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In Mexico, avocados are 125 pesos per kilogram. What is the cost in cents of an avocado that weighs 0.45 lb if the exchange rate is 11 pesos to the dollar?
Consider the titration of 100.0 mL of 0.100 M H2NNH2 (Kb = 3.0 10-6) by 0.200 M HNO3. Calculate the pH of the resulting solution after 100.0 mL of HNO3 have been added.
In the Lewis structure of PCl3, how many bonds and how many lone pairs are on the central atom?
write the lewis symbol for hydrogen sulfide, distributing the remaining valence electrons so that the hydrogen atoms are in accordance with the duet rule and the sulfur atom is in accordance with the octet rule.
A proton that absorbs radio frequency radiation at higher field strength will appear ________ in a 1H NMR spectrum a.) at 0 ppm
Use Coulomb's law to calculate the ionization energy in kJ/mol of an atom composed of a proton and an electron separated by 272.00 pm.
The allowable concentration level of vinyl chloride,C2H3Cl , in the atmosphere in a chemical plant is 2.4×10-6 .How many moles of vinyl chloride in each liter does this represent? How many molecules per liter?
what elutes from the column when etc. Why do you think you use extraction techniques instead of chromatography?
What will be wavelength required for a baseball (mass = 149 g) traveling at a speed of 41.6 m/s
And what is difference between single electrode and full supercapacitor device results?
When 0.941 mol of gaseous HI is sealed in a 1.00-L flask at 225°C, it decomposes until the equilibrium amount of I2 present is 0.171 mol: 2HI(g) ? H2(g) + I2(g) Use these data to calculate Keq for this reaction at 225°C
The majority of industrial method for the preparation of elemental phosphorus is heating a mixture of phosphate rock, carbon, and sand in electric furnace. The chemical reactions can be represented by 2Ca3(PO4)2 + 6SiO2 ? 6CaSiO3 + P4O10 and P4O10..
The absorption coefficient of a new complex FeX2 (X=1,10 phenanthroline, MW = 180.21) was measured as 1,400 / M cm at 355 nm. what would be the measured absorbance at this wavelength
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