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2 years ago

Stirring a liquid while you are mixing in another ingredient speeds up the rate of dissolving. Question 13 options: True False

Chemistry

2 answers:

brilliants [131]2 years ago

8 0

Answer:

true

Explanation:

This is because it helps distribute the particles that are being dissolved.

Aliun [14]2 years ago

3 0

The answer would be true

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What is the balanced equation for the combustion of magnesium?

Lostsunrise [7]

Answer:

2Mg + O2 → 2MgO

Explanation:

In all conbustion you should know, that reactans are an specific compound and O2, so the products must be CO2 and H2O, or in this case, the corresponding oxide.

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

2 years ago

Is atomic weight a whole number or not a whole number

steposvetlana [31]

Answer:

Atomic mass of an element is not a whole number because It contains isotopes. For example, chlorine has two isotopes 1735Cl and 1737Cl with natural abundances in the approximate ratio of 3:1. Hence, the average atomic mass of chlorine is approximately 35.5 g/mol.

Hope this helps! If so please mark brainliest and rate/heart if it did to help my account out!!

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3 years ago

Explain in terms of charge distribution why a molecule of butanamide is polar

Phoenix [80]

The butanamide molecule has an asymmetrical distribution of charge.

The molecule has uneven charge distribution<span />

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2 years ago

how many electrons occupy the pz atomic orbital in Hg? the answer is 10 and it is right but i do not understand why.

MariettaO [177]

Im no sure what it is i just love helping little boys out. at this age it gives me a thrill.

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3 years ago