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Determine the amount of heat (in kJ) given off when 1.89 104 g of ammonia are produced according to the following equation. Assume that the reaction takes place under standard-state conditions at 25.0°C.
N2(g) + 3 H2(g) → 2 NH3(g) ΔH°rxn = -92.6 kJ
Complete the following acid-base reactions. Write the net ionic form. Determine if the solution made by mixing equal amounts (moles) of these acids and bases will be acidic, basic or neutral. Explain, show relevant equations
How many unpaired electrons in the F22+ ion are based on molecular orbital theory? The order of the molecular orbitals are (σ2s)(σ*2s)(σ2p)(π2p)(π*2p)(σ*2p).
If the average human body discharges 925.0g CO2 per day, how many moles of NaOHare needed each day for each person in the spacecraft?( 42.04 mol NaOH)
Determine the volume, in mL, of 2.00 M HC2H3O2 required to prepare 100 mL of a 0.30 M HC2H3O2 solution?
Why don't we observe the deBroglie wavelength of everyday macroscopic objects (such as a moving car or a thrown baseball)? The wavelength is too small relative to the size of macroscopic objects to be observed.
Cobalt was used as an internal standard to analyze a sample of titanium with atomic absorption spectroscopy. A mixture was prepared by combining a 5.50 mL Ti solution of unknown concentration with 2.00 mL of a 13.4 g/mL solution of Co
What are most important organelles? Is How does biochemistry describe life processes? there a simple basis for classifying organisms?
Think back to what you learned in this course about solutions and intermolecular forces. Why don't these to "mix" together (in other words, make a homogenous solution) when combined. Why do they separate into layers
The pKa's of benzoic acid and 4-nitroanilinium hydrochloride are 4.2 and 1.0, respectively.
If the titrant has a molarity of 0.2750 M and there are 5.00 mL of analyte present, what is the molarity of the analyte
A solution has a volume of 2.0 L and contains 36.0 g of glucose. If the molar mass of glucose is 180 g/mol, what is the molarity of the solution
the effect of temperature on gases confined to small volumes. What is the pressure of 3.40mol of gas D measured at 251 C in a 1.75-L container assuming real behavior?
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