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0.2M guanidine reacting with 0.2 moles of HCl. Assume that the volume of the solution does not change.
Calculate the pH. (pKa of Guanidine = 13.6)
What is the concentration of a potassium ion in 2.0 M of potassium sulfide?
When the following reaction is balanced in basic solution using the lowest possible whole number coefficients, the coefficient of ClO2-(aq) will be: Cl2O7(aq) + H2O2(aq) --> ClO2- (aq) + O2(g)
when 2 moles of mg3n2 are allowed to react with water to form ammonia gas and magnesium oxide how many moles of h2o are
Phenol is an enol. in water it will undergo an enol to keto tautomerization. 1) Will this reaction likely go by a base or acid catalyzed mechanism. Show the mechanism. 2) Which is more stable the enol or the ketoform, Why
A circuit has two bulbs connected in series, bulb A has a p.d. of 1.2V, bulb B has a p.d. of 1.7V. A 22ohm resistor is connected in parallel around bulb A. The battery has a p.d. of 2.9V. What is the current in the battery?
A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 251{rm torr} . Pure pentane and hexane have vapor pressures of 425
The pressure gauge on a 20.0 m3 tank of nitrogen at 25 ?C reads 10 bar. Estimate the mass of nitrogen in the tank by : (a) Direct solution of the ideal gas equation of state. (b) Conversion from standard conditions.
The complete combustion of methane, CH4, to form carbon dioxide gas and oxygen gas at constant pressure releases 890 kJ of heat per mole of methane consumed. (a) Write a balanced thermochemical equation for this reaction. (b) Draw an enthalpy diagram..
You have 493 mL of chlorine trifluoride gas at 699mmHg and 45 degrees Celsius. What is the mass (in grams) of the sample.
question explain how the mass of a single atom in an element jn amu the mass of one mole of atoms of that element and
determine the percent yield for the reaction between 28.1g of sb4o6 and excess c if 17.3 of sb is recovered along with
What is the solubility of MnS, in grams per liter, in a buffer solution that is 0.115M HC2H3O2 - 0.500M NaC2H3O2 ? For MnS, Kspa=3x10^7
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