Calculate the concentration of the original protein This comes from Beer's Law: A = εcl, where A is the absorbance, ε is the extinction coefficient, c is the concentration, and l is the path length. …

The transmittance for a sample of a solution, measured at #590nm# in a #1.5-cm# cuvette, was #76.2%#. What is the corresponding absorbance? How to get new concentration from percent …

How do you use quadratic formula to solve #2x^2 + 4x + 2 = 0#? How do you use the quadratic formula to solve #x^2+5=4x#? A rectangle has a perimeter if 46 cm and an area of 120 cm^2. …

Jan 7, 2018 · The subscript in the chemical formula represents how many such atom there are....for #H_2O#, there are 2 hydrogen atoms, and 1 oxygen in the molecule. For #C_2H_6#, …

How do you identify the compound with IR spectrum with a molecular formula #C_5H_8O#? How would you distinguish between ortho and para nitrophenol using infrared spectroscopy? Given …

How do you use Heron's formula to find the area of a triangle with sides of lengths #15 #, #16 #, and #12 #? How do you use Heron's formula to find the area of a triangle with sides of lengths …

Explanation: Since the problem gives us the explicit formula, we can simply plug in the values for n: For #a_1#, we know #n=1#, so: #a_1= (-1)^1/ (1)^2=-1# For #a_2#, we know #n=2#, so: …

Changes in state are physical changes. Let's take water as an example. H2O. In the gaseous state, we sometimes call it steam or water vapor; it's chemical formula is still H2O. In the liquid …

Apr 23, 2018 · Your unknown gas is ethane and its molecular formula is C_2H_6. So, you know that you're dealing with a hydrocarbon, which is a compound that contains only carbon and …

y=2x+1 Don't worry. This is easy to understand once you have the formulas. We know the equation of a line is y=mx+b Where m is the slope and b is the y-intercept First, we need to …