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3 years ago

HELP ASAP!! WILL GIVE BRAINLIEST

Chemistry

1 answer:

ale4655 [162]3 years ago

7 0

Answer:

Explanation:

Uniformitarianism is the idea that all of the natural world operates now in the same way it did in the past. The exception here is human intervention.

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When we mix aqueous solutions of silver nitrate and sodium chloride, a white precipitate of silver chloride forms in the reactio

zloy xaker [14]

Answer:

solid substance formed during liquid solution, is known as precipitate. For example: in the reaction of silver nitrate and sodium chloride, a precipitate of silver chloride is formed which is white in colour. Precipitation can be of any colour like white, yellow, black.

6 0

3 years ago

What is the total probability of finding a particle in a one-dimensional box in level n = 4 between x = 0 and x = L/8?

Lubov Fominskaja [6]

Answer:

P = 1/8

Explanation:

The wave function of a particle in a one-dimensional box is given by:

$\psi = \sqrt \frac{2}{L} sin(\frac{n \pi x}{L})$

Hence, the probability of finding the particle in the one-dimensional box is:

$P = \int_{x_{1}}^{x_{2}} \psi^{2} dx$

$P = \int_{x_{1}}^{x_{2}} (\sqrt \frac{2}{L} sin(\frac{n \pi x}{L}))^{2} dx$

$P = \frac{2}{L} \int_{x_{1}}^{x_{2}} (sin^{2}(\frac{n \pi x}{L}) dx$

Evaluating the above integral from x₁ = 0 to x₂ = L/8 and solving it, we have:

$P = \frac{2}{L} [\frac{L}{16} (1 - 4\frac{sin(\frac{n \pi}{4})}{n \pi})]$

$P = \frac{1}{8} (1 - 4\frac{sin(\frac{n \pi}{4})}{n \pi})$

Solving for n=4:

$P = \frac{1}{8} (1 - 4\frac{sin(\frac{4 \pi}{4})}{4 \pi})$

$P = \frac{1}{8} (1 - \frac{sin (\pi)}{\pi})$

$P = \frac{1}{8}$

I hope it helps you!

7 0

3 years ago

Which of the following would be investigated in reaction stoichiometry? Group of answer choices The types of bonds that break an

DENIUS [597]

Answer:

The mass of potassium required to produce a known mass of potassium chloride

Explanation:

Stoichiometry deals with the relationship between amount of substances, mass of substances or volume of substances required in a chemical reaction. Stoichiometric relationships may involve reactants alone or reactants and products. These relationships are normally in the form of simple proportion.

A typical example is our answer option, the mass of potassium required could be used to determine the mass of potassium chloride produced after a balanced reaction equation is written.

7 0

3 years ago

A chemistry student weighs out of acetic acid into a volumetric flask and dilutes to the mark with distilled water. He plans to

xeze [42]

Answer:

Your question is not complete, but use this answer as a guide for your solution.

Question: A chemistry student weighs out 0.112g of acetic acid (HCH₃CO₂) into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1600 <em>M</em> NaOH solution. Calculate the volume of solution the student will need to add to reach the equivalence point. Be sure your answer has the correct number of significant digits.

Answer: Volume of NaOH is 11.6 mL

Explanation:

The reaction of acetic acid with NaOH is as follows:

CH3COOH + NaOH -----> CH3COONa + H2O

M1V1 = M2V2

Here M1 V1 are molarity and volume of acetic acid.

M2, V2 are molarity and volume of NaOH.

Number of moles of acetic acid:

0.112 g CH3COOH × (1 mol / 60.05 g) = 0.001865 mol

Molarity = moles of solute / Liters of solution

Molarity = 0.001865 mol / 0.250 L = 0.00746 M

Hence,

M1 = 0.00746 M

V1 = 250 mL

M2 = 0.160 M

V2 = ?

V2 = M1V1 / M2

V2 = 0.00746 M × 250 mL / 0.160 M

V2 = 11.6 mL

Hence the volume of NaOH is 11.6 mL

4 0

3 years ago

Which atmospheric layer did Baumgartner fall from? *<br> Choose

ICE Princess25 [194]

Answer:

the second layer of the atmosphere.

7 0

3 years ago