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What is the purpose of washing the products of a dehydration of 2-Methylcyclohexanol with saturated aqueous sodium chloride and saturated aqueous sodium bicarbonate?
Using the information below, what is the most stable form of sulfur at 298K and 1atm? (no calculations needed) S(rhomic): V=0.016, delta H formation=0, delta G formation=0, Standard molar S=31.8, standard molar Cp=22.64 S(monoclinic)
The imaginary nonmetal E has two isotopes 50E(isotopic mass 49.9715 u abundance 76.66%) 52E (isotopic mass 51.9663 u) Calculate the atomic mass of E as it would appear in the periodic table.
Assuming that prior experiments have shown the single-step extraction removes only 77% of the ethanol, what is the mass of ethanol in your original unknown. 10.328g mass of ethanol moved by extraction,32.193 g unknown in original solution.
a solution of ammonia and water contains 3.50times1025 water molecules and 5.80times1024 ammonia molecules. how many
The total molarity of acid and conjugate base in this buffer is 0.100 . A student adds 6.40 of a 0.340 solution to the beaker. How much will the pH change? The of acetic acid is 4.760.
strontium metal crystalizes in a cubic unit cell which has a edge length of 612 pm. If the mass of an atom of Sr is 87.62 amu, and the density of Sr is 2.54 g/cm3.
calculate the energy in joules and calories. required to heat 5.25g of water, from 55 C to 64.8 C
Ammonia burns in oxygen according to: 4NH3(g) + 7O2(g) ? 4NO2(g) + 6H2O(l) ??H?_rxn^o=-1396 kJ given ?H_f^o(NH3)g = -46 kJ/mol and ?H_f^o(H2O)l = -286 kJ/mol the heat of formation of NO2(g) ?H_f^o(NO2)g (in kJ/mol) is: A) +48 B) -48 C) +34 D) -29
In a quality control analysis for sulphur impurity 5.6 g metal sample was burnt in a stream of oxygen and sulphur was converted into SO2 gas The SO2 gas then oxidizes to sulphate by using H2O2 solution towhich had been added 30 mL of 0.04M NaOH
when liquid water is put into an evacuated vessel at 25 celsius what is the sign of the change in enthalpy, entropy, free energy, and temperature for the system during this process?
A woman had a heart attack caused by thrombus. the cells immediately downstream from the thrombus were deprived of oxygen and , as a result, increased
During the saponification of ethyl tetradecanoate, would you expect the product to generate foam/froth when mixed
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