15. Mercury is a liquid at room temperature and has a density of 13.6 g/mL. A sample of an unknown solid substance whose volume is 450 cm is found to have a mass of 6.50 kg. Assuming it did not chemically react with or dissolve in
mercury, would it float in the mercury? Remember to change grams. Show your work!

Kate is 14 years old and just started taking dance classes with her friends at a local dance studio. this is her first time in a dance program, so everything is new to her. her friends convinced her to join the class since they have been enjoying it for a few months. how could the following terms her succeed in the dance class? ● secondary reinforcement ● identity vs. role confusion ● observational learning how could the following terms hinder her success in the class? ● circadian rhythm ● basal ganglia ● vestibular sense