Organic Chemistry Answers

A solution containing 80.0 grams of glucose (C₆H₁₂O₆) is dissolved in enough water to make 250 mL of solution. What is its molarity?

You want to create a 0.25 M KCl solution using 5.00 grams of Potassium Chloride. How much water is needed?

Calculate the concentration of sodium chloride present in mass % for a solution of 45 g of salt in 1200 mL of water.

The density of water is 1.00 g/mL.

Quantum numbers are always in the order n,l,ml, ms. Which of the following quantum numbers is likely NOT to occur and why?

A. 0,2,3,4 because the principal quantum number belongs to natural numbers

B. 2,1,-2,+1/2 because the spin quantum number ranges from -l to l

C. 3,2,1,-1/2/ beacuse the magnetic quantum number is always negative

D.4,3,-4,+-1/2 because the azimuthal quantum number is always a fraction.

The electronic configuration of an atom's valence shell is ns2np2. During the titration of a CuCl2 with conc. H2SO4(0.1M) acid and a suitable indicator was used such that PH(y) of the HCl was 1.500. What is the period to which the element belongs with respect to the fact that y= -log(10+10n/2)

When solutions of barium Chloride and sodium sulphate are mixed, the spectator ions in the resulting reaction are?

ALuminum sulphide is produced from a reaction of the elements Al and S according to the reaction 2Al(s) + 3S(g) → Al2S3 . Given that the mass of aluminum is defined by a function mA such that t(mAl) = [ mAl 4.1

41/10 mAl ] and that t( mAl ) is a singular matrix. The mass of sulphur that reacted was equivalent to the POH of 3.981 x 10-7M solution of a base. What is the mass of the product formed?

A. 10.41g B. 102.6g C. 25.2g D. 40.5g