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The atomic mass of element X is 29.42 amu. A 33.22 g sample of X combines with 92.10 g of another element, Y to form a compound XY, Calculate the atomic mass of Y.
t 50°C the value of KW is 5.5 x 10-14. What are the molarities of hydronium ion and hydroxide ions in a neutral solution at this temperature.
If 32.36 mL of 0.05984 M Cr2O72- is required to titrate 27.91 g plasma, what is the mass percent of alcohol in the blood?
vaporization of water into air in a wetted-wall column the following data were obtained tube diameter 1.46 cm
Calculate the temperature change which will be caused by the following process: 0.640 moles of NH4Cl are dissolved in 1.00 L of water.
In a butane lighter, 9.8 of butane combines with 35.1 of oxygen to form 29.6 carbon dioxide and how many grams of water.
A diet soda contains 0.5% sodium, 0.25% potassium and 0.6% aspartame. Can you please show me how to calculate how many grams of each you would consume by drinking a 300 mL can of soda.
Given the initial rate data for the reaction A+B->C, determine the rate expression for the reaction. [A], M [B], M delta[C]/delta t (initial) M/s
Calculate the concentrations of all species in a 0.790 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
Mg3N2(s) + H2O(l) → Mg(OH)2(s) + NH3(g) If this process is 82% efficient, what mass of ammonia can be prepared from 22.0 kg magnesium nitride.
If the average number of drops/ml = 73.0 and the overall average diameter of oleic acid film = 38.0 cm, what would be the calculations for the following:
A rate constant obeys the Arrehnius equation, the factor A being 2.2 * 10^13 s-1 and the activation energy being 150 kj mol -1. What is the rate constant at 227 C, in s-1
Like sulfuric Acid, a certain diprotic acid, H2A, is a strong acid in its first deprotonation and a weak acid in its second deprotonation. A solution that is 0.020 M H2A (aq) has a pH of 1.66. What is the value of Ka2 for this acid
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