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Would it be possible to vary the temperature of a system consisting of water and ethanol (CH3CH2OH) while maintaining an equilibrium between solid, liquid, and vapor phases? Would the same be true if the system were held at constant pressure?
A mass of 47.5 g of H2O(s) at 273 K is dropped into 225 g of H2O(l) at 298 K in an insulated container at1 bar of pressure. Calculate the temperature of the system once equilibrium has been reached.
What masses of calcium sulfate and phosphoric acid can be produced from the reaction of 1.0kg calcium phosphate with 1.0kg concentrated sulfuric acid (98% H2SO4 by mass)?
A student found that the mass of an empty specific gravity bottle was 21.431 g. Metal pieces were added to the dry bottle. The specific gravity bottle and the metal pieces together
Express your answer with the appropriate units. Indicate the multiplication of units explicitly either with a multiplication dot (asterisk) or a dash
What volume of pure O2(g), collected at 27°C and 746 torr, would be generated by decomposition of 114 g of a 50.0% by mass hydrogen peroxide solution? Ignore any water vapor that may be present.
Explain what is methylphenidates purpose and its chemical structure? Also determine how does it affect the body of human beings ,what makes up that compound , what organs do it impact?
The element Na has bcc packing with a body-centered cubic unit cell. The density of sodium is 966 kg/m3. Calculate the volume (m3) of the unit cell of sodium.
How much PV work is done if 88.0 grams of C 2H 4 ethylene and 120 grams of hydrochloric acid HCl are permitted to react at atmospheric pressure and the volume change = -70.3 Litres?
calculate the concentration of Hg2 +2 in a saturated aqueous solution of (Hg2)3[Co(CN)6]2 which dissociates into mercurous ion and Co(CN)6 -3 (cobalticyanide).
What is a catchy, orignal slogan for the element neon that describes one of its important uses?
What is the order of the reaction if it takes 10 minutes, 20 minutes, 30 minutes to reach 75% conversion?
How much heat (in kJ ) is required to warm 13.0 of ice, initially at -13.0, to steam at 114.0? The heat capacity of ice is 2.09 and that of steam is 2.01
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