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Naily [24]
3 years ago
9

A student collected the data shown in the table below during an experiment.

Chemistry
1 answer:
pentagon [3]3 years ago
3 0

Answer: The answer is C.  A mercury thermometer is better to measure very small changes in temperature.

Explanation:

i took this quiz and this is the answer .

A) A mercury thermometer can measure the freezing point of a liquid that freezes at −80 °C.

B) An alcohol thermometer can measure the boiling point of a liquid that boils at 80 °C.

C) A mercury thermometer is better to measure very small changes in temperature.

D) An alcohol thermometer is better to measure the boiling points of colorless liquids.

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Question 6 (3 points)
olga55 [171]

Answer:

Explanation:

Given parameters:

Molarity of KOH = 0.26M

Volume of H₂SO₄ = 19.76mL

Molarity of H₂SO₄ = 0.20M

Unknown:

Volume of KOH = ?

Solution:

This is a neutralization reaction in which an acid reacts with a base to produce salt and water:

         H₂SO₄     +     2KOH      →    K₂SO₄    +     2H₂O

 We solve from the known to the unknown in the reaction.

The known is the acid and from there we can find the number of moles of the acid to be completely neutralized:

       Number of moles of acid = molarity x volume

       Number of moles of acid = 19.76 x 0.20 = 3.95mol

From the balanced reaction equation:

      1 mole of acid reacts with 2 moles of the bases KOH

     3.95mole of acid would react with 3.95moles x 2 of the base

  Number of moles of reacting base = 7.90moles

To find the volume of base;

  Volume of base = \frac{number of moles of base}{molarity}

   Volume = \frac{7.90}{0.26} = 30.40mL

Learn more:

Neutralization brainly.com/question/6447527

#learnwithBrainly

8 0
3 years ago
What are the 2 basic parts of an atom?
Lerok [7]

Answer:

nucleus and electrons

Explanation:

nucleus contains protons and neutrons

5 0
3 years ago
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The product of a combination reaction is Ba(OH)2 . If one of the reactants is H2O , what is the other reactant
Gnoma [55]

BaO..........................

7 0
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How many total atoms are found in one molecule of alpo4?
Kruka [31]
There is 1 aluminium atom and 4 polonium atoms
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13. Examine the following table, each letter represents a piece of missing information. Below
Romashka-Z-Leto [24]

Answer: i can understand it sorry

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5 0
3 years ago
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