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1) Explain why it is important to rinse out the burette and pipette with the reagent that it will hold before it is used in a titration?
2) Explain why is importante to rinse out the conical flask with distilled water before it is used in a titration?
if a sample of gas is at 2 atm and is at 15 degrees celsius, what would be the new pressure in the gas if the gas is heated to 100 degrees celcius?
How much of the 37.0% HCl concentration stock do you need to prepare this solution?
What is the molarity of a solution formed by mixing 20.0 g sulfuric acid with enough water to make 500.0 mL of solution?
Hardness in groundwater is due to the presence of metal ions, primarily Mg2 and Ca2 . Hardness is generally reported as ppm CaCO3 or mmol/L Ca2
Tell what type of chemical reaction is represented by the following chemical equation.
Determine the activation barrier for the reaction.
Calculate the amount of energy released when 8.02g of Hydrogen reacts with excess Oxygen.
What is the mass of a rectangular piece of copper 24.4cm x 11.4cm x 6.6cm? The density of copper is 8.92 g/cm^3.
High levels of ozone (O3) make rubber deteriorate, green plants turn brown, and cause people to have difficulty breathing. Calculate delta G at 298 K for the formation of 1 mole of O3 from O2 in urban smog, where [O2]=0.210 atm and [O3]=5.00x10^-7..
what is the lewis structure and molecular geometry of pernitrate and carbonate ion?
If two liquids A and B that both boil at 100 ºC when pure form a non-ideal, positively deviating solution, what will be the boiling point for a 50:50 mixture of A and B?
compounds x and y have the formula c6h12.nbsp both x and y react with one molar equivalent of hydrogen in the presence
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