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Brut [27]
2 years ago
14

Plz help bc this s due at exactly 3:30pm

Chemistry
2 answers:
Orlov [11]2 years ago
7 0

Answer:

Is it talking about the differences about them or the ways they are the same

Explanation:

ioda2 years ago
4 0
I’m pretty sure it’s d.
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10. In which of the following is the symbol for the ion and the total number of electrons it contains given correctly?
dalvyx [7]

Answer:

10. D

9. A

8. A or B

Explanation:

10. Calcium has 20 electrons, but the Calcium ion has 18 electrons.

9. The mass of electrons are negligible.

8. Electrons have a very small mass where some consider it to have no mass.

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3 years ago
Use the map to explain where the South American and African plates were located hundreds of thousands of years ago. Africa was m
DaniilM [7]
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2 years ago
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A) Find the gas speed of sulfur dioxide at 100.0 degrees Celsius? ______________
gtnhenbr [62]

a. 381.27 m/s

b. the rate of effusion of sulfur dioxide = 2.5 faster than nitrogen triiodide

<h3>Further explanation</h3>

Given

T = 100 + 273 = 373 K

Required

a. the gas speedi

b. The rate of effusion comparison

Solution

a.

Average velocities of gases can be expressed as root-mean-square averages. (V rms)  

\large {\boxed {\bold {v_ {rms} = \sqrt {\dfrac {3RT} {Mm}}}}

R = gas constant, T = temperature, Mm = molar mass of the gas particles  

From the question  

R = 8,314 J / mol K  

T = temperature  

Mm = molar mass, kg / mol  

Molar mass of Sulfur dioxide = 64 g/mol = 0.064 kg/mol

\tt v=\sqrt{\dfrac{3\times 8.314\times 373}{0.064} }\\\\v=381.27~m/s

b. the effusion rates of two gases = the square root of the inverse of their molar masses:  

\rm \dfrac{r_1}{r_2}=\sqrt{\dfrac{M_2}{M_1} }

M₁ = molar mass sulfur dioxide = 64

M₂ =  molar mass nitrogen triodide = 395

\tt \dfrac{r_1}{r_2}=\sqrt{\dfrac{395}{64} }=\dfrac{20}{8}=2.5

the rate of effusion of sulfur dioxide = 2.5 faster than nitrogen triodide

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2 years ago
I need help ASAP 10 points
jekas [21]

Answer:

the sun beams down on the pool and heats it up top to bottom the deeper the colder

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Which statement BEST describes elements that would create the MOST polar bonds?
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C) elements from the top left and the top right of the periodic table
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