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Write the molecular formula for a compound with the possible elements C, H, N & O that exhibits a molecular ion at M+=85.0894.
Liquid phenol (C6H5OH) flows through a pipe with a mass flow rate of 83.0 g/s. Given that the density of phenol is 1.0576 g/cm3
What is the pH of a buffer prepared by adding 0.809 of the weak acid HA to 0.305 of NAH in 2.00 L of solution. The dissociation constant Ka of HA is of is (5.66 X 10^{-7})
How do you account for the following facts: formic acid, HCOOH contains one carbon oxygen bond of 1.36 A and another of 1.23 A yet sodium formate, HCOO- Na+, contains two equal carbon oxygen bonds, each of 1.27 A.
The sensitivity of a spectrophotometer allows detection of 1 percent of one colored form of an indicator for example HIn in the presence of 99 percent of the other colored form In-. Based on this fact, over what pH range relative to its pK can an ..
A 25.00 mL sample of NaOH is titrated with 26.14 mL of 0.1750 M HCl(aq). What is the concentration of the NaOH solution
how much of the CaCl2 can be prepared from 385g of an ore containing Ca(OH)2 if the ore is 78.4% Ca(OH)2 by mass? Use the equation: 2 NH4Cl + 1 Ca(OH)2 --> 2 HN3 + 1 CaCl2 + 2 H20
Many home barbeques are fueled with propane gas C3H8 What mass of carbon dioxide (in kg}) is produced upon the complete combustion of 18.9 { L} of propane (approximate contents of one 5-gallon tank)
What is the pH of a solution with a hydronium ion concentration of 1.0 x 10-3 mole per liter
Determine hydroxyl and hydrogen ion concentration in this solution. (if Ka for ammonium ion = 5.0 x 10^-10.)
How many moles of HCl are present in 35.5 mL of a 0.200 M solution? 2. A 50.0 mL sample of a 6.0 M solution of HCl is diluted to 200. mL. What is the new concentration
If only COF2 is present initially at a concentration of 2.00 M , what concentration of COF2 remains at equilibrium? Express the molar expression numerically
The following compounds, listed with their boiling points, are liquid at -10 degrees celsius: butane, -0.5 degrees celsius: ethanol, 78.3 degrees celsius: toluene, 110.6 degrees celsius.
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