A compound contains iron, carbon, and oxygen. A sample weighing 20.00 grams contains 9.64 grams of iron and 2.08 grams of carbon. Find the empirical formula for the compound.

The is a particle with one unit of positive charge a. proton b. positron c. electron d. nucleus awnser quick it is a important science test!

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

Adilute aqueous potassium nitrate solution is