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What volumes of 0.40 M HNO2 and 0.56 M NaNO2 must be mixed to prepare 1.00 L of a solution buffered at pH = 3.55?
HNO2 = __L?
NaNO2 = __L?
The half life of Iodine-131 is 8.0252 days. If 14.2 grams of I-131 is released in Japan and takes 31.8 days to travel across the Pacific
If it is known that 41.6 grams of PURE ELEMENT THAT IS NOT DIATOMIC represents 1.30 moles of this element, what is the atomic mass of the element?
Also calculate the pressure in atmospheres using the van der Waals equation. For N2, a=1.35 (L^2?atm)/mol^2, and b=0.0387 L/mol.
What potential issues might arise if the pH of your buffer is too close to the pI of your protein of interest? Why might an extreme buffer pH ( 9) be unsuitable?
How many moles of NaOH would be required to completley neutralize 37.22mL of 0.25M HCl.
A cook wants to heat 1.73 kg of water from 30.0C to 100.0C .If he uses the combustion of natural gas (which is exothermic) to heat the water, how much natural gas will he need to burn.
If 1L of .15M NaOH is unprotected from mmol of CO2, what will be its new molarity when it is standardized agains a standard solution of HCl using
the heat of neutralization for this acid-base reaction is measured by using nbspa coffee cup calorimeternbsp the
What is the heat of vaporization(kJ/mol) if it takes 3,452 J of heat to completely vaporize 2.68 moles of the liquid at its boiling point
How many liters of CO2 at 0 °C and 380 torr are obtained in the reaction of 3 g of ethane with excess O2
The metal used to make the US nickel coin is an alloy of 75% copper and 25% nickel. What maximum mass of alloy could be produced if only 450 kg of nickel and 1180 kg of copper were on hand?
The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.323 g sample of NH4Cl is added to 65.0 mL of water in a calorimeter at 24.5°C, what is the minimum temperature reached by the solution?
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