Answer:
0.29
Explanation:
Step 1: Write the balanced equation at equilibrium
3 NO₂(g) + H₂O(l) ⇄ 2 HNO₃(aq) + NO(g)
Step 2: Calculate the molar concentration of the substances
We will not calculate the molarity of H₂O because pure liquids are not included in the equilibrium constant. We will use the following expression.
Molarity = mass of solute / molar mass of solute × liters of solution
Since the volume of the vessel is missing, we will assume it is 1 L to see the procedure.
[NO₂] = 22.5 / 46.01 g/mol × 1 L = 0.489 M
[HNO₃] = 15.5 g / 63.01 g/mol × 1 L = 0.246 M
[NO] = 16.6 g / 30.01 g/mol × 1 L = 0.553 M
Step 3: Calculate the value of the equilibrium constant Kc for this reaction
Kc = [HNO₃]² × [NO] / [NO₂]³
Kc = 0.246² × 0.553 / 0.489³
Kc = 0.29
Oxygen is participating in non-polar covalent bond(s)
Oxygen forms 2 covalent bond.
This is because oxygen atoms have 6 valence electrons. This means that it has 2 lone pairs and 2 unpaired electrons that are shared in order to achieve octet configuration.
In this chemistry, the 2 lone pairs on the oxygen are not shared with any other atoms. Instead; they are assigned to the oxygen atom. The formal charge on the oxygen atom is zero. Oxygen's atomic number is 8 and is equal to the sum of the number of its valence and inner shell electrons.
<h3>What is non-polar covalent bonding?</h3>
Nonpolar covalent bonding is a kind of covalent bond in which the bonding electrons are shared equally between the two atoms.
Learn more about non-polar covalent bonding:
brainly.com/question/26056508
Answer:
an article on the beneficial bacteria in yogurt, featured in Medical Journal of Gastroenterology
Explanation:
This article is published in a Medical Journal, which means the contents must be credible, informative, and accurate. In order to be these things, the author most likely had others review their writing to remain objective and ensure quality work. The other articles are not meant to solely inform and are featured in less credible magazines. Therefore, the third option is correct.
Answer:
second one is the answer
Explanation:
because when filling electrons in the orbital we first half fill each of them as it gains a stable configuration
The answer is sodium chloride
