Mindy wants to find out the average distance that each of her six friends can throw a ball. She asks six friends of similar sizes and ages to throw a ball as far as possible from the same starting point. Mindy notices that one friend throws the ball much farther than the other five do. She wants her results to be accurate. What should Mindy do? 1. Repeat the experiment for the person with the unusual result.

2. Repeat the experiment using a different friend as a replacement.

3. Repeat the experiment and ignore the results of the first experiment.

4. Repeat the experiment two more times and find averages for each of the six throwers.

Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.