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The first four ionization energies of an element X are 0.58, 1.82, 2.74, and 11.58 MJ/mol. What is the most likely formula for a stable ion of X?
a. X-
b. X+
c. X2+
d. X3+
in photosynthesis, plants use energy from the sun in combination with carbon dioxide and water to form glucose (C6H12O6) and oxygen. If 4.50 moles of water react with carbon dioxide, what mass of glucose is produced?
When a 2.00-g sample of KSCN is dissolved in water in a calorimeter that has a total heat capacity of 1.083 kJ·K-1, the temperature decreases by 0.460 K.
how many moles of Ba(OH)2 are present in 165ml of 0.600M Ba(OH)2.
Using the ideal gas law, pV = RT, prove that the volume of one mole of ideal gas is a state function
A weak acid (HA) is found to ionize 17.8% when mixed at a concentration of 0.3 mol/L. What is the value of Ka for this acid?
Propose a mechanism for the addition of bromine and water to cyclopentene. Be sure to show how the trans product results
Light in a vacuum travels at a speed of 3.00x10^8 m s^-1. Pluto's average distance from the sun is 3.6 billon miles. How many minutes does it take sunlight to reach Pluto
For an acid-base reaction, what is the reacting species, that is, the ion or molecule that appears in the chemical equation, in the following acids?
A volume of 40.0 of a 0.220 solution is titrated with 0.600 . Calculate the volume of required to reach the equivalence point.
compound A (C10H18O2) is optically pure with an absolute configuration "S" at the stereocentre. The IR spectrum of A has no strong bands at 3400cm-1, a weak band at 3050cm-1, several strong bands from 2850 to 2950cm-1, a strong band at 1740cm-1 an..
Following is an example of a triprotic acid with pK values closer than 3 units, and pK3 less than 10. You have a 20.0 mL solution of the triprotic acid, H3A, with a concentration of 0.128 M, and are titrating it with a 0.250 M solution of NaOH.
how much heat does your body lose when 2.95g of sweat evaporates from your skin at 25 degrees Cecilius
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