You would have started with 5 grams of reactants
Answer:
5.5 moles of sodium are produced
Explanation:
Given data:
Number of moles of hydrogen = 2.75 mol
Number of moles of Na produced = ?
Solution:
Chemical equation:
H₂ + 2NaCl → 2HCl + 2Na
Now we will compare the moles of hydrogen and sodium from balance chemical equation:
H₂ : Na
1 : 2
2.75 : 2/1×2.75 = 5.5 mol
Thus, 5.5 moles of sodium are produced.
Answer:
Explanation:
h = 6.62607*10^9 Js
then you will need to apply the debroglie equation
The Equation is given by
λ= h/(mv)
where
λ= Wavelength
h = Planck Constant = 6.62607*10^9 Js (asjusted)
m = mass in kg
v = velocity in m/s
Now, substitute all data
a)
bacteria
8 pg = 8*10^-15 kg
WL = ( 6.62607*10^9) /((8*10^-15)(9*10^-6))
WL = 9.20*10^28
this will be classical
B)
WL = ( 6.62607*10^9) /((39)(2.7))
WL = 62925641.0256 m
classical
c)
m = 1.2*10^-21 g = 1.2*10^-24 kg
v = 22 m/s
WL = ( 6.62607*10^9) /((1.2*10^-24)(22))
WL = 2.50*10^32 m
this will be classical
d)
m = 255 mg = 255*10^-6 kg
v = 8*10^-3 m/s
WL = ( 6.62607*10^9) /((255*10^-6)(8*10^-3))
WL= 3.24*10^15 m
this must be classical
Conclusion
as far as the planet constant decreases; most of phenomena will be modelled and structured with classical equations.
Answer:
You are right. The answer is 3P<em>i. </em>
Reason:
<em> In this problem all parameters are kept the same. Except of one thing. The only thing which is changing is the number of moles. If you look at the balanced chemical equation </em><em>1 mole of methanol </em><em>is producing </em><em>1 mole of carbon monoxide</em><em> and </em><em>2 moles of hydrogen gas</em><em>. </em>
<em>Hence, before reaction we have one mole of gas and after reaction completion we have three moles of product.</em>
<em>According to Ideal gas equation,</em>
<em>P V = n R T</em>
<em>V, R and T are constant hence.</em>
<em>P = n</em>
<em>Hence, three moles of gas will produce 3P.</em>
<em>Let me know if you need more assistance.</em>