What is the density of mercury if 205 mL has a mass of 2790 g; round your answer to the nearest 0.1 g/mL

Describe solids, liquids, and gases

Is it possible for the overall charge of an ionic compound to be - 1. true false

Josh is studying pH calculations and tests a basic solution with a pH meter. He finds that the solution has a pH equal to 9.2. What is the pOH of the solution? A) 2.5 B) 4.8 C) 9.6 D) 10.2

Chlorine is used to disinfect swimming pools. The accepted concentration for this purpose is 1 ppm chlorine, or 1 g of chlorine per million grams of water.

The intensity of a sound is directly related to the amount of energy the sound wave possesses. This, in turn, is directly related to the loudness of the sound. So, a sound wave with a large intensity always has a large A. amplitude B. frequency C.

Why do two isotopes of an element have the same atomic number but different mass numbers?

In a water solution, HCl and NaOH react to form H2O and NaCl. Radium-226 undergoes alpha decay to form radon-222. The temperature of both of these reactions is increased.

Which of these statements is true about endothermic reactions, but not about exothermic reactions? The reactants and products are different substances. The reactants have less energy than the products. The temperature of the container increases.

Calculate H3O + when OH - is 2*10 - 8

An element and an atom are different but related because a) A particular element is made up of many different types of atoms b) A molecule is the same as an atom c) An element is made up of all the same type of atom d) An element is smaller than an