In the following chemical reaction, how many moles of n2 are needed to completely react with 3 moles of h2? n2 3 h2 2 nh3

a. 2

b. 3

c. 6

d. 7

A grey rock with white and black flecks. Is this rock a pure substance, mechanical, or a solution? Explain

If you are mixing a solution in a spray bottle with 15 ounces of water, how much chlorine do you need to add for the correct ratio?

You are given three beakers of unknown liquids. One beaker contains pure water. One contains salt water. One contains sugar water. Without tasting the liquids, how could you identify the liquid in each beaker?

What is the universal solvent? A:oil B:acid C:water D:hydrogen

Boyle's Law states and signifies what.

To what chemical reaction class does this reaction belong? 2 mg (s) + o2 (g) 2 mgo (s)

Which best illustrates how particle arrangement changes when solids change into liquids

Express in scientific notation (6.0x10^4) (3.1x10^-1)

How do you measure the mass of a liquid?

Given the following information, calculate the mass for B-11. B-10 has a natural abundance of 19.9 percent, while B-11 has a natural abundance of 80.1 percent. The mass of B-10 is 10.013 amu.