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SSSSS [86.1K]
3 years ago
5

Karl went to the doctor complaining of a sore throat. The doctor performed

Chemistry
1 answer:
nydimaria [60]3 years ago
6 0

Answer:

A

Explanation:

bc

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¿por qué la conducción ocurre más lentamente en los gases que en los sólidos?​
SIZIF [17.4K]

Answer:

escribe esa pregunta en una región de Latinoamérica

6 0
3 years ago
What is the hydronium ion concentration in an aqueous hydrobromic acid solution with a pH of 4.530?
Aloiza [94]

Answer:

2.951 × 10⁻⁵ M

Explanation:

Let's consider the acid reaction of hydrobromic acid according to Brönsted-Lowry acid-base theory.

HBr(aq) + H₂O(l) ⇒ Br⁻(aq) + H₃O⁺(aq)

Given the pH = 4.530, we can calculate the concentration of the hydronium ion using the following expression.

pH = -log [H₃O⁺]

[H₃O⁺] = antilog -pH = antilog -4.530 = 2.951 × 10⁻⁵ M

4 0
3 years ago
If a decrease in temperature accompanies a reaction, what occurred?
marusya05 [52]
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8 0
3 years ago
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What is the molarity of a solution prepared by dissolving 8 grams of BaCl2 in enough
olga55 [171]

Answer:

Explanation:

molar mass of BaCl2 = 208.23

mol of BaCl2 = 8/208.22

mol of BaCl2 = 0.03841905

Molarity = 0.03841905/0.450

Molarity = 0.085 M

6 0
2 years ago
Which choice represents a pair of resonance structures? Note that lone pairs have been omitted for clarity. View Available Hint(
stepladder [879]

Answer:

A. O=C=O and O≡C−O

Explanation:

Resonance:                                                                                                                

          When the electron distribution on the molecule become uneven like one molecule have more electron compare to other.Resonance occurs due to overlap of the orbitals.When electron flow through pi system then resonance occurs.

So the option A is correct.

A. O=C=O and O≡C−O

6 0
3 years ago
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