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Conversion of molecules with C=C double bonds can be converted into molecules with a single C-C bond by addition of (reaction with) chlorine gas, Cl2(g). The balanced equation is shown below for reaction of ethylene with chlorine gas to make dichloroethane. Using the bond dissociation energy information provided in the equation, what is the enthalpy of this reaction as written, ΔHr, in kJ/mol?

A sample of oxygen occupies 47.2 liters under a pressure of 1240. torr at 25°C. What volume would it occupy at 25°C if the pressure were decreased to 730. torr?  (10pts)

Explain why you picked the answer above. 

Formulate the indicated conclusion in nontechnical terms. Be sure to address the original claim.An entomologist writes an article in a scientific journal which claims that fewer than 5 in ten thousand male fireflies are unable to produce light due to a genetic mutation. Assuming that a hypothesis test to support this claim has been conducted and that the conclusion is to reject the null hypothesis, state the conclusion in nontechnical terms.

What are the two half reactions for the following balanced redox chemical reaction: Ti4+(aq)  +  2 Co    →   Ti(s)  +  2 Co2+(aq)

You perform an experiment in a coffee cup calorimeter containing 100g of water and the temperature rises from 22.0°C to 44.7°C. How much energy, q, in Joules, is transferred from the reaction into the water (to the nearest whole number)? the specific heat capacity of water is 4.184 J/g.°C q = Cp . m . ΔT ΔT = q / (Cp . m) m = mass of the substance in grams

The American Colonization Society was influential in founding the nation of:

The balanced equation for the Haber reaction is shown below: If a Haber plant consumes 3 moles of hydrogen gas (H2) in the reaction, how many grams of ammonia will be produced? Assume that hydrogen is the limiting reagent. Assume the molecular  weight of NH3 is 17 g/mol

A patient suffers hypoxia and death after ingesting a toxin. You know that cellular respiration was impaired and wish to determine which step was affected. The table below shows the blood analysis results. Chemical Measured Value ATP – cytoplasm Normal ATP – mitochondrion Low Acetyl CoA High Glucose Normal Pyruvate Normal NADH Low NAD+ High FADH2 Low FAD+ High

Find the indicated probability. Round to three decimal places.A test consists of 10 true/false questions. To pass the test a student must answer at least 9 questions correctly. If a student guesses on each question, what is the probability that the student will pass the test?