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Marysya12 [62]
4 years ago
11

Which property of a substance can be determined using a pH indicator?

Physics
2 answers:
Ann [662]4 years ago
8 0

Answer:

a) Acidity

<h3><u>More</u><u> </u><u>to</u><u> </u><u>know</u><u> </u></h3>

  • The pH scale is a mixture of indicator which on dissolving indicate whether the substances is acidic in nature or basic .

  • The value between 1 to 7 is acidic

  • The value between 7 to 14 is basic

  • The value 7 is neutral

  • Acids are sour in taste and turn blue litmus ( indicator) to red

  • Base are bitter in taste and turn red litmus to blue.

  • Salts are neutral and obtain by the reaction between acid and bases.
Gekata [30.6K]4 years ago
3 0

Answer:

Acidity

Explanation:

pH measures how acidic or basic a substance is.

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The average marathon runner can complete the 42.2-km distance of the marathon in 3 h and 30 min. If the runner's mass is 85 kg,
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Explanation:

Given;

mass of the runner, m = 85 kg

distance covered by the runner, d = 42.2 km = 42,200 m

time to complete the race, t = 3 hours 30 mins = (3 x 3600s) + (30 x 60s)

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The speed of the runner, v = d/t

                                          v = 42,200 / 12,600

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The runner's average kinetic energy during the run is calculated as;

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K.E = 476.96 J

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