How do I go from molecules to moles? For example 1.50e23 molecules NH3 how many moles are in this problem?

In the atomic model, what particles are found inside the nucleus of an atom

For the chemical equations shown below, label each reactant as either acid or base, and each product as either conjugate acid or conjugate base according to the brønsted-lowry definition. drag each label to the appropriate target.

The rate of a certain reaction is given by the following rate law: rate k[H2]^2[NH3]Use this information to answer the questions below.

Solid yellow powdery dull poor conductor The list of properties describes the element sulfur. Classify sulfur.

You can use radiometric dating on all minerals to tell their absolute age. a. True b. False

Calculate the solubility of cux (ksp=[cu2+][x2-]=1.27*10-36) in a solution that is 0.190 m in nacn.

An atom has seven valance electrons which element could have this type of atom

How is the ocean important to human survival? restate the question

A sample of pure lithium contains 7.99% lithium by mass. What is the % lithium by mass in a sample of pure lithium nitrate that has twice the mass of the first sample?

What ecosystem is being described in the passage?