Your labmate acquires a spectrum of an aqueous solution containing the analyte with an empty reference compartment. you acquire a spectrum of the same solution using a matched quartz cuvette containing water in the reference compartment.
do you expect the maximum absorbance in your labmate’s spectrum to be greater than, equal to or less than the maximum absorbance in the spectrum which you acquired?
justify your answer using appropriate calculations. (you may assume both you and your labmate will use the same double beam uv spectrometer.)
circle one - the absorbance i measure will be (greater than, equal to or less than) the absorbance measured by my labmate.
explain and justify your answer.

- decrease the number of plants and animals living in the water.

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2