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A sample of KCIO3 gas that is collected over water. The volume of gas collected is 0.250L at 26C and 765 torr total pressure. P H2O = 25.21 torr. The reaction is 2 KCIO3 arrow 2 KCI + 3 O2. (g)
How many moles of O2 are collected
How many grams of KCIO3 were decomposed?
If 20 moles G2 (random element) are reacted with 10 moles B2 (random element) , how many moles of G2B will be formed
Describe four common, effective uses to which medieval society put human and animal excrement (feces and urine), with reference to the nitrates contained.
How many molecules
hexane is a hydrocarbon a molecule containing only carbon and hydrogen with a molecular weight of 86.18 gmol a density
Consider the pH range for the following indicators and select the most appropriate indicator for the titration of an HCN solution with a NaOH titrant.
Estimate the mass of carbon needed to deposit a single-atom-thin layer of graphene onto a silicon wafer that is 76.0 mm in diameter
Calculate the amount of heat liberated (in kJ) from 399 g of mercury when it cools from 73.0°C to 12.0°C.
A 25.0 mL sample of 0.150 M hydrofluoric acid is titrated with a 0.150 M NaOH solution. What is the pH at the equivalence point? The Ka of hydrofluoric acid is 4.50 × 10-4.
what doe the product and balanced equation of NaOH+NH4HCO3 come out to be. Also what would the product and balanced equation of CuSO4 + a nail be and NH4HCO3 + heat be
A mixture of CaCO3 and CaO weighing 0.693 g was heated to produce gaseous CO2. After heating, the remaining solid weighed 0.436 g. Assuming all the CaCO3 broke down to CaO and CO2, calculate the mass percent of CaCO3 in the original mixture.
If the Ka of a monoprotic weak acid is 4.5 x 10^-6, What is the pH of a 0.14 M solution of this acid
A 0.2088g sample of an unknown monprotic acid is titrated with 22.10 ml of 0.1000 mol/L KOH. The pH of the solution after the addition of 22.10 ml of base is 5.02. What is the Ka for the acid?
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