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What is the ratio of atoms of hydrogen to atoms of oxygen, H:O, in ammonium sulfate, (NH4)2SO4? Please explain.
At a certain temperature, the solubility of strontium arsenate, Sr3(AsO4)2 is 0.0620 g/L what is the Ksp of this salt at this temperature
The solubility product for strontiumcarbonate is 10-9.30 M2. The formation constant for the hydroxocomplex Sr(OH)+, is 100.82 M-1
What is the [OH-] of each solution? (a) 0.4 M NaOH, pH = 13.6 (b) 1E-2 M K2CO3, pH = 11.2
Discuss the nuclear reactions
How many OH- ions appear in the correctly balanced equation, and on which side of the arrow?
Water self ionizes to a small extent creating equal concentrations of hydronium and hydroxide ions. What is the molar concentration of these ions in water at 25oC.
Estimate the molecular diameter of methane (CH4) from the tabulated van der Waals constants in Atkins.( viscosity measurement would suggest a diameter of 0.414nm)
The mass spectrum of an organic compound shows the relative abundances of M to be 38.82% and M 1 to be 7.977%. Assuming the peaks are caused by 12C and 13C isotopes, determine the number of carbon atoms in the compound. Natural abundances: 12C is ..
If air is drawn into the pump at a pressure of 0.97 atm during the upstroke, how long must the downstroke be, in centimeters, to raise the pressure of the air to 5.40 atm (approximately the pressure in the tire of a 10-speed bike). Assume no chang..
What is the theoretical yield (in grams) of gold when 1.378 L of hydrogen gas (density = 0.0902 g/L) reacts with 20.14 g of gold(III) chloride in solution
A 0.1276g sample of a monoprotic acid (molar mass=1.1*10^2) was dissolved in 25mL of water and titrated with .0633M NaOH. After 10mL of base had been added, the pH was determined to be 5.17. What is the K_a for the acid
What is Nitroglycerin's molar mass if the addition of 0.454 g of nitroglycerin to 100.0 g of benzene changes the solution's vapor pressure to 94.85 mm Hg?
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