At 326°C,1,3-butadiene dimerizes according to this equation: 2C₄H₆---->C₈H₁₂

In a given experiment, the initial pressure of 1,3-butadiene was 632.0 torr. Using the data table below, calculate the order of the reaction and the rate constant.

What is the initial concentration of Bleach if you used 5% in a Run where 2 mL's are used with 25 mL's of Dye?

Answer: 0.72 M

For this experiment, it is important to:

a) Make the concentration of Dye large compared to that of the Bleach
b) Make the temperature of all the runs the same
c) Change the activation energy for each trial
d) Change the temperature for each trial

This experiment consisted of:
- Phosphoric Acid 2 mL
- Methyl Anthranilate 0.21 mL
- Sodium Nitrite 0.399 g
- Diethyl Ether 3 mL
- Urea ~0.14 g
- Sodium Bicarb 1 mL

As well as sodium sulfate, but that was "as needed".

At the end, I had 0.05 g of the final product.

How do I begin to calculate the percent yield?

The enthalpy of reaction for HCN(aq) + OH^-(aq) -> CN^-(aq) + H₂O(l) is -12.1 kJ/mol. Assuming that the correct enthalpy of reaction of the experiment is -54.0 kJ/mol, calculate the enthalpy change for the ionization of HCN:

HCN(aq) -> H⁺(aq) + CN^-(aq)

Be sure to report your answer to the correct number of significant figures.

ΔH = ____ kJ/mol

why is neglecting to do a final rinse of the stirring rod with poluceman into the beaker containing the accumulated copper of error in the experiment. What would the effect of this error be on your mass of copper? what would the effect of this error be on the ratio of mol Cu or Mol Fe
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i cannot read the hand writing

A student was performing an experiment to demonstrate the photoelectric effect. When the student shined light from the source on the metal surface, no electrons were ejected. Which of the following could explain the observed result? Select one: a. The light intensity was insufficient. b. The energy of the light was too high. c. The frequency of the light was too low. d. The wavelength of the light was too short.

1. A machine is programmed to produce tennis balls so that the mean bounce is 36cm when the ball is dropped from a platform. An experiment is conducted using 35 tennis balls. The 5% level of significance is to be used to test the hypothesis. The sample mean was computed to be 35.5 cm and the standard deviation of the sample is 0.9 cm. Is there evidence that the sample mean is less than 36 cm?

You have purified genomic RNA from the following viruses: Zika, and murine leukemia viruses. You performed an experiment where susceptible, permissive cells were separately transfected with one pure molecule of viral RNA. Which RNA will lead to a productive viral infection? Discuss the reasons why one RNA succeeds and the other fails. Be clear and convincing

In ¹⁹F NMR spectroscopy, the F nuclei behave just like protons in ¹H NMR spectroscopy in that they have a nuclear spin quantum number of 1/2. How many ¹⁹F NMR resonances do you expect for PF₅? (Assume a static structure. In other words, the axial and equatorial do NOT rapidly scramble and change positions on the timescale of the NMR experiment.)

Lysine is an amino acid which has the following elemental composition: C, H, O, N. In one experiment, 3.263 g of lysine was combusted to produce 5.910 g of CO2 and 2.835 g of H2O. Separate analysis determined that lysine is 19.17% N. The molar mass of lysine is 150 g/mol. Determine the empirical and molecular formulas of lysine.