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3 years ago

By using the titration technique, what can be determined about a given substance?

Chemistry

2 answers:

Lilit [14]3 years ago

7 0

Unit 2 Lesson 9 Portfolio Lab Answers

1 A

2 C

3 D

4 A

5 B

6 C

7 A

8 B

9 D

10 A

11 C

12 B

13 A

gtnhenbr [62]3 years ago

3 0

It is strong. it is really strong

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What is The difference between the Carbon-12 and Carbon-14 isotopes is the

lilavasa [31]

The main difference between carbon-12 and carbon-14 is the number of neutrons present in each compound. Carbon-12 has six neutrons, while carbon-14 has eight neutrons, explains About.com. The differing number of neutrons is responsible for numerous differences between the two compounds.

7 0

3 years ago

Read 2 more answers

What is law of conservation of mass

dexar [7]

Answer:

Mass in an isolated system can neither be destroyed nor created.

Explanation:

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3 years ago

If i have about 68.2 grams of H2S, how many moles do i have?

natita [175]

Answer:

2.1 mol

Explanation:

68.1g / 34.1 g/mol = 2.1mol

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4 years ago

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Calculate the mass (in grams) of methylene bluecrystals that you must weigh in order to make 100.0mL of 1.25 × 10-5mol/L methyle

mario62 [17]

Answer: The mass of methylene blue that must be weighed is $3.99\times 10^{-4}g$

Explanation:

To calculate the mass of solute, we use the equation used to calculate the molarity of solution:

$\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}$

We are given:

Molarity of solution = $1.25\times 10^{-5}M$

Molar mass of methylene blue = 319.85 g/mol

Volume of solution = 100.0 mL

Putting values in above equation, we get:

$1.25\times 10^{-5}M=\frac{\text{Mass of methylene blue}\times 1000}{319.85\times 100.0}\\\\\text{Mass of methylene blue}=\frac{1.25\times 10^{-5}\times 319.85\times 100.0}{1000}=3.99\times 10^{-4}g$

Hence, the mass of methylene blue that must be weighed is $3.99\times 10^{-4}g$

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3 years ago

If electrons are collectively compressed into a very small volume (e.g., within the core of a dying white dwarf star) where quan

m_a_m_a [10]

Answer: A degenerate pressure will generate a large force to repel further compression.

Explanation: In the production of new stars from the core of old dying white dwarf stars, the inner parts of the star will experience contraction with the release of heat , as they contract, their atoms will be squeezed such that their electrons start to overlap, and because of the Pauli's exclusive principle which states that no two electrons can occupy same space, the electrons will begin to repel each other and an opposing pressure called degenerate pressure will create a force so that the electrons cannot continually be crushed or overlap. With the limit of contraction, the outer parts of the star will expand and be repelled releasing the old stars called nebula and creating space for the inner new stars to form.

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3 years ago