1. A calorimeter contains 678.0 g of water at 19.78 °C. A 20.20 g sample of an unknown metal is heated to 176.2 °C and placed into the
water in the calorimeter. Heat flows from the metal to the water
until both reach a final temperature of 29.32°C. What is the specific
heat of the metal?

How has the scientific community addressed the safety of chemicals? a. chemicals are repeatedly tested, even those that have existed for a long time. b. existing chemicals are tested if they have never been tested before. c. chemicals are tested if they are suspected to have caused a problem. d. only new chemicals are tested.

Calculate the percent composition by mass of each element in al(oh)3. use at least three significant figures.

What if it is did darwin used to support his theory of evolution