How many unpaired electrons does oxygen have?

What are the type of bones structure in the skeletal system

This week in lab you will use the spectrovis plus spectrophotometer to measure the light that is absorbed by dopachrome, a dark orange/brown molecule. is a solution that appears dark orange in color absorbing orange wavelengths of light?

What is the empirical formula of a compound if a sample contains 5.97 grams of carbon and 0.99 grams of hydrogen?

Think about a neutral magnesium atom. Then think of a magnesium ion with a 2+charge. How are these two alike? How are they different? Be sure to use the terms proton, neutron, and electron in your answer.

The definition of canon

A light has a wavelength of 4.10*10^12m. What is the Frequency?

If a compound has a molar más of 180g/mol and it's empirical formula is CH^2O, what is it's molecular formula?

Complete noble gas electron configuration for manganese ii ion

What term represents a chemical reaction

Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li (s) + N2 (g) → 2Li3N (s) How many moles of lithium are needed to produce 0.60 mol of Li3N when the reaction is carried out in the presence of excess nitrogen?