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The combustion of 8.0 g of methane in the presence of excess oxygen produces 19.5 g of carbon dioxide. What is the limiting reactant?
Given the following equation. What is the maximum mass of FeO3 that can be prepared when 360.0g of FeS2 are mixed with 47.5g of oxygen gas? A balanced equation is this: 4 FeS2 (s) + 11 O2 (g) ----> 2 Fe2O3 (s) + 8 SO2 (g)
How is the rate of disappearance of ozone related to the rate of appearance of oxygen in the following equation: 2 O3 (g) ? 3 O2 (g) (rate expression)
What is the balanced equation for a reaction between potassium iodide and lead II chloride
An object weighs 1.2 pounds and has a volume of 14.6 in squared. What is the density of the object. Express the answer in g/mL
450 L sample of a gaseous compound at 72.5 cm of hg pressure and at 1.00*10^2 has a mass of 1.86 g. what is the molecular weight of the compound
Assume that the volume remains constant when the base is added. when the reaction is complete, what is the concentration ratio of conjugate base to acid. How many moles of strong base were initially added
In lab a student titrates 50.00mL of an unknown monoprotic weak acid with 35.5mL of .9500M NaOH to reach the equivalence point of the titration. What volume of NaOH was delivered to reach the midpoint in this titration
the atomic masses of 6Li and 7 Li are 6.0151 amu and 7.0160 amu. Calculate the neutral abundance of each isotope. The average atomic mass of Li is 6.941 amu
A cylindrical gas chamber has a piston at one end that can be used to compress or expand the gas. If the gas is initially at 928.1 Torr and when the volume is 7.351 L, what will the pressure be in mmHg if the volume is adjusted to 3.570 L
Calculate the boiling point of a solution prepared by dissolving 70.0 g of naphthalene, C10H8 (a nonvolatile nonelectrolyte), in 220.0 g of benzene, C6H6. The Kb for benzene = 2.53°C/m. The boiling point of pure benzene is 80.1°C.
72.0 mL of a 1.60 M solution is diluted to a volume of 268 mL. A 134-mL portion of that solution is diluted using 139 mL of water.
It is important that the flask used for molar mass determination is completly dry before adding volatile liquid unknown to it.why? what would happen to any droplets of wash-water remaining in the flask when the temperature of the flask is raised t..
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