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25.5 mL of 0.152 M HCl(aq)will neutralise 25.0 mL of NaOH(aq)solution of unknown concentration. Calculate the concentration of the NaOH(aq)solution. Your answer should be in molL-1 (aka M). Please do not include units in your answer. Give your answer to 2 significant figures.
What mass of sodium hydrogen carbonate is needed to make the buffer solution 0.10 M in sodium hydrogen carbonate? pH is 10.1 pka is 10.33.
determined the percent Co by converting your product into a blue-violet colored Co complex and measuring the absorbance in the Spec 20 instrument. What is the formula of this blue-violet complex?
If the energy needed to raise the temperature of the water to 28.1 C is obtained from the combustion of methane (CH4), what volume of methane, measured at STP must be burned
Florine is so reactive that it forms compound with material insert to other treatment when 0.448gm of plantinum is heated in florine, 0.71gm of dark red, volatile solid forms. What is emperical formula
Explain how these products are produced by showing the mecahnism involved. (draw).
The molar heat of combustion of methanol (molar mass = 32.0g/mol) is -757kJ/mol. If 2.00 g of methanol is placed in a bomb calorimeter with a heat capacity of 6.50 kJ/degree C what is the temperature rise when the sample is combusted?
A student reacted 0.22 g of zinc (Zn) with excess hydrochloric acid (HCl) to generate hydrogen gas (H2).
according to the ideal gas law a 10.0 mol sample of methane gas in a 0.815 l container at 503 k should exert a pressure
a reference standard prepared by dissolving 5.4 mg of a transition metal coordination compound in 40 ml of water
What is the balance chemical equation for the reaction of CuSO4 + NAOH and what is the reaction classification.
You could determine Ka for benzoic acid by measuring the pH of a 0.010 M solution of benzoic acid. Why is graphical method (pH vs volume of NaOH added) a better way of determining Ka
Question- The turbulence Reynold number of a stoichometric n-hexane/air mixture, whose mixing time os 50 microseconds and whose large eddies have a mean size of 1 mm, exceeds 10^4 at 1000 K.
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