2 years ago

How many core electrons does argon have?

Chemistry

1 answer:

Artemon [7]2 years ago

4 0

10 core electrons are in argon.

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What is the pressure if 0.567 moles of gas occupy 4.5 liters at a temperature of 300.0 K?

kakasveta [241]

The answer is D. Use the equation PV=nRT
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2 years ago

A gas has a volume of 490. mL at a temperature of -35.0 degrees C. What volume would the gas occupy at 42.0 degrees Celsius? Ple

miskamm [114]

Answer:

648.5 mL

Explanation:

Here we will assume that the pressure of the gas is constant, since it is not given or specified.

Therefore, we can use Charle's law, which states that:

"For an ideal gas kept at constant pressure, the volume of the gas is proportional to its absolute temperature"

Mathematically:

$\frac{V}{T}=const.$

where

V is the volume of the gas

T is its absolute temperature

The equation can be rewritten as

$\frac{V_1}{T_1}=\frac{V_2}{T_2}$

where in this problem we have:

$V_1=490 mL$ is the initial volume of the gas

$T_1=-35.0^{\circ} + 273 = 238 K$ is the initial temperature

$T_2=42.0^{\circ}+273=315 K$ is the final temperature

Solving for V2, we find the final volume of the gas:

$V_2=\frac{V_1 T_2}{T_1}=\frac{(490)(315)}{238}=648.5 mL$

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3 years ago

A geological process (2 points)

densk [106]

They are all correct good job bud I hope it helps and good luck

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3 years ago

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How do you write 561983 in scientific notation?

Artist 52 [7]

Answer:

5.61983 × 10^5

Explanation:

Move the decimal forward 5 spaces, each time doing so you add 10^(# of spaces moved, in this case 5)

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2 years ago

Witch of the following is a homogeneous mixture?

ivanzaharov [21]

B) Seawater. Because, it all has the same consistency. With the other choices, like vegetable soup, in one spoon full you may get a bit of potato but in another spoon full you may get a lima bean.

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2 years ago

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