1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
irakobra [83]
3 years ago
11

Consider the equation: 2 nan3 (s) 2 na (s) + 3 n2. what is the mass of nan3 needed to produce 17.2 l nitrogen at stp?

Chemistry
1 answer:
Lerok [7]3 years ago
3 0
The  mass  of NaN3  needed  to produce 17.2  L  nitrogen   at  STP is  calculated as  follows

find the  moles of N2   produced  at  STP
At  STP  1mole  of  gas =  22.4  L ,  what about  17.2 L  of  nitrogen

by cross  multiplication

= (1 mole x17.2  L)/ 22.4 L= 0.768  moles

2NaN3 =2Na  +3 N2
by   use of  mole ratio  between NaN3  to N2  (2:3) the  moles  of NaN3  =  0.768  x2/3 =  0.512  moles  of NaN3

mass of NaN3  is therefore =moles of NaN3  xmolar  mass of NaN3

=0.512moles  x 65 g/mol =33.28 grams  of NaN3



You might be interested in
Why is oxygen an element ? a it is essential to life b it burn c it combines with hydrogen d it cannot be broken down into a sim
MrRa [10]
D.) It cannot be broken down into a simple substance through chemical means...
5 0
2 years ago
Read 2 more answers
What happens when organisms decompose, what happens to carbon
butalik [34]
They can grow fungus and they emit carbon
5 0
3 years ago
Calculate the ph of a 0.60 m h2so3, solution that has the stepwise dissociation constants ka1 = 1.5 × 10-2 and 1.82 1.06 1.02 2.
Vsevolod [243]
Missing in your question Ka2 =6.3x10^-8
From this reaction:
 H2SO3 + H2O ↔ H3O+  + HSO3-
by using the ICE table :
                H2SO3     ↔    H3O     +    HSO3- 
intial         0.6                     0                  0
change     -X                      +X                +X
Equ         (0.6-X)                  X                   X

when Ka1 = [H3O+][HSO3-]/[H2SO3]
So by substitution:
1.5X10^-2 = (X*X) / (0.6-X) by solving this equation for X
∴ X = 0.088
∴[H2SO3] = 0.6 - 0.088 = 0.512
[HSO3-] = [H3O+] = 0.088

by using the ICE table 2:
                 HSO3-     ↔   H3O     +     SO3-
initial        0.088              0.088              0
change    -X                      +X                   +X
Equ         (0.088-X)          (0.088+X)          X

Ka2= [H3O+] [SO3-] / [HSO3-]
we can assume [HSO3-] =  0.088 as the value of Ka2 is very small
 6.3x10^-8 = (0.088+X)*X / 0.088
X^2 +0.088 X - 5.5x10^-9= 0 by solving this equation for X
∴X= 6.3x10^-8
∴[H3O+] = 0.088 + 6.3x10^-8
               = 0.088 m ( because X is so small)
∴PH= -㏒[H3O+]
       = -㏒ 0.088 = 1.06 
5 0
3 years ago
Read 2 more answers
Which of the following groups of materials would
Nikitich [7]
The wrong answers for sure are B and D, I assume the answer is C
4 0
3 years ago
Read 2 more answers
What happens when an electron moves from n=2 to n=5?
Aleksandr-060686 [28]

Answer:

Explanation:

10?

4 0
2 years ago
Other questions:
  • In the following reaction: HCO3- (aq) + H2O (aq) → H2CO3 (aq) + OH- (aq)
    11·1 answer
  • A layer of sediment goes through a series of steps on its way to becoming sedimentary rock. These steps are summarized below. Re
    11·2 answers
  • Relative dating is used to arrange geological events, and the rocks they leave behind, in a sequence. The method of reading the
    10·1 answer
  • What pressure will be exerted by 0.57 moles of CO2 at a temperature of 25°C and a volume of 500 ML? _____atm
    15·1 answer
  • Disintegration is the word geologists use forA.When a rock becomes moist.B.When rock is physically broken into smaller pieces.C.
    10·1 answer
  • Un elemento tiene 3 orbítales desapareados y presenta 3 niveles de
    6·2 answers
  • 1. Why is soil erosion relatively less in dense forests as compared to barren, open fields?
    8·2 answers
  • All of the following are landforms that can contribute to climate EXCEPT
    9·1 answer
  • Which family contains neither metals nor non-metals
    8·2 answers
  • For the oxidation of ammonia
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!