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A sample of molten iron occupies a volume of 7.11 x 10-3 L. If the density of iron is 7.86 g/cm3, what is the mass of iron in grams in the sample?
A student standardized her I2 solution by preparing a solution of 0.0450 g of ascorbic acid (vitamin C) in a 100 mL volumetric flask. She titrated several 10.00 mL samples of the Vitamin C solution and found an average of 24.95 mL of I2 solution
an aqueous CaCl2 solution has a vapor pressure of 81.1 mmHg at 50 C. The vapor pressure of pure water at this temperature is 92.6 mmHg.
In an experiment that is performed you use 1-hexene and is reacted with H2SO4 with water as the solvent. The product formed is 2-hexanol, is this an example of 1,4 addition, or proceeds via a carbanion,
when 7.50 g of magnesium reacts with 9.50 g hydrochloric acid, hydrogen gas is formed. what is the limiting reagent?
The standard cell potential of the zinc-air battery is 1.65V. If at 25 dgrees celsius the partial pressure of oxygen in the air diffusing through its cathode is 0.21 atm.
The reactant concentration in a zero-order reaction was 7.00×10-2 after 105 and 1.50×10-2 after 350 . What is the rate constant for this reaction.
The dipole moment, meu, of HBr (a polar covalent molecule) is 0.82 D (debye), and its percent ionic character is 12.1%. Estimate the bond length of the H-Br bond in picometers.
Again, are all of the (non-zero) formal charges consistent with the relative EN's of the atoms? Are the structures reasonable?
When 10.0 g of NH3 reacts, the actual yield of N2 is 8.50 g. What is the percent yield?
A mass of 2.50 g of hydrated copper(II) sulfate is placed in a crucible and heated. On heating, 1.59 g of white anhydrous copper(II) sulfate is left behind. Determine the ratio of water to copper(II) sulfate.
Bromine addition to trans-cinnamic acid, During bromine addition to trans-cinnamic acid, why is it necessary to maintain excess bromine in the reaction mixture
Calculate the equilibrium constant for the reaction that occurs when nitric acid is added to the buffer HA
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