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Ask a qMolarity and absolute uncertainty A solution of HNO3 is standardized by reaction with pure sodium carbonate 2H+ + Na2CO3 -> 2Na+ + H2O + CO2 a volume of 25.54+/- 0.06 mL of HNO3 was required for complete reaction with 0.8784+or- 0.0008g of Na2CO3 (FM 105.988+or- 0.001). Find the molarity of the HNO3 and its absolute uncertainty
What is the mass percent of ethylene glycol (C2H6O2) in a solution of ethylene glycol in water that has a freezing point of -15C? (Kf for water is 1.858C/m.)
large volumes of gases are released.if 100g of TNT were detonated, what would the mass of each product be? is the law of conservation of mass obeyed? 2C7H5(NO2)3--> 12CO(g)+2C(s)+5H2(g)+3N2(g)
Assume that the electrode follows the Nernst equation, the temperature is at 25°C, and that the activity coefficient of X is 1.
Prove that if the atmosphere has a lower partial pressure of water than the solid-vapor pressure
How would (The weak base sample was impure, containing about 5% inert material) affect the values of Ka for the weak acid unknown and the values of the molar mass for the disodium salt
find the molarity when 7.85 moles aluminum chloride are dissolved in enough water to make a total of 600. mL
None of the desired ether was obtained. What product was formed and why did this route to the ether fail? Suggest a different substitution reaction that should yield the desired product.
What is the mass of silver bromide AgBr precipatated from 2.96 g of iron (III) bromide FeBr3 ? FeBr3 + AgNO3 = AgBr + Fe(NO3)3.
You prepare a solution from 10.0 mL of 0.100 M MOPS buffer (3-morpholinopropane-1-sulfonic acid) and 10.0 mL of 0.078 M NaOH. Next, you add 1.00 mL of 7.81 × 10-6 M lidocaine to this mixture
Given that Iron(III) oxide or ferric oxide (molar mass = 159.7 g/mol) reacts with Carbon monoxide (molar mass = 28.0 g/mol).
The solubility products of PbSO4 and SrSO4 are 6.3 * 10^-7 and 3.2 * 10^-7, respectively. What are the values of [ SO4 2-], [Pb 2+], and [Sr 2+] in a solution at equilibrium with both substances
At what total pressure of bismuth vapor is the partial pressure of Bi(g) just twice that of Bi2(g) at 1000 K? How many phases are present in the system for this situation?
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