A pair of ice tongs is a double:

first-class lever

second-class lever

third-class lever

The structural formula for a water molecule is

How many protons are in the nucleus of an atom with an atomic number of 20

Snape grows tired of these conceptual questions and thinks it's time for a problem. What is the retention factor if the distance traveled by the solvent front is 2.00 cm, and the distance traveled by the ion is 0.40 cm?

When the moon is aligned with and between Earth and the Sun which phase is happening

What is the molar mass for Mn3O4?

A rock has 12.5 percent of its original amount of potassium-40 remaining in it; potassium-40 has a half-life of 1.25 billion years. How long ago was the rock formed? A. 1.25 billion years ago B. 2.5 billion years ago C. 3.75 billion years ago D.

Calcium is an element. What is the smallest particle of calcium that has all the chemical properties of calcium?

Which is the best term to use when describing the energy of motion

The pka of hypochlorous acid is 7.530. a 54.0 ml solution of 0.114 m sodium hypochlorite (naocl) is titrated with 0.337 m hcl. calculate the ph of the solution

An atom has no overall charg if it contains equal number of