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?

An isotope of mercury has 80 protons and 120 neutrons. whatis the mass number

Zinc citrate is an ingredient in toothpaste. It is synthesis by the reaction of zinc carbonate with citric acid. Water and Carson dioxide are also produced

Where is the least amount of energy transferred in a food web? Group of answer choices From primary consumer to secondary consumer From secondary consumer to primary consumer From secondary consumer to producer From producer to secondary consumer

If we were to classify the pure substance represented by the lewis dot structure seen here, we would classify it as a (n)

What is a keyboard and types of jet board

What is the root mean square of carbon iv oxide at 27°C?

If maltose undergoes hydrolysis what subunits does it results to?

Find the total mass of three diamonds that have masses of 14.2 grams, 8.73 grams, and 0.912 gram

What is the correct equilibrium constant expression for this equation? 2C0F, (g) CO2 (g) + CF_ (g)

Write the mathematical expression that allows you to solve for the oh - concentration in water when you know only the h3o + concentration.