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zheka24 [161]
3 years ago
11

Please help some one I’ve been trying this all day and it’s due in 5 min

Chemistry
1 answer:
Nonamiya [84]3 years ago
8 0

Answer:

1st box = compound

2nd box = pure compound

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Why do noble gases have low freezing points?
Papessa [141]
This is because, only <span> weak van der Waals forces or weak London dispersion forces are present between the atoms of the </span><span>noble gases.

Hope this helps!</span>
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3 years ago
Describe to me the difference on an<br> atomic/particle level between a Solid and a Gas.
Nitella [24]
Particles in a: gas are well separated with no regular arrangement. liquid are close together with no regular arrangement. solid are tightly packed, usually in a regular pattern.!
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Describe in your own words what is an air front is
zvonat [6]

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6 0
3 years ago
2c2h2(l) 5o2(g) yeild 4co2(g) 2h2o(g) if the acetylene tank contains 37.0 mol of c2h2 and the oxygen tank contains 81.0 mol of o
Murrr4er [49]

2C2H2(l)  +5O2(g)→ 4Co2(g)  + 2H2O

The   limiting  reactant  for reaction above is O2


<u><em>explanation</em></u>

 The limiting reagent is determined using mole ratio  of both reactant.

 that  is the  mole ratio  of  C2H2:O2  which is  2:5 .

 The mole ratio above  implies  that 37.0 mole  of C2H2   needs  37.0 moles  x5/2=92  moles of  O2.


<em>Since the available moles of O2  was 81.0 mole  and 92  moles  are  required to completely  react with  C2H2</em><em> ,</em> <u>O2   is  the limiting reagent.</u>

6 0
3 years ago
Please help fast
Vilka [71]

Moles of Oxygen they took in : C. 2.42

<h3>Further explanation</h3>

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 = 0.08205 l.atm / mol K  

T = temperature, Kelvin  

P=1000 kPa

V = 6 L

T = 298 K

moles of Oxygen :

\tt n=\dfrac{PV}{RT}\\\\n=\dfrac{1000\times 6}{8.31\times 298}\\\\n=2.42~moles

5 0
3 years ago
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