Answer:
9.02×10⁻¹¹ mol NH₃
Explanation:
Convert nanograms to grams:
1.56 ng NH₃ × (1 g / 10⁹ ng) = 1.56×10⁻⁹ g NH₃
Convert grams to moles:
1.56×10⁻⁹ g NH₃ × (1 mol NH₃ / 17.3 g NH₃) = 9.02×10⁻¹¹ mol NH₃
It’s B then A then C then D
Electronegativity is the measure for an atom to acquire an electron to form a bonding pair. Lithium wants to lose its outermost electron and does not want to acquire any more electrons therefore it would have the lowest EN.
<span>
</span>Basic Calcium Facts
Name: Calcium
Atomic Number: 20
Element Symbol: Ca
Group: 2
Period: 4
Block: s
Element Family: Alkaline Earth
Atomic Mass: 40.078(4)
Electron Configuration: [Ar]4s<span>2
</span>
Full: 1s22s22p63s23p64s2 (full)
The two blocks have the same amount of thermal energy.
<h3>Effect of temperature on different mass objects</h3>
Due to platinum metal, the thermal energy is equally distributed in the whole metal so that's equal distribution the thermal energy of both blocks will be the same so we can conclude that the two blocks have the same amount of thermal energy.
Learn more about mass here: brainly.com/question/15476873