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Explain the trituration process and why all of the CH2Cl2 solvent must be removed to yield piperine crystals.
HCOOH and HCOONa How many milliliters of HCOOH and HCOONa would you use to make approximately a liter of the buffer?
calculate the energy needed to raise the temperature of 180.0g of water from 10.0 C to 40.0 C. The molar heat capacity for water is 75.3 J/k*mol
At 0.0 degrees C, if the volume of air is 1.7 mL and the pressure of the atmosphere that day is 695 mmHg, what is the number of moles of air?
what is the balanced equation with notations for steam reacting with solid carbon to form the gases carbon monoxide and hydrogen.
The concentration of carbon in a carbon-metal alloy is found to be 4.73x10^1 kg/m3. It is also known that the concentration of carbon in wt% in the alloy is 1.318x10^0 .
Deficiency of phosphoglyceromutase d) mutation that interferes with the formation of quarternary structure in hemoglobin
odium carbonate (Na2CO3) can be produced by heating sodium bicarbonate (NaHCO3). A student heats 5.128 g sodium bicarbonate to completely decompose the sample to sodium carbonate.
Some alloys of early and late transition metals (e.g., ZrPt3) have much higher enthalpies of vaporization (per metal atom) than either of the pure metals
for the reaction represented by the equation cl2 + 2kbr 2kcl +br2 how many moles of potassium chloride are produced from 119 g of potassium bromide?
A certain substance has a molar heat of vaporization of 31.6 kj/mol. How much of the sunstance is in a sample that requires 57 kj to vaporize.
What is the empirical formula of cyclopentane? If the molar mass of cyclopentane is 70.1 g/mol, what is its molecular formula?
Describe how this observation is consistent with the law of conservation of charge.
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