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What is the balanced net ionic equation? 2Nh4Cl (aq) + Ba(OH)2 (aq) --> 2H2O (l) + BaCl2 (aq) + 2NH3 (aq)
what are the practical properties of acetone and detailed explanation of its properties.
What mass of carbon monoxide in grams is present in a room measuring 10.5 × 11.0 × 20.5 ft?
Calculate the pH of 0.0021 M aminoethanol (pKa = 9.38) in 0.0030 M sodium aminoethanoate (a salt of the conjugate base of aminoethanol).
a peanut butter sandwich provides about 1.6 103 kj of energy. a typical adult uses about 95 kcalhr of energy while
imagine that you own a pharmacy in your area. one of your competitors launches a we will not be undersold campaign
Bond energy is the change in enthalpy that accompanies the dissociation of one mole of the bond in the gaseous state.
A hydrated form of copper sulfate (CuSO4·x H2O) is heated to drive off all the water. If we start with 9.47 g of hydrated salt and have 5.29 g of anhydrous CuSO4
When Fe(s) reacts with HCl(aq) to form FeCl2(s) and H2(g), 7.40 kJ of energy are evolved for each mole of Fe(s) that reacts. Write a balanced thermochemical equation for the reaction with an energy term in kJ as part of the equation.
In a separate experiment, it was found that, for fixed temperature and pressure, a 0.100 L sample of this compound takes 1.73 times longer to effuse than does a 0.100 L sample of Ar(g). What is the molecular formula of the compound. draw possible ..
what volume of 0.100 m naoh is required to precipitate all of the nickel (II) ion from 150.0 ml of a 0.251 M solution of Ni(NO3)2
The titration is monitored with a potentiometer using a SCE reference electrode (Eref= 0.241V). the solution is buffered at ph=4.00.
why is it dangerous to heat a liquid in a distilling apparatus that is closed tightly at every joint and has no vent to the atmosphere?
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