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Jobisdone [24]
3 years ago
15

Which of these is a chemical property?

Chemistry
2 answers:
Katyanochek1 [597]3 years ago
6 0
Yes, refer to the previous answer.
Vadim26 [7]3 years ago
5 0
<span>(B.) Flammability of course</span>
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Which of the following is the best example of kinetic energy being transformed into potential energy?
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The correct answer is A

Explanation:

That water stops moving once it gets to the dam and turns into potential energy

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The crater is the bowl-shaped area around a volcano’s central vent. t/f
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2 years ago
A student has two samples of NaCl, each one from a different source. Assume that the only potential contaminant in each sample i
bija089 [108]

Answer:

The correct option is;

A. Which sample has the higher purity

Explanation:

The information given relate to the presence of two samples of NaCl, from different sources

The only potential contaminant in each of the sources = KCl

The content of the sample = NaCl

The molar mass of NaCl = 58.44 g/mol

The molar mass of KCl = 74.5513 g/mol

Let the number of moles of KCl in the sample = X

For a given mass of NaCl, KCl mixture, we have;

The molar mass of potassium = 39.0983 g/mol

The molar mass of chlorine = 35.453 g/mol

The molar mass of sodium ≈ 23 g/mol

Therefore;

Each mole of KCl, will yield 35.453 g/mol per 74.5513 g/mol of KCl

While each mole of NaCl will yield 35.453 g/mol per 58.44 g/mol of NaCl

Therefore, the pure sodium chloride sample will yield more chlorine per unit mass of sample.

As such if the two samples have the same mass, the sample with the contaminant of KCl will yield less mass of chlorine per unit mass of the sample, from which the student will be able to tell the purity of the solution.

The sample with the higher purity will yield  a higher mass chlorine per unit mass of the sample.

6 0
3 years ago
Strontium carbonate + sulphuric acid, chemical equation​
tangare [24]
<h3>Answer:</h3>

SrCO₃ + H₂SO₄ → SrSO₄ + H₂O + CO₂

<h3>Explanation:</h3>

We are required to complete the chemical equation given;

strontium carbonate + sulfuric acid → ??

  • We know that, carbonates reacts with acids to form a salt, water and carbon dioxide.
  • Strontium carbonate reacts with sulfuric acid to form strontium sulfate, water and carbon dioxide.
  • Therefore, the equation for the reaction is;

SrCO₃ + H₂SO₄ → SrSO₄ + H₂O + CO₂

  • The equation is balanced as the number of atoms of each element are equal on both sides of the equation.
7 0
3 years ago
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