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Hydrogen gas is generated when acids come into contact with certainmetals. When excess hydrochloric acid reactss with 2.5 g of Zn (themetal product is Zn2+ ), what volume of hydrogen gas is collected at a pressure of 0.93 atm and a temperature of 22oC?
Using the accepted ionic radius of the ammonium ion, NH4+, NH4Br is predicted to have a rock-salt structure with (6,6)-coordination. However, at room temperature NH4Br has a cesium-chloride structure. Explain this observation.
of the metal ions we tested in the flame, sodium gave the brightest and most persistent color. Do you think that if a mixture of potassium and sodium were burned in a flame, the gross color of potassium could be detected in the presence of sodium
Given the reaction 4Al(s) + 3O2(g) --> 2Al2O3(s), what is the minimum number of moles of oxygen gas required to produce 1.00 mole of aluminum oxide?
a common laboratory reaction is the neutralization of an acid with a base. when 60.0 ml of 0.25 m nitric at 24.5 degree
How do we know the oxidation of camphor leads to a different product if they look/smell the same in the end as it did in the beginning?
Is there a list of hazardous or safe chemicals for Thailand? Where can I find it?
a weather balloon holding 22l of gas is released at a pressure of 103kpa and a temp. of 15c. what is the temp. at 10km
Consider the process of combustion, of complete oxidation -- that is, reaction with oxygen resulting in the conversion of every carbon atom to CO2.
Sodium sulfate is slowly added to a solution containing 0.0500 M Ca2 (aq) and 0.0240 M Ag (aq). What will be the concentration of Ca2 (aq) when Ag2SO4(s) begins to precipitate. What percentage of the Ca2 (aq) can be separated from the Ag (aq) by s..
protein a has a binding site for glucose with a kd of 10-5m.protein b has a binding site for glucose with a kd of 10-7
Calculate the pH of an KOH solution if 56.4 mL of KOH soultion is titrated with a 0.875 M HCl and it took 15.6 mL of the HCl to reach the equivalence point.
What is the pH at the equivalence point. f) What indicator would be most suitable for this titration. g) What is the pH when 105% of the required base has been added
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