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If a 295 mL sealed container at 25 °C contains 0.80 g of a gas at 680 torr. Define what is the molar mass of the gas?
Calculate the density of aluminum, having a mass of 540 g and a volume of 200 cm3. .37 g/cm3, or 2.7 g/cm3, or 27 g/cm3, or 5.4 g/cm3
A 49 lb child is suuposed to receive 93 units/kg of heparin sodium by IV infusion every 4 hours. How many units will the child receive over the course of one day (round to the nearest unit).
How many moles of a reducing agent are used in a reaction containing 1.5L of this material which possesses a density of 0.8 and a molecular weight of 56
Calculate the potential of a hydrogen ( p= 1.02 atm) electrode in an aqueous solution of HBr (0.05 m ) at 298 K A) assuming ideal solute behavior. B) using the Deby- Huckel equation.
metallic iron has a bcc structure at 20 c and a density of 7.8 gcm3. what is the length of the side of the unit cell
The oxidation of nitrogen monoxide gas by molecular oxygen to form nitrogen dioxide gas is reversible and exothermic. Predict the effect of each of the following changes on the position of the equilibrium and a relative change in Kc.
consider the titration of 30.0 ml of 0.0300 m nh3nbspwith 0.0250 m hcla. calculate the ph after the following volumes
Express the concentration of a 0.0460 M aqueous solution of fluoride, F-, in mass percentage and in parts per million. Assume the density of the solution is 1.00g/mL.
Compute the number of mol of S represented by 1.810 x 10 -27 atoms of S, also determine the number of atoms of sulfur in 5.22 x 10 -7 kilograms of sulfur.
Discuss the behavior of tungsten trioxide (or molybdenum trioxide) and product(s)
a scuba diver with a lung capacity of 5.1 l inhales a lungful of air at a depth of 44 m and a pressure of 5.4 atm.if
a. what is the ph of a solution containing 0.2 m acetic acid pka 4.7 and 0.1 m sodium acetate?b. you have just made a
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