A 0.23 g sample of an unknown di-protic acid is dissolved in water and titrated with 0.200 M NaOH. The titration is complete after 20.07 mL of base are added. The
equivalent mass of the acid is
56 g/mol
40 g/mol
21 g/mol
110 g/mol

What’s a special glass that most beakers are made of

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.

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?