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A student measure 9.43 mL of an unknown liquid in a graduated cylinder. The mass of the empty cylinder is 34.670 g, and the mass of the cylinder and liquid is 44.197 g. What is the density of the unknown liquid? (remember significant figures and units in your answer)
what does the absorption spectrum of the ligand ethylenediamine look like in the visible region which you used in this
There are two properties of a chemical system that determine whether it can happen spontaneously, if the pressure and temperature don't change. These properties are
A buffer is prepared by mixing 675 mL of 0.50 M formic acid, HCHO2, and 325 mL of 0.50 M sodium formate, NaCHO2. Calculate the pH.
Draw all possible monochlorination products of 3,3-dimethylpentane, including stereoisomers.
Problem- When 20mL of a 120mL stock solution containing 1.2M CaCl2 is diluted to 80mL, how many moles of Ca2+ are in the new solution
a sample of gaseous neon atoms at atmospheric pressure and 0 c contains 2.601022 atoms per liter. the atomic radius of
hydrogen gas is produced when zinc reacts with sulfuric acidnbsp if 162 of wet is collected over water at 24 and a
Express the rate of the following reaction equation in terms of the rate of concentration change for each of the three species involved: 2NOCl (g) = 2NO (g) +Cl2 (g)
what is the mass in grams of 17.55ml of acetone? and what is the volume in milliter of 7.26g of acetone?
Draw appropriate Lewis structure and VSEPR structure for oxalate anion. What is the O-C-O bond angle? What is the C-C-O bond angle? What is the hybridization of each carbon? On which atoms does the negative charge reside? Draw all resonance struct..
What is the heat change in J associated with 15 g of solid ethanol at -177 oC changing to gas at 146 oC?
Calculate the resulting CO2 concentration in the atmosphere 30 years from now assuming that we will use only coal to generate electricity. Assume efficiencies of 40% for power plants.
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