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Magnesium metal burns in the presence of gaseous oxygen to produce solid magnesium oxide. If 12.5 moles of magnesium reacts with 5.25 moles of oxygen, how many moles of magnesium oxide can be produced?
The molar solubility of lead(II) iodate in water is 4.0 ? 10-5 mol/L. Calculate Ksp for lead(II) iodate
A 0.3146-g sample of a mixture of NaCl(s) and KBr(s) was dissolved in water. The resulting solution required 41.80 mL of 0.08765 M AgNO3(aq) to precipitate the Cl-(aq) and Br-(aq) as AgCl(s) and AgBr(s). Calculate the mass percentages of NaCl(s) a..
Galactose and glucose compose lactose, which is referred to as milk sugar. What is the molecular formula of galactose if the empirical formula is CH2O
What concentration should you make your stock solution of vincristine in order to make this 5uL addition?
gas cylinder a has a volume of 48.2l and contains n2g at 8.35 atm at 25 degrees c. gas cylinder b of unknown volume
A chemist dissolves 128 mg of pure hydrobromic acid in enough water to make up of 110 mL solution. Calculate the pH of the solution.
Three solutions are mixed together to form a single solution. one contains 0.2 mol pb(CH3COO)2, the second contain 0.1mol Na2S and the third contains 0.1mol CaCl2. A. write the net ionic equations for the precipitation reaction or reactions that o..
Calculate the standard heat of reaction, or , for this reaction using the given data. Also consider that the standard enthalpy of the formation of elements in their pure form is considered to be zero.
predict the reaction at both the anode and cathode for the electrolysis of molten NaF(in molten NaF,only the ions are present,ie no water is present).
how many grams of sucrose c12h22o11 must be added to 500.0 g of water at 100 degc to change the vapor pressure to 752
The first-order rearrangement of CH3NC is measured to have a rate constant of 3.61 x 10-15 s-1 at 298 K and a rate constant of 8.66 × 10-7 s-1 at 425 K. Determine the activation energy for this reaction.
How many moles of HF (ka= 6.8 X 10^-4) must be present in 0.200L to form a solution with a pH of 3.25
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