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A disinfectant solution is made by dissolving 4.50 g of hydrogen peroxide (H2O2) in 143.2 g of water. Calculate the mass percentage of hydrogen peroxide in the solution. What is the concentration of hydrogen peroxide in parts per million? What is the molarity?
To find the of X-281, you prepare a 0.086 test solution of X-281. The pH of the solution is determined to be 2.70. What is the of X-281
If 6.46 L of gaseous ethanol reacts with 16.1 L O2, what is the maximum volume of gaseous carbon dioxde produced.
7.65.50 mL of 0.161 M HF is titrated with 0.1200 M NaOH. What is the pH after 65.50 mL of base have been added? (Ka for HF is 6.8 x 10-4)
Calculate the amounts of C 7 H 8 , C 7 H 16 , and H 2 in the output stream express your answer (in mol s -1 ).
What is the [OH-] in a solution that has a [H3O+] = 1 x 10-6 M?
Methyl red (Ka = 7.9 x 10^-6 is added to a buffered solution of unknown pH. Spectrophotometric measurements show the ratio of the basic to the acidic form of the indicator to be 2.57 to 1.000. Calculate the pH of the buffer solution.
how many milliliters of 0.54M HCL solution are needed to react completely with 4.6g of zinc to form zinc (II) chloride?
Dipole moment, Formaldehyde has a very large dipole moment (2.33 Debye) whereas carbon monoxide has a very small dipole moment (0.11 Debye)
A 6.50-g sample of copper metal at 25.0 C is heated by the addition of 84.0 J of energy. The final temperature of the copper is ____ C.The specific heat capacity of the copper is 0.38J/g-K.
When 24 copper pennies are submerged in water, the pennies displace 8.26 cm3 of water. If the combined mass of the pennies is 73.86 g, what is the density of copper?
what is the pH of a solution prepared by dissolving 4.5 g HCl in water to make 410 mL of solution?
How many moles of HF (Ka = 6.8 10-4) must be present in 0.165 L to form a solution with a pH of 2.25?
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