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tresset_1 [31]
3 years ago
5

Give me 3 facts and 3 superstitious about the moon​

Chemistry
2 answers:
KatRina [158]3 years ago
8 0
Facts


1. The internet connection is so high on the due to laser connection


2.Its the satellite of the Earth


3.It is a very cold place
PolarNik [594]3 years ago
6 0

Facts:

1. The Moon has no atmosphere

2. The Moon has quakes

3. The Moon is a dusty ball of rock, measuring 3,476km in diameter

Superstitions :

1. Gazing too long at the full moon will bring out one’s inner lunatic.

2. The waxing of a new moon is the best time for sowing seeds, weddings, childbirth, new projects and travel.

3. It is bad luck to see the new moon, for the first time of the night, through glass or tree branches.

Hope this helps and if it does, don't be afraid to give my answer a "Thanks" and maybe a Brainliest if it's correct?  

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If kb for nx3 is 4.0×10−6, what is the poh of a 0.175 m aqueous solution of nx3?
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<h3><u>Answer;</u></h3>

pOH = 3.08

<h3><u>Explanation;</u></h3>

NX3 + H2O <----> NHX3+ + OH-  

Kb = 4.0 x 10^-6

Kb = c(NH₄⁺) · c(OH⁻) ÷ c(NH₃).

c(NH₄⁺) = c(OH⁻) = x.

x² = Kb · c(NH₃)

x² = 4.0 × 10⁻⁶ × 0.175 = 7.0 × 10⁻⁷.

x = c(OH⁻) = √(7.0 × 10⁻⁷)

    = 8.367 × 10⁻⁴

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        =- log ( 8.367 × 10⁻⁴)

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What is the density of chlorine gas (MM = 71.0glmol) at 1.50 atm and 25.0C
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Answer: D=4.35g/L

Explanation:

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Since we are give pressure and temperature, we can use the ideal gas law to find moles/volume. FInding moles/volume would give us the base for density. All we would have to do is convert moles to grams.

Ideal Gas Law: PV=nRT

\frac{n}{V} =\frac{P}{RT}

\frac{n}{V}=\frac{1.50 atm}{(0.08206Latm/Kmol)(25+274.15K)}

\frac{n}{V} =\frac{0.061309mol}{L}

Now that we have moles, we can use molar mass of chlorine gas to find grams.

0.061309mol*\frac{71.0g}{mol} =4.3529g

With our grams, we can find our density.

D=\frac{4.3529g}{L}

We need correct significant figures so our density is:

D=\frac{4.35g}{L}

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