What is a dense positively charged mass in the center of an atom

The mass of an atom may be determined by adding the masses of the protons and neutrons in the nucleus. Why is it unnecessary to include the electrons when determining the mass of an atom?

Does pollen make dogs sleepy

The chemical reaction in which solid calcium oxide is treated liquid water is an example of what: A) decomposition B) combustion reaction C) single replacement D) synthesis E) double replacement

Molecules and atoms. which is more massive: an atom, a molecule, an isotope, or an ion?

What is the molarity of 2.0 liters of an aqueous solution that contains 0.50 mol of potassium iodide

How to put a solution back into solution when it comes out of solution chemistry?

When the isotonic saline solution described in part A is connected to an unknown solution via a semipermeable membrane, the unknown solution level drops.

What is the best estimate and range for 22 20 18 24 21 23

19 How many moles of Cly are produced from 1 mole of CCle.

Which question can be answered using the scientific method? A) Which dog food is best for healthy teeth? B) What color is the most attractive? C) What is my purpose in life? D) Which flower smells the best?