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pickupchik [31]
3 years ago
6

Which indicator is the best choice for a strong acid and strong base

Chemistry
1 answer:
Svetradugi [14.3K]3 years ago
7 0

Answer:

phenolphthalein

Explanation:

In the titration of strong acid and strong base, phenolphthalein is used as suitable indicator.

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The reaction that is carried out by the enzyme catalase produces __________. The reaction that is carried out by the enzyme cata
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Answer:

(a) H_{2}O   (b) CO_{2}

Explanation:

The reaction that is carried out by the enzyme catalase produces H_{2} O

The reaction that is carried out by the enzyme catalase produces CO_{2}

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3 years ago
What are the chemical processes used to make chloroquine?
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You spell Chlorine wrong but the process is called electrolysis  
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What orbital is represented by the transition metals in period four
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The name transition metal refers to the position in the periodic table of elements. The transition elements represent the successive addition of electrons to the d atomic orbitals of the atoms. In this way, the transition metals represent the transition between group 2 (2A) elements and group 13 (3A) elements.

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3 years ago
A chemist has to prepare 250.0 mL of a 0.300 M Na2SO4(aq) solution. What mass, in grams, of sodium sulfate (formula mass 142.05
Sedbober [7]

The mass of sodium sulphate, Na₂SO₄, required to prepare the solution is 10.65 g

<h3>How to determine the mole of sodium sulphate Na₂SO₄</h3>
  • Volume = 250 mL = 250 / 1000 = 0.25 L
  • Molarity = 0.3 M
  • Mole of Na₂SO₄ =?

Mole = Molarity x Volume

Mole of Na₂SO₄ = 0.3 × 0.25

Mole of Na₂SO₄ = 0.075 mole

<h3>How to determine the mass of sodium sulphate Na₂SO₄</h3>
  • Molar mass of Na₂SO₄ = 142.05 g/mol
  • Mole of Na₂SO₄ = 0.075 mole
  • Mass of Na₂SO₄ =?

Mass = mole × molar mass

Mass of Na₂SO₄ = 0.075 × 142.05

Mass of Na₂SO₄ = 10.65 g

Thus, 10.65 g of Na₂SO₄ is needed to prepare the solution.

Learn more about molarity:

brainly.com/question/15370276

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2 years ago
What are the possible phenotypes of the offspring?
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Answer:freckles with straight hair

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6 0
3 years ago
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