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A mercury mirror forms inside a test tube by the thermal decomposition of mercury(II) oxide. 2 HgO(s) 2 Hg(l) + O2(g) Hrxn = 181.6 kJ (a) How much heat is needed to decompose 504 g of the oxide? kJ? (b) If 282 kJ of heat is absorbed, how many grams of mercury form? g?
Find the hydronium ion concentration,the hydroxide ion concentration and the pH of a 0.001 M solution of HCI,if alpha=1 2) Which of salts hydrolize in aqueous solution : CaCO3,Pb(NO3=2,Al2S3?
Why exactly are oxidation reactions one in which a oxygen is inserted into a bond, hydrogen is removed from a bond, and a more electronegative atom is inserted in the bond, replacing a carbon or a hydrogen
The weak acid AH4 has how many buffering regions. Can anyone explain how to approach this type of problems
How do you redraw methane to show the tetrahedral character of carbon in methane by drawing methane using solid wedges and dashed wedges?
what mass of barium is produced when molten BaCl2 is electrolyzed by a current of 3.30 105 A for 7.00 hours?
Calculate the mass (in mg) of KCN needed to make 500. mL of aqueous KCN solution with a pH of 10.00.
I'm working on a Lewis Structures sheet. After we have completed the structures, which i have, we need to predict the shape of the molecule in VSEPR. What is the shape of a C2H6 amd a C2H4 molecule in VSEPR?
an unknown gas has a density of 1.60 g/L at 1.00 atm and 30.5 degrees celsius what is the molar mass of the gas.
In an experiment to analyze mixture of sodium carbonate, sodium bicarbonate, and an inert component. 10.00ml of 0.100M HCl were used to titrate 0.300g of the sample using phenolphthalein as the indicator. Calculate the number of moles and the mass..
Draw a flow diagram simply showing how to separate a neutral organic compound from an organic acid and purify both.
determine the freezing point of a solution of 60.0g of glucose,C6H12O6,dissolved in 80.0g of water.
Calculate the pressure when the volume is 1.22 L and the temperature is 307 K.
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