Answer is: a) in the presence of a base.
Phenolphthalein is colorless in acidic solutions and pink in basic solutions.
Acid-base indicators are usually weak acids or bases and they are chemical detectors for hydrogen or hydronium cations.
Example for acid-base indicator is phenolphthalein (molecular formula C₂₀H₁₄O₄).
When solution turns phenolphthalein pink, it means it is basic (pH>7).
Kelvin. Kelvin is the scientific term used in temperature senses, and was created so everybody around the world would have the same measurements and not get confused about whether it was Fahrenheit or Celsius.
Answer:
i am so sorry. i do not have a answer but i am trying to find questioms i can answer
Answer:
400 K
Explanation:
Please see the step-by-step solution in the picture attached below.
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Answer:
35 gm
Explanation:
What is mass of 0.6 mol C4H10
C4H10 has a molar nass of
(4X12) (10
X 1) = 48 + 10 8
so 1 mole of C4H10 is 58 gm
so 0.6 moles is
(0.6 X58) = 35 gm
