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Compute (a) mass of CuSO4 in 2.26 g of CuSO4*5H2O. (b) Define how many grams of this compound are there in 250mL of 0.075 M solution?
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5.
Which is the equivalence-point pH if 25.0 mL HCOOH (1.8 x 10-4) requires 29.80 mL 0.3567 M NaOH to reach the equivalence point?
A sample of gas (24.2 g) initially at 4.00 bar was compressed from 8.00 L to 2.00 L at constant temperature. After the compression, the gas pressure was ________ bar.
Write ionic and net ionic equations to show how limestone reacts with HNO3 and H2SO4 to neutralize them. How would you be able to tell if the neutralization process was working
Several compounds containing merely sulfur (S) and fluorine (F) are known. Three of them have the subsequent compositions. Explain how do these data illustrate the law of multiple proportions
gas tank holds 42kg of gasoline. when gasoline burns 147kg og oxygen are consumed and carbon dioxide and water are
Draw all stereoisomers of 2-bromo-4-methylpentane. Use bold and hashed wedges to indicate the stereochemistry.
In what region of the electromagnetic spectrum wil the electron transitions from a higher energy state to n1=3 appear for the hydrogen spectrum?
nbspenergy is classified as potential or kinetic. potential energy is energy that is stored in an object a rubber band
At a certain temperature, Keq = 150. Calculate the concentrations of Fe 3+ and SCN- in a solution that has an equilibrium FeSCN2+ concentration of 4.5 X 10^-5 M using the equation . Assume the equilibrium concentrations of Fe3+ and SCN- are equal.
What is the molarity of an HNO3 solution if 24.1 mL of a 0.250 M Ba(OH)2 solution is needed to titrate a 15.0-ml sample of the acid
A substance is found to consist of 1.900g of silver, 0.250g of nitrogen, and 0.850g of oxygen. What is the percent by mass of oxygen in the compound
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