If a sample contains 21.2 g N, how many moles of N does it contain?

0.66 mol

1.51 mol

14.01 mol

297.01 mol

What is the difference between an amide and an amine? And what is a substituted amide?

What is the conservation of mass

Which ion does an acid contain most of

In DNA copying, the bonds between the nitrogen bases are broken down by a (n) ?

A bottle of perfume is opened at one end of a room. A person sitting at the other end smells the perfume within a few minutes. Which of the following explanations is true? a.

Paint, paint thinners and some cleaning agents can weaken the shell of a hard hat and may eliminate

A 10 chunk of metal has a specific heat of 0.25 J/g ºC. The temperature is changed from 10ºC to 45ºC. How much heat is required?

In this reaction what is the correct coefficient for sodium chloride? pb (no3) 2? nacl → pbcl2? nano3

Classify each of the following as a path function or a state function. work energy distance traveled enthalpy heat

Flammable materials like alcohol should never be dispensed or used near True or False