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The mineral greenockite is a rare yellow sulfide of cadmium that is 78.0% cadmium and 22.0% sulfur by mass. Determine the empirical formula of greenockite.
Maleic acid is used to retard the breakdown of fats. Imagine that you prepared a buffer by adding 14.35 millimoles of maleic acid and 20.57 millimoles of sodium hydrogen maleate to a 250.0mL volumetric flask
oxygen molecules absorb uv radiation of wavelength less than and equal to 242 nm calculate the frequency and energy of the least energitic of these photons.
Reactions within equations and properties of acidity, A reaction occurs for each of the following below. How do you differentiate between the different driving forces? (a driving force can either be the transfer of electrons; the formation of a pr..
What is the reduction half-reaction for the following overall cell reaction? Pb 2+(aq) + 2 Ag(s) ? Pb(s) + 2 Ag+(aq) Choose one: Pb 2+(aq) + 2 e- ? Pb(s) Ag(s) + e- ? Ag+(aq) Pb 2+(aq) + e- ? Pb(s) Ag+(aq) + e- ? Ag(s)
The very dense metal iridium has a face-centered cubic unit cell and a density of 22.56 g/cm3. Use this information to calculate the radius of an atom of the element.
An intermediate reaction used in the production of nitrogen containing fertilizers is that b/w NH3 and O24NH3(g) + 5O2(g)--> 4NO(g) + 6H2O(g)
Tell whether each of the experimental errors in excercise will affect the melting point of the unknown component.
A 1.800 g sample of octane, C8H18, was burned in a bomb calorimeter whose total heat capacity is 11.66 kJ/°C. The temperature of the calorimeter plus contents increased from 20.01°C to 29.99°C. What is the heat of combustion per gram of octane?
An analyst was attempting to determine the percent KHP in an unknown sample. The analyst found the molarity of the standardized NaOH solution to be 0.1022 mol/L.
Br2 and ICl have similar molecular weights which compund has a higher boiling point specifically expalin your answer
which of the following statements about colligative properties of solutions is false?1. the higher the concentration of
Octane (C8H18) undergoes combustion according to the following thermochemical equation: 2C8H18(l) + 25O2(g) ? 16CO2(g) + 18H2O(l) ?H°rxn = -11,020 kJ/mol. Given that ?H°f[CO2(g)] = -393.5 kJ/mol
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