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PIT_PIT [208]
3 years ago
14

Phenolphthalein is used as a visual indicator in a strong acid-strong base titration because

Chemistry
1 answer:
marysya [2.9K]3 years ago
3 0
A strong acid- strong base titration is performed using a phenolphthalein indicator. Phenolphtalein is chosen because it changes color in a pH range between 8.3 – 10. It will appear pink in basic solutions and clear in acidic solutions. ... It is known as the titrant.
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A Potassium (K) atom attains a stable electron configuration when it combines with.
likoan [24]
Answer is: <span>one chlorine atom.
They form ionic compound potassium-chloride (KCl).
</span>Electron configuration of potassium: ₁₉K 1s²2s²2p⁶3s²3p⁶4s¹.
Electron configuration of chlorine: ₁₇Cl 1s²2s²2p⁶3s²3p⁵.
Potassium lose one electron to <span>attains a stable electron configuration of noble gas argon (Ar).</span>
8 0
4 years ago
A sample of C3H8 has 8.08 × 1024 H atoms.
quester [9]
(8.08x10^24 H atoms)(3 C atoms/8 H atoms)
=3.03x10^24 C atoms
3.03x10^24+8.08x10^24=1.111x10^25 atoms total
(1.111x10^25)/(6.02x10^23)=18.4551495 mol C3H8
18.4551495(44.01)=812.2111296g C3H8
5 0
4 years ago
Read 2 more answers
Qué concentración en % m/m tendrá una solución preparada con 20 g de NaCl (cloruro de sodio, sal común) y 200 g de agua?
alexgriva [62]

Answer:

\%m/m = 10\,\%

Explanation:

El porcentaje masa a masa de la solución se obtiene al dividir la masa del cloruro de sodio por la masa del agua (The mass-mass percentage of solution is obtained by dividing the mass of sodium chloride by the mass of water):

\%m/m = \frac{20\,g}{200\,g}\times 100\,\%

\%m/m = 10\,\%

4 0
3 years ago
Which of the following definitions best describes a parallel of latitude?
Alexxandr [17]
I think the answer is A: a line that is drawn horizontally around the earth and is parallel to the Prime Meridian

Hope this helps:)
8 0
3 years ago
Read 2 more answers
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
topjm [15]

Answer:

1. C

2. C

3. P

4. P

5. P

6. M

7. C

8. P

Explanation:

3 0
3 years ago
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