A specific steroid has λmax = 259 nm and molar absorptivity ε = 11,500 l mol-1 cm-1. what is the concentration of the compound in a solution whose absorbance at 259 nm is a = 0.065 with a sample pathlength of 1.00 cm?

he equation represents the combustion of sucrose. C12H22O11 + 12O2 12CO2 + 11H2O If there are 10.0 g of sucrose and 8.0 g of oxygen, how many moles of sucrose are available for this reaction?

Forms from coal, oil. and gas burning

One of the negative aspects of using nuclear power as an alternative energy source is A) it pollutes the air. B) finding a fuel source. C) the disposal of byproducts. D) it does not produce much energy.

A participant took 5.2 hours to complete a marathon. How many minutes did the participant take to complete the marathon? Use 1 hour = 60 minutes 11.5 minutes 33.8 minutes 312 minutes 322 minutes

Calculate the mass percent of copper in cus, copper (ii) sulfide. if you wish to obtain 10.0g of copper metal from copper (ii) sulfide, what mass of cus (in grams) must you use?

Is a mixture being separated into two elements a chemical change

Which electrons are lost by an atom of iron when it forms the Fe3 + ion? A. One s orbital electron and two d orbital electrons B. Two s orbital electrons and one d orbital electron C. Three s orbital electrons D. Three d orbital electrons

What does a three letter chemical symbol mean

When 21.6 g of carbon were burned in the presence of 73.7 g of oxygen, 16.1 g of oxygen remained unreacted. What mass of carbon dioxide was produced?

How do you go from 2 mol of co2 to _ mol of c