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The element antimony has an atomic weight of 121.757 amu and only two naturally occuring isotopes. one isotope has an abundance of 57.3 % and an isotopic mass of 120.904 amu based on these data what is the mass of the other isotope.?
Running a TLC of Unknown Compound X using eluent hexane:ethyl acetate 4:1. The Rf of the unknown is too close to the baseline. What should I do?
The pH after adding 5.0mL, 10.0mL, 15.0mL, 20.0mL (keeps increasing by 5)... 50mL of KOH aqueous solution to the 50.0 mL sample of the HF solution.
A liquid begins to appear on the inside of a closed flask. At first glance before the liquid began to appear, you might have thought the flask was empty
If 26 of 6.6 was spilled, what is the minimum mass of that must be added to the spill to neutralize the acid?
Aluminum sulphate is used in sand paper, among other uses. How many g of aluminum oxide dihydrate will be needed to produce 500 g of aluminum sulphate by the (unbalanced) reaction below? Al2O3 •2H2O + H2SO4 Al2(SO4)3 + H2O
The products of the fastest inactivation process are as explain the mechanism is accountable for the making of the products.
Calculate the partial pressure of ozone and the number of ozone molecules per liter of air if the tempreture and pressure were 20.0 degrees C and 758 mmHg, respectively.
Consider the reaction when aqueous solutions of sodium acetate and potassium sulfide are combined.
An optimization from a particular starting structure of a compound C5H10O2 leads to an energy of 25.12 KJ/mol.
if carbon atoms started out neutral but ended up partially charged. did they gain electrons. lose them. is the carbon being reduced or oxidized?
An unknown compound X, is thought to have a carboxyl group with a pka of 2.0 and another ionizable group with a pka between 5 and 8. When 75 ml of 0.1 M NaOH was added to 100 ml of a 0.1 m solution of X at pH 2.0, the pH increased to 6.72.
a solution of ammonia and water contains 4.00×1025 water molecules and 8.20×1024 ammonia molecules. How many total hydrogen atoms are in this solution?
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