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Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons. Show the formal charges of all atoms in the correct structure. ClO4 -
What volume of 1.00M HCl in liters is needed to react completely (with nothing left over) with 0.750L of 0.100M Na2Co3
An organic compound has a molecular weight of 176.12 amu and was found to contain only three elements, C, H and O. When a 1.0000 g sample was completely combusted in air
Calculate the pH of a solution prepared by dissolving 0.40g of Na2O in enough water to make 0.600 L of solution? Express your answer using two decimal places.
What is ?, the electromotive efficiency to three significant figures?? Open the hint panel below for the definition of electromotive efficiency. (d) What is the pH of an unknown that gives a reading of 19.6 mV with this electrode at 30°C?
burning 0.115g of the compound in oxygen gives 0.379g of CO2 and 0.1035g of H2O. what is the empitical formula of mesitylene.
Copper dissolves in nitric acid, producing copper (ll) nitrate. After reaction with sodium hydroxide and heating, copper nitrate changes to copper (ll) oxide. Calculate the percent yield of this process if 1.075 g of copper produced 1.075 g of cop..
A certain automobile of mass 1920 kg travels on a German autobahn at 120 km/h. What is the wavelength of the automobile?
A sample mixture of CH4 and C2H6 weighing 0.732 g burned to give 2.064 g CO2. What is the mass of CH4 in the mixture.
When limestone (which is principally CaCO3) is heated, carbon dioxide and quicklime (CaO) are produced by the reaction CaCO3(s)?
Write complete ionic equation to show the reaction of aqueous Hg2NO32 with aqueous sodium chloride to form solid Hg2Cl2 and aqueous sodium nitrate.
Calculate the hydronium ion concentration and the pH after the addition of .25mL of .10 M HCl to each one. What accounts for the difference in hydronium ion concentrations? Explain this based on equilibrium concepts.
The students continued to do the experiment and determined the negative heat capacity of a metal and heats of reaction, using the negative heat capacity for the calorimeter.
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