[Frederick95]

Let me rewrite the question in a neat order

The question was:
Calculate the change in hydrogen peroxide concentration per second.  This is the rate.  (Hint:  What volume of liquid does the hydrogen peroxide now occupy?).

The reaction was:   
Reaction   Volume of 6% H2O2 (mL) 8.0
Volume of distilled water (mL) 2.0
Volume of 1.0 M NaI (mL) 10.0
Volume of distilled water (mL) 0.0   
O2 production in 60 s (mL) 93.0

2 H2O2 --> 2 H2O + O2

Since you have helped me solve mass for H2O2, I can now find number of moles for H2O2 by using finding molarity.

Molarity = moles of solute (H2O2) / litres of solution (0.01 L)

gives me value of M

but what is next?

[diplomat65]

To Frederick, please i need some help with this rates lab

Thank you

I appreciate it

[Frederick95]

The results of this discussion are incorrect

[diplomat65]

please someone, i need some help with the rates lab

thank you very much

[mo_1984]

Sorry Arkcon, I forgot
Since 1ml=1cm3

        151 mL = 151 cm^3

I beleive I now rearrange the Ideal Gas Law to find # of mols?

n = PV / RT

  =(102.6 kPa)(151 cm^3) / (8.3145 J/mol K)(290 K)

  = 15492.6 / 2411.205

  = 6.4 mols

 

where did u get 8.3145 j/mol k from???