Some More Gen. Chem Q's

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gwest

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Any would be greatly appreciated!! Thanks

In an experiment 25 g of HCL (g) is dissolved in H2O to make 100mL of an acidic solution. Assuming that the acid completely ionized, what is the pH of the solution?..........................-log[25/(0.1*36)]

What mass of styrene (mm= 104.1) will contain 4.5E20 molecules of styrene?........................7.78E-2g

A liter of solution contains 0.00001 mole of HCL. What is the pH of this solution?.........................5.0

A compund consisting of C, H, & O is known by quanitative analysis to have 38.71% C & 9.68% H. What is the empirical formula of this compound?.........................CH3O

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how long it ussully take to do problems like this . for everyone ?
 
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