9. A piece of titanium at 87.6°C is dropped into 53.1 g of water at 23.2°C. The final temperature of the mixture is
31.0°C. What is the mass of the titanium?

Apiece of copper has a temperature of 75.6 0c. when the metal is placed in 100.0 grams of water at 19.1 0c, the temperature rises by 5.5 0c. what is the mass of the metal?

How many moles of oxygen react with 12 moles of aluminum

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.