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Upon reaction with excess sulfamic acid, HSO3NH2, a 0.121g sample of a mixture of sodium nitrite, NaNO2, and sodium chloride, NaCl, produced 28.3 mL of nitrogen gas collected over water at 25.3 degrees Celsius and at a barometric pressure of 738 mmHg. Determine the percent by mass of NaNO2 in the original sample. Show clearly your calculations and reasoning.
How much work would have been done if the gas were ideal? Account for the differences the two values.
Application of the concepts of VSEPR theory leads us to conclude that the shape of the SO3 molecule is
Calculate the mass (g) of SrSO4 that will dissolve in 900 mL of 0.00253 M SrCl2 solution. The equation represents the solubility process.
How do you draw Mg and connect with bonds. Include all lone pairs of electrons and nonbonding electrons and show the charge of the atom.
A hot tub is filled with 470 gallons of water, which has a density of 1.0. How many kilocalories are needed to heat the water from 67 to 109?
The mass of the crucible, cover and sample of Ti was 36.383 g. Following the reaction of the Ti metal with Oxygen, the contents of the crucible, cover and reaction mixture was heated to a constant mass of 37.472 g. Determine the mass of the oxide ..
Draw the phase diagram of water and put a on the phase diagram to show the pressure and temperature conditions in the day and at night on the moon.
calculate the pH a solution that contains 0.800% C5H5N by mass and 0.815% C5H5NHCl by mass
Complete and balance the following if a reaction occurs. Write your answer as net ionic equation and include physical states of all compounds (including for water).
How many inner, outer, and valence electrons are present in an atom of each of the following elements
The density of an unknown metal is 2.64 and its atomic radius is 0.215 . It has a face-centered cubic lattice.Find the atomic weight of this metal.
Why is this a reasonable assumption for those products, but not for cyclohexane and toluene?
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