What is the atomic number of hydrogen? ?

What is the mass of 0.46 mol of mgcl2

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.

The missing component to the table to the right or indicated with orange letters complete the table by filling in the corresponding numbers or symbols