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Express the concentration of a 0.0170 M aqueous solution of F-, in mass percentage and in parts per million. assume the density of the solution is 1.00g/ml
a sample is a mixture of agno3 cucl2 and fecl3. when a 1.0000-g sample of the mixture is dissolved in water and reacted
What is the molarity of a solution prepared by dissolving 10.5 grams of NaF in enough water to produce 750 mL of solution?
how much heat is released when 75.0 g of steam at 100.0°C is cooled to ice at -15.0°C? The enthalpy of vaporization of water is 40.67 kJ/mol
A copper wire (density = 8.96 g/cm3) has a diameter of 0.27 mm. If a sample of this copper wire has a mass of 35 g, how long is the wire?
At a given temperature, what relationship appears to exist between a gas particle's mass and its speed
Reactant: water and 2.51 g of SbCl3 Product: 1.906 g of a solid of antimony, oxygen and chlorine, and 0.802 g of a single gas that is 97.20% chlorine and 2.75% hydrogen What is the empirical formula of the gas and the solid
burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 4.701 °C. What is the heat capacity (calorimeter constant) of the calorimeter?
For each of the following pairs, indicate which substance possesses the larger standard entropy. (BE SURE to circle one in each pair). a. 1 mol of He (g) in 3 L @ 298 K OR 1 mol He (g) in 3 L @ 400 K
What is the concentration of a solution made by diluting 95 mL of 6.0 M HCL to a final volume of 750 mL
We sometimes use complex formation to make relatively insoluble salts more soluble. For instance, AgCl(s) has Ksp=1.6x10^-10. Silver ions can form complexes with the thiosulfate ion
An imagnary element Xz conists of two isotopes having massess of 100.00 amu and 102.0 amu. A sample of Xz was found to contain 75.0% of the 100xz isotope and 25.0% of the 102xz. Calculate the atomic weight of Xz
Draw a structure of the species that is formed at the lower PH if the acid proton adds to the azo nitrogen atom adjacent to the aromaic ring containing the SO3- group. Why does the proton adds to this particular nitrogen when two other nitrogen at..
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