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Concentrated hydrochloric acid is 38% HCl by weight and has a density of 1.19 g/mL. A solution is prepared by measuring 63 mL of the concentrated HCl, adding it to water, and diluting to 0.900 L. Calculate the approximate molarity of this solution from the volume, percent composition, and density.
How much heat is needed to melt 22.4g of ice at zero degrees celcius to form liquid water at zero degress celcius?
The decomposition of HI(g) is represented by the equation 2HI(g) H2(g) + I2(g) Kc= 64 at 25°C. If the equilibrium concentrations of H2 and I2 at 400°C are found to be [H2] = 9.3x10-4 M and [I2] = 1.6x10-3 M, what is the equilibrium concentration o..
Calculate the theoretical pH of 0.250 M weak acid, HA. Calculate the theoretical pH of a 2.5 x 10-3 M weak acid, HA, that has a Ka value of 1.2 x 10-4. What happens to % ionization of the weak acid as you dilute the acid?
The coal that is burned is a form of pure carbon. (Diamonds and graphite are other forms of pure carbon). A sample of coal is completely burned in a 10.0 L cylinder at a constant pressure of 1.10 atm and a temperature of 1000 oC.
Choose the selection which lists the following substances in order of increasing boiling point (lowest boiling substance listed first)
Chlorine gas can be produced commercially by passing an electric current through a con- centrated solution of sodium chloride (brine).
Atrazine is an herbicide widely used for corn and is a common groundwater pollutant in the corn-producing regions of the United States. The log Kow for atrazine is 2.65.
In the procedure, you extracted sodium chloride from the insoluble silicon dioxide and calcium carbonate by dissolving the sodium chloride in distilled water. However, calcium carbonate is actually slightly soluble in water
under free radical conditions when the concentration of Br2 is kept very low, the following reaction occurs: 1-octene to (Z)-1-bromo-2-octene (39%), (E)-1-bromo-2-octene (44%), 3-bromo-1-octene (17%)
If the average solar insolation in USA = 4.25 kWh m-2 per day , and the area of USA is 9.36 x 1012 m2. Calculate: 1. The total available power in W. 2
Write a net ionic equation for the reaction that occurs when excess hydrobromic acid (aq) and iron(II) sulfide (s) are combined. Include states
Suppose in universe Xacto matter is composed of protons, neutrons, and special matter X. For elements in a, design and draw a new periodic table that makes sense for this parallel universe.
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