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A 1.84 g sample of an alkaline Earth metal hydride was treated with an excess of dilute hydrochloric acid, as well as the resulting gas was collected in a 1.000 L container at 20 c. The measured pressure of the gas was 750.0 mmHG.
A. Identify the alkaline Earth metal.
B. Write the formula for the metal hydride.
Calculate the pH at the equivalence point for the titration of .10 M NH3 by .10 M perchloric acid. pKb for NH3=4.74.
A gaseous mixture has a volume of 240L and a pressure of 1.35atm at 24*C. The mixture is 67% He and 33% Kr by mass. What is the mass of Kr
Two scientists are experimenting with pure samples of isotope X, a highly radioactive substance. The first scientist has a sample with a mass of 20 grams.
How many moles of Na3C6H5O7 can be produced if one tablet containing 0.0164 mol of NaHCO3 is dissolved?
Consider the following experimental data set obtained for the density of a metal object as measured by three students in the laboratory: 6.02g/mL, 6.04g/mL, and 6.05g/mL. The actual density of the object is known to be 5.00g/mL. Calculate the abso..
Consider the substitution reaction of H2S-BH3 with NH3, which generates two product molecules (ignore the states of matter), assuming that no species exceeds the octet rule. Given the following information:
Calculate the number of moles of ammonia absorbed by a boric acid solution if 3.25 ml of 0.0025 M H2SO4 were needed to titrate the solution to the end point ( Assume both hydrogens of the sulfuric acid react.)
The cyanide ion, CN-, binds to the iron that red blood cells use to carry oxygen around the body, therefore interfering with the blood's ability to deliver oxygen to the tissues. It is this toxicity that has made the use of sodium cyanide in gold ..
The Cl^- concentration in the water analysis given has been questioned. What concentration of Cl^- (mg/L) would make the cations and anions balance?
The copper(I) ion forms a chloride salt that has Ksp = 1.2 10-6. Copper(I) also forms a complex ion with Cl
How do you find the concentrations of the individual reactants that are part of the compounds? As far as the relative rate, I don't understand how to find m, n, and p in the equation: relative rate = k' (I-)^m(BrO3-)^n(H+)^p.
How much heat (in kJ) is evolved in converting 1.20 mol of steam at 134.0°C to ice at -55.0°C.
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