Sort the following in order of size; DNA, cell, nucleus, chromosome

During the combustion of NH3, there is an increase in the amount of oxygen present, from 5 to 20 moles while the amount of NH3 remains unchanged. Given this change in oxygen, what can we say about this chemical reaction?

When transition metal atoms lose electrons to form ions, the electrons come first from the highest filled s atomic orbital.

In your OWN words ... HOW is Hydropower produced?

Suppose 0.981 g of iron (II) iodide is dissolved in 150. mL of a 35.0 m M aqueous solution of silver nitrate.

if you gently shake a carbon di oxide fire extinguisher you will feel the presence of liquid within the extinguisher. What condition shoud be maintained so that carbon dioxide is in liquid state

How many particles are in 1 mole of a substance?

Initially you dissolved all, or most, of the p-aminobenzoic acid in ethanol. then you slowly added sulfuric acid. as you did this, a large amount of white solid formed. during the course of the reaction, that white solid dissolved.

How do you know if a chemical reaction has occurred?

Why must a container or system be closed for equilibrium to be established?

What is the bond angle between the hydrogen atoms in an ammonia (NH₃) molecule?