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Describe the effect of temperature on the stability of foods with glassy nature (needs to be related to food chem)
explain how to determine the instantaneous rate of formation of i3- at exactly 20 minutes. draw on the graph above as part of your. explanation.
The normal boiling and freezing points of substance X are 87.3 K and 84.0 K respectively. The triple point is at 82.7 K and 0.68 atmosphere. a. Draw a phase diagram for substance X. Label the regions in which the s,l, and g phases are stable.
The aqueous solubility of CO2 at 20 degrees Celsius and 1.00 atm is equivalent to 87.8 mL of CO2(g), measured at STP, per 100 mL of water. What is the Molarity of CO2, in water, that is at 20 degrees Celsius and saturated with air at 1.00 atm. The..
The dow process isolates magnesium from molten MgCL2. How many moles of electrons are required to convert 54.7g of magnesium
A gas of unknown molecular mass was allowed to effuse through a small opening under constant-pressure conditions. It required 62 s for 1.0 L of the gas to effuse. Under identical experimental conditions it required 33 s for 1.0 L of O2 gas to effu..
If the Ksp of KHT was determined experimentally to be 3.8E-4 at 25 C, calculate the mass of KHT needed to make 200 mL of saturated solution.
How many moles of water can be produced from 14 moles of carbon dioxide. How many moles of CH4 will be produced along with 6 moles of water
A quantity of N2 occupies 62.2 L at a partic- ular temperature and pressure. Its density is 0.900 g/L. How many moles of N2 are in the container?
When X-rays with a wavelength of 154 pm (pm = 10^-12 m) are diffracted from an unknown crystalline compound, the first reflection occurs at theta= 4.24 What distance does that correspond to? (assume n =1)
what is the percentage ionization of the benzoic acid in the resulting solution. Ka(benz acid)=6.5 * 10^-5
Calculate the equilibrium pressure of the H2O vapour at both 0oC and 25 oC. The value of ?H is 522.0kj/mol, why may be assumed constant over the temperature range of interest.
Compute how many ml of C2H3NaO2(0.2 M) need to be added to 200 mL of 0.1 M CH3COOH to make a buffer of pH 5 and also find out what would be the total concentration of C 2 H 3 O 2 be in this (acetate + acetic acid) solution ?
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