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Aluminum and oxygen react according to the following equation:4 Al (s) + 3 O2 (g) → 2 Al2O3 (s)What mass of Al2O3, in grams, can be made by reacting 4.6 g Al with excess oxygen?
What is the order of the reaction if it takes 10 minutes, 20 minutes, 30 minutes to reach 75% conversion?
Concentrated HCl is 36.5% HCl by mass and has a density of 1.18 g/mL.What is the molality?What is the molarity?
Estimate the change in entropy if fifty kilo joules of energy are transferred reversibly and isothermally as heat to a large block of Cu at zero degree Celsius and seventy degree Celsius?
A 5.00 g sample of KBr at 25.0°C dissolves in 25.0 mL of water also at 25.0°C. The final equilibrium temperature of the resulting solution is 18.1°C.
Uses of de-Broglie equation in electromagnetic specra - Find the mass of oxygen and decomposed potassium chlorate along with the pressure in the glass bulb.
What mass of this substance must evaporate in order to freeze 170 of water initially at 23? (The heat of fusion of water is 334 the specific heat of water is 4.18 .
Find the value of Pressure - How much more pressure will the gas exert if the temperature is raised to 44.1°C?
A voltaic cell consists of a Mn/Mn2+ electrode (E°= -1.18 V) and a Fe/Fe2+ electrode (E°= -0.44 V). Calculate [Fe2+] if [Mn2+] = 0.050 M and Ecell = 0.78 V at 25°C.
Write balanced chemical equations for the following reactions.
A balloon contains 400cm3 of helium at 25degrees and 1atm pressure. If the balloon bursts when the volume exceeds 800cm3. What would be the maximum temperature it could withstand at constant pressure?
What was the volume occupied by the sample under the new conditions - Determine what volume of 3.00M HCl in liters is required to react
A nugget of pure gold of 4.80 grams absorbed heat of 283 Joules. if the temperature was 23.0°C initially then determine what was the final temperature of the Au gold it is given that the specific heat of Au= 0.129 J/(g·°C).
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