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jasenka [17]
3 years ago
8

What are is the pH range of phenolphthalein and methyl orange​

Chemistry
1 answer:
Ad libitum [116K]3 years ago
5 0

Answer:

The pH range of indicators

indicator pKind pH range

litmus 6.5 5 - 8

methyl orange 3.7 3.1 - 4.4

phenolphthalein 9.3 8.3 - 10.0

Explanation:

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3 years ago
A photon has a frequency of 2.68 x 10^6 HZ calculate it's energy
Nat2105 [25]

Answer:

1.77*10^-27

Explanation:

E= hf

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Base your answer on the information below. in liquid water, an equilibrium exists between h2o() molecules, h+(aq) ions, and oh–(
kicyunya [14]

Answer:

OH^-

Explanation:

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8 0
3 years ago
Use the definition of molarity to calculate the concentration of 12.34 g of CaSO4 completely dissolved in water, with a solution
Ede4ka [16]

Answer:

[CaSO₄] = 36.26×10⁻² mol/L

Explanation:

Molarity (M) → mol/L → moles of solute in 1L of solution

Let's convert the volume from mL to L

250 mL . 1L/1000 mL = 0.250L

We need to determine the moles of solute. (mass / molar mass)

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8 0
3 years ago
A silver coin with a mass of 14.1g has a density of 10.5 grams
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1.34 cubic centimeter

Explanation:

v = m/d

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