Megan's task was to see if she could inflate a balloon using chemicals. Megan knew that baking soda and vinegar would fizz and produce a gas. However, her teacher didn't give her any vinegar to use, only diluted hydrochloric acid (HCI). Megan thought she could use the HCI in place of the vinegar. Megan put on her safety gloves and got to work. She put HCI in an Erlenmeyer flask and baking soda in a balloon. She stretched the opening of the balloon over the top of the flask and held the balloon to the side so the baking soda didn't spill out. She the lifted the balloon and the two chemicals mixed as the baking soda fell in to the flask. The balloon inflated. Questions:A. What is the hypothesis for Megan's experiment? (Use proper format)B.What was the independent variable in Megan's experiment?C.What was the dependent variable in Megan's experiment?D. Name at least 2 safety rules Megan broke.
Yes. That's what I did when my wired-in detector quit. I put marrettes over the wire ends. Mind you, some building codes call for wired in detectors so without knowing where you are, no one can say if you must, legally, have a wired-in one.
Generally would a trench be filled in when the cable is layed? As opposed to the tunnel which would still have open area where a fire could spread.
