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A researcher added 2.06g of the salt sodium nitrate, NaN0subscript 3, to a cylinder containing water. The cylinder diameter is 2 inches and the depth of the water in the cylinder is 4 inches. Determine the concentration of salt in the solution, showing your answer in mass %
exactly 1.000l each of hydrochloric acid and sodium hydroxide solutions are standardized as follows 0.7982g of dried
An end-centered orthorhombic unit cell has a cereal-box shape with atoms at each corner and on the face of two opposite ends. How many atoms are in a unit cell
Rank the following nitrogen compounds in order of decreasing oxidation number for nitrogen. Rank from highest to lowest oxidation states. N2,NO2,NO2-,NH3,NO^-3,NO
Zn (s) + 2 HCl (aq) = H2 (g) + ZnCl2 (aq) If 1.26 L of H2 gas are formed at STP, how many g of HCl reacted
Consider the reaction at 25C 2NO2 --> 2NO + O2 The overall rxn rate = k[NO2]2. The rate constant, k = 1.4 × 10?10 M?1 s?1. If 3.8 moles of NO2 are initially present in a sealed 1.00 liter vessel at 25 C, what is the half-life of the reaction
An aqueous solution of an unknown ruthenium salt is electrolyzed by a current of 2.50 A passing for 50.0 minutes. If 2.618 g Ru is produced at the cathode, what is the charge of the ruthenium ions in solution
The temperature of water decreases on the dissolution of NH4NO3. From this observation, we can conclude that the solution process would be best described as
Diccuss the difference between atomic packing factoe in terms of the angle between the unit cells. Specifically, let a be the angle between the unit cell of a general 2D lattice.
If 3.67 g of CO2 (MW = 44 g/mol) gas is introduced into an evacuated 3.58 L flask at 65 deg. C, what is the pressure inside the flask?
The procedure instructs you to use a stir bar to mix the solution while adding NaOH. Descirbe any differences in the graph
the molecules water and methane have similar masses but methane changes from a gas to a liquid at -161 degrees celsius.
a 100- lightbulb is placed in a cylinder equipped with a moveable piston. the lightbulb is turned on for 2.0times10-2
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