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Explain A 5.58-g sample of graphite was heated with 70.0 g of O2 in an 8.00 L flask. Subsequent to the reaction was complete the temperature in the flask was 182 degrees Celsius. What was the total pressure inside the flask?
Draw the correct molecular geometries of the following covalent compounds. Use the electronegativity differences between the atoms in each bond pair to determine the presence and direction of individual bond dipoles in each molecule.
A 1.30 g sample of dry ice is added to a 745 mL flask containing nitrogen gas at a temperature of 25.0 degrees Celcius and a pressure of 715 mmHg.
In the distillation of a flammable mixture why is it important to keep the graduated cylinder distillation receiver as high up the bottom of the bent vacuum adapter as possible
A student dissolves 1.50g of copper(II) nitrate in water. After adding aqueous sodium carbonate solution which contains 1.80g of sodium carbonate, the student obtains 0.875g of CuCO3 precipitate.
describe the observations you would make and write a net ionic equation for any reaction that would occur.
Select each side of the mass balance equation for an Fe3(PO4)2 solution where the existing species are Fe2 , PO43-, HPO42-, H2PO4-, H3PO4, FeOH?
Hydrogen and oxygen react in a 1:8 mass ratio to form the compound H2O. Using the law of definite proportions, determine how many grams of hydrogen will react completely
a bacterial culture isolated from sewage produced 35.5 ml of methane ch4 at 31 oc and 753 mmhg. what is the volume of
The difference in chemical potential between two regions of a system is +7.1 kJ/mol. By how much does the Gibbs free energy change when .10 mmol of a substance is transferred from one region to the other?
Which of the following statements is correct with regard to the following two solutions? (Note: Use the ideal values of the van't Hoff factor.) (I) 0.70 m LiBr and (II) 0.24 m CaBr2
A substance with the empirical formula C2HCL (the 2 is a subscript) has the molar mass of 181.44 g/mol. Find the molecular formula of this compound.
What would be potential of a battery formed by perchlorate/chlorate ion pair
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