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You titrate a 425 mL sample of an acide mine drainage with a 0.32 M solution of NaOH. It takes 22.4 mL of the sodium hydroxide to reach the equivalance point. What is the hydrogen ion concentration of the mine drainage sample?
Supppose that a 2 L solution is made from 178 mg of citric acid (C6H8O7). What is the molar mass of C6H8O7
Iron reacts with chlorine gas as follows: 2 Fe (s) + 3 Cl2 (g) > 2 FeCl3 (s)
Stellar nuclear fusion begins with 1H and ends with 56Fe. Younger stars fuse hydrogen to form 4He, while older, more massive stars fuse helium to form heavier elements.
Calculating the concentration of the acetate ion when dissociation of acetic acid occurs in water and over varying pH conditions?
how many millimeters of 5M NaOH are needed to neutralize 40mL of 2M H2SO4
If 155mL of wet {grm{H}}_2 is collected over water at 24 ^circ {rm C} and a barometric pressure of 739torr , how many grams of {grm Zn} have been consumed.
22.5ml of .383 molar H2SO4 is required to completely neutralize 20ml of KOH solution. What is the molarity of the KOH solution?
What is meant by a state of ‘dynamic equilibrium'? What happens to the concentration of reactants and products when a reaction reaches a state of dynamic equilibrium?
Why is the water bath used to heat the reaction? 4)What is the mechanism of the reaction of phenylmagnesium bromide and CO2? Include the workup steps. 5) In this experiment, it is important to use freshly obtained dry ice. Why?
What mass of this substance must evaporate in order to freeze 160 g of water initially at 21 0C? (The heat of fusion of water is 334 {J/g}; the specific heat of water is 4.18 {J/g c.K}.)
Most community water supplies contain 0.5 ppm chlorine added for purification. What mass of chlorine must be added to 1500. L of water to reach this level. (Hint: the density of water is 1.00 g/mL)
explain in molecular terms, whether evaporation rate of a liquid is constant or varied in the presence of changing ambient air pressure.
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