Wendy has been going to the gym more lately, and she tends to be very sore the next day. She is pleased with the results she is seeing and is taking small steps so that she does not injure herself. What is the BEST way to eliminate the soreness? A.
Stop working out until it goes away.
B.
Change the kind of exercise she is doing.
C.
Spend more time stretching after her workout.
D.
Ramp up her exercise so that she does not have time to be sore.

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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.