help? In the chemical reaction 3H2 + N2 --> 2NH3, how many moles of NH3 will be produced if 4 moles of nitrogen react?

Sodium nitrite (nano2) reacted with 2−iodooctane to give a mixture of two constitutionally isomeric compounds of molecular formula c8h17no2 in a combined yield of 88%. draw reasonable structures for these two isomers. click the "draw structure" button to launch the drawing utility. place the two compounds in the appropriate boxes below.

State one important difference between a physical change and a chemical change?

Light waves are as they pass through the