Question: What was the liquid in the big containers that Harley Quinn and Joker jumped in?
Answer: The same unknown acid/chemical combination that created the Joker in the first place.
Question: Can someone be shot through the side and just duct tape the entry and exit holes? (Wouldn't the bullet have mushroomed in the body and not exited anyway?) If there were a real gunshot wound like that, how long until he bleeds out?
Answer: Duct taping the wounds may seal the injury and hold the bleeding, but it may not be effective. If something along the lines of this would happen in real life, it would be best to tend to the wounds properly in case of infection. Whether or not the bullet would get stuck inside the body depends on if whether or not the bullet hits something, that would cause it to get stuck inside the body. How long until someone would bleed out in real life depends on the severity of the gunshot wound and whether or not something major was hit.
Question: Why are the officers wearing dress blues in the beginning of the movie? The replacement commander of the 110th has a chest full of ribbons...The black military police officer at the command center. Everyday military officers would be wearing Class A's or fatigues.
Answer: Although it's technically a mistake, it is common in films to show military officers in dress uniforms with medals and ribbons to show that particular soldiers are important. A layperson may not know military uniform protocols but they can certainly tell that dress uniforms with a lot of medals signifies high rank at a glance.
Question: When President Asher takes the phone call regarding Prime Minister Wilson's death, who would be the one authorized to call him to let him know? Would it be the new Prime Minister or someone else in the British government?
Answer: Once she saw the gun and knew how crazy the game was, she formed an idea that someone's would get shot and believed that it would be her.