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If a mixture of gases contained 78% nitrogen at a preasure of and 22% carbon dioxide at , what is the total preasure of the system
Define three carbon atoms bear the unpaired electron, The pentadienyl radical, CH2=CH-CH=CH-CH2, has its unpaired electrons delocalized over three carbon atoms
Which of the following set of quantum numbers (ordered n, \ell, m_{\ell}, m_s) are possible for an electron in an atom
calculate concentration of chromate ion (CrO4) in a 0450 M solution of chromic acid (H2CrO4). (for chromic acid, Ka = .18, Ka2 = 3.2 x 10E-7)
What is the formula for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen
What is the mechanism of 1-6-diaminohexane/sodium hydroxide with 2% sebacoul chloride (decanedioyl chloride)/hexane?
How many grams of formic acid, HCOOH, must be added to 0.300 L of 0.190 M sodium formate, HCOONa, to yield a buffer solution with a pH of 4.00? Assume no volume change. Ka of HCOOH = 5.0 10-4.
The activation energy of an uncatalyzed reaction is 89 kJ/mol. The addition of a catalyst lowers the activation energy to 57 kJ/mol.
calculate the enthalpy change for an isobraic change of steam from 0.8 MPa and 250 C to saturated liquid
What is the PH of .0750L of hypochlorous acid/hypochlorite buffer solution, originally .300M in HCLO and .400M in CLO-. after 7.5E-3 moles of NAOH have been added to the buffer
Cesium-131 is a short lived radioisotope (t 1/2 = 9.7 days) used to treat prostate cancer. How much therapeutic strength does a cesium-131 source lose over 45.0 days?
Give the formula for an ionic compound formed from the following pairs of ions. Tip: Use the Xy button to subscript the numbers.
Draw a complete lewis structure that shows all bonds, unshared electron pairs, and minimized formal charges where appropriate.
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