There are 252.07 grams of ammonium dichromate per mol of ammonium dichromate molecules. There are 8 atoms of hydrogen per molecule of ammonium dichromate.
Convert grams to mole of molecules. And then molecules to atoms.
55.90 / 252.07 = moles of molecules
Since there are 8 hydrogen per 1 molecule multiply this by 8.
55.90 * 8 / 252.07 = 1.77 moles of hydrogen
Answer:
It applies only to American cities
Explanation:
Answer:
B. Underwriters' Laboratories, Inc.
Explanation:
The Underwriters' Laboratories, Inc. conducts all kinds of security certifications, including electrical equipment, that's why you see the circular UL Certified logo on every electrical device sold in the US, including all electronic devices.
The National Fire Prevention Association develops standards for electricity installations in the workplace, the National Electric Code (for buildings) and other similar.
The National Electrical Manufacturers Association sets norms for the generation and transportation of energy, for the power providers.
Certified Ballast Manufacturers is just an association of electric ballast makers.
