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IRINA_888 [86]
2 years ago
11

Match the molecular shapes to the correct Lewis structures

Chemistry
2 answers:
natali 33 [55]2 years ago
8 0

Answer:

1) trigonal planar

2)tetrahedral

3)trigonal pyramid

4) linear

Solnce55 [7]2 years ago
8 0

Answer:

Match up correct answers:

1) <em>trigonal planar</em>

2) <em>tetrahedral</em>

3) <em>trigonal pyramid</em>

4) <em>linear</em>

Explanation:

(correct answers on <em>portal</em> and <em>edmentum </em>users)

Hope I was helpful, have a great day and good luck :)

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Based on the three formulas shown, use one of them to solve for the purple yellow and red box and explain how you did it.
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P = 11.133 atm (purple)

T = -236.733 °C(yellow)

n = 0.174 mol(red)

<h3>Further explanation  </h3>

Some of the laws regarding gas, can apply to ideal gas (volume expansion does not occur when the gas is heated),:  

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So that the three laws can be combined into a single gas equation, the ideal gas equation  

In general, the gas equation can be written  

\large {\boxed {\bold {PV = nRT}}}

where  

P = pressure, atm  

V = volume, liter  

n = number of moles  

R = gas constant = 0.08206 L.atm / mol K  

T = temperature, Kelvin  

To choose the formula used, we refer to the data provided

Because the data provided are temperature, pressure, volume and moles, than we use the formula PV = nRT

  • Purple box

T= 10 +273.15 = 373.15 K

V=5.5 L

n=2 mol

\tt P=\dfrac{nRT}{V}\\\\P=\dfrac{2\times 0.08205\times 373.15}{5.5}\\\\P=11.133~atm

  • Yellow box

V=8.3 L

P=1.8 atm

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T = 12 + 273.15 = 285.15 K

V=3.4 L

P=1.2 atm

\tt n=\dfrac{PV}{RT}\\\\n=\dfrac{1.2\times 3.4}{0.08205\times 285.15}\\\\n=0.174~mol

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2 years ago
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Mass; m = 13.5 grams

Volume; V = 5 cm³

Formula for density is;

density = m/V

Density = 13.5/5

Density = 2.7 g/cm³

From the table attached, we can see that the element with a corresponding density of 2.7 is Aluminium

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