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Calculate the maximum mass in grams of H2S that can form when 155 g aluminum sulfide reacts with excess water according to:Al2S3 + H2O => Al(OH)3 + H2S [unbalanced]
the two rarest non-radioactive elements are ruthenium and rhodium, each with an abundance of 1x10^-4 g/t. What is the total mass of each of these elements in the Earth's crust (1 t = 1000kg)?
From the time the mass of the flask is first measured until the time it is finally measured, it is handled a number of times with oily fingers. Does this lack of proper technique result in the molar mass of the vapor in the flask being reported as..
Calculate the pH of a solution prepared by mixing 0.0800 mol of chloroacetic acid plus 0.0400 mol of sodium chloroacetate in 1.04 L of water. (pKa of chloroacetic acid = 2.865.)
Draw the type of allylic carbons present in the following (draw structure) a. 2,3,3-trimethyl-1-butene b. 1-methylcyclohexane
The volume of HI(aq) required to reach the equivalence point : (c) The pH at the half-neutralization point. (d)The pH at the equivalence point.
3H2+N2=How many grams of NH3 can be produced from 3.91g of N2?
Using the volumes of sodium EDTA solution you just entered and the corresponding calcium carbonate masses entered earlier, calculate the molarity of the sodium EDTA solution for each trial.
how many grams of CaCl2 should be dissolved in 500.ml of water to make a 0.20m solution of CaCl2
The insecticide DDT has a half-life in the human body of about 7 years. That is, in 7 years its concentration.( Although DDT is no longer in use in the United States).
Difluoromethane gas (CHF2) was placed in a 5.0 litre cylinder at 1.3 bar at 25 C. What is the mass of CHF2
A human piece of pottery is dated 16750 years old by using carbon-14. how many half lives have passed since the pottery was made?
The solubility of MX2 is 8.91e-07 M. What is its Ksp to three sig figs? What is the molar solubility of M2X (Ksp = 1.38e-10)? M What is the concentration of M1+ in a saturated solution of M2X? M
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