What 2 particles account for almost all if the mass of an atom

What is one similarity among elements in a group? A. atomic mass B. chemical properties C. atomic weight D. practical uses

A nurse practitioner prepares an injection of promethazine, an antihistamine used to treat allergic rhinitis. If the stock bottle is labeled 25 mg/mL and the order is a dose of 11.0 mg, how many milliliters will the nurse draw up in the syringe?

Name 2 things besides sand that are not soluble in water

What are the acids in the following equilibrium reaction cn h2o hcn oh?

If the pH of an acid is 4.0, what is the pOH?

A series circuit has two 5.0-ohm resistors and a power source of 9.0 volts. How will the current be affected and what will it be if another resistor (with a resistance of 7.5 ohms) is added to the circuit? A. increase; 0.51 amps B. increase; 0.

Which type of reaction will occur when equal volumes of 0.1 M HCl and 0.1 M NaOH are mixed 1. Neutralization 2. Ionization 3. Electrolysis 4. Hydrolysis

What is molarity of heavy water?

Do all liquids freeze at the same rate

Convert 1.67 x10^24 atoms of carbon to moles of carbon