posted by .

Student A ran all her standards through the AAS at a specified C2H2/air flow rate. Just before she was to run her Cu sample, Student B turned down the flow rae of C2H2, thus lowering the flame temperature. Would students' A results of Cu in their sample be high, low or unaffected? Explain your answer.

  • chemistry -

    I presume AAS stands for atomic absorption spectrophotometry.
    If the T of the burner goes down (enough), there will be fewer atoms vaporized and fewer atoms available to absorb the energy being transmitted by the light source. Less energy will be absorbed, absorbance will be less and %Cu will be less.

  • chemistry -

    Yes the AAS is atomic absorption spectrophotometry. Also thank you for your explanation.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. organic chemistry

    1. Student A conducted the dehydration of ethanol at 180 °C and obtained a gaseous product. Student B conducted the same experiment at 140 °C and obtained a low- boiling liquid. What were the products that each of the students made?
  2. Chemistry

    If 10.00 g of C2H2 is mixed with 80.0 g of Br2, what masses of C2H2Br2 and C2H2Br4 will be formed?
  3. chemistry

    If 10 g of C2H2 is mixed with 80 g of Br2, what masses of c2h2br2 and c2h2br4 will be formed?
  4. Chemistry

    What is the mass of a sample of acetylene gas (C2H2)that contains 4.44 x 1034 atoms of carbon?
  5. Chemistry

    Calculate how much acetylene (C2H2) can be produced from 358 g of H20 and an excess of CaC2 if the perfect yield for this reaction is 94.5% CaC2+H2)-> C2H2+C2H2+CA(OH)2
  6. Chemistry

    Acetylene(C2H2) torches are used in welding. How much heat (in kJ) evolves when 2.0L of C2H2 (d=1.0967kg/m3) is mixed with a stoichiometric amount of oxygen gas?
  7. Chemistry

    Please also, help me set up this problem. Acetylene, C2H2, can be converted to ethane, C2H6, by a process known as hydrogenation. The reaction is C2H2(g)+2H2(g)⇌C2H6(g). Given the following data at standard conditions (all pressures …
  8. physics

    A student, late for class, ran up some stairs between landings, which are 11.3 m apart. The student’s mass is 62 kg and it took 6.02 s to do the run. What is the average power that the student generated during the run?
  9. Medical physics

    1.A hypodermic needle of lenght 0.020m and inner radius 3.0 x10^-4 is used to force water at 20 degree celcious into the air at a flow rate of 1.0 x10^-7m^2 s-1 (a) what is the average velocity in the needle?
  10. Chemistry

    Oxyacetylene torches are fueled by the combustion of acetylene, C2H2. 2C2H2(g) + 5O2(g) --> 4 CO2(g) + 2H2O(g) If the enthalpy change for the reaction is -2511.14 kJ/molrxn, how much heat can be produced by the reaction of a. 2mol …

More Similar Questions