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The water at the gas-collecting port is assumed to be 25 degrees C, but it is actually 15 degrees C. How will this error affect the reported mass of aluminum in the sample?
This comes from an Aluminum Analysis lab in which hydrogen gas resulting from the reaction between aluminum and 6M HCl is collected over water.
What is the atomic mass of Tc as it would appear in the periodic table. Do not enter units with your answer and use the correct number of significant figures.
The specific heat capacity of silver is 0.24 J/°C · g. Calculate the energy required to raise the temperature of 120.0 g Ag from 273 K to 305 K
what is the molarity of HCl in a solution prepaired by dissolving 18.25 gm HCl in 200 gm ethanol, if the density of solution is 0.86 gm per mm
Determine whether sodium monohydrogen phosphate (Na2HPO4) is neutral, basic, or acidic. First, what is its Ka when it acts as an acid? Second, what is its Kb when it acts as a base?
The atmospheric oxidation of nitrogen monoxide, 2 NO(g) +O2(g) 2NO2(g), was studied at some temperature withinitial pressures of 1.000 atm of NO and 1.000 atm ofO2. A tequilibrium PO2=.506 atm calculate Kp 2NO(g)+O2(g) 2NO2(g)
The vapor pressure of a liquid is the pressure exerted by its vapor when the liquid and vapor states are in equilibrium. The relationship between vapor pressure and temperature is expressed by the Clausius-Clapeyron equation.
Calcium sulfide has a face-centered cubic unit cell with calcium ions in octahedral holes. If the radius of sulfide ion is 184pm and the density of CaS is 2.60 g/cm3.
A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 550 mL of a solution that has a concentration of Na+ ions of 0.600 M
What is the equilibrium concentration of hydronium ion in a solution that is 0.0877 M in HX and 0.240 M in X1- ion?
What mass of calcium can be produced by this process if a current of 5900 A is applied for 55 h? Assume that the electrolytic cell is 60 % efficient.
why must one half reaction in the table of standard reduction potentials be arbitrarily assigned a value of 0 volts? why were not all of the half cell potentials
Organic chemistry mechanism and conceptual problems involving, Write equations to show how nitronium ions might be formed using a mixture of nitric and sulfuric acids.
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