 550 degree Celsius. With this given
temperature and pressure, the ammonia naturally decomposes into nitrogen and
hydrogen gas at the same rate. When this happen, the concentrations of these
chemicals become constant and the system is said to be at equilibrium.</span>
