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Physical Chemistry
The heat capacity is critical in calculating the enthalpy and entropy. Using the data (heat capacity) from book or internet and also ∆fus H (I2) = 15.52387kJ/mol at 387K and ∆vap (I2) =41.57kJ/mol at 457K. a) Calculate the heat required to bring one mole of iodine from 0K to 500k. b) calculate the absolute entropy of iodine at 500K
Physical Chemistry
why the temprature of matter remain same at phase change?
Physical Chemistry
I have developed a soap bubble solution (like the kind kids play with, but for making giant soap bubbles) and I want to store it in a concentrate form, to be diluted later.
I’m using 6.5 g. of guar gum powder and 7 g. baking powder per 7 fl. Oz. of Dawn Professional Manual Pot & Pan Dishwashing Detergent. When diluted into 1 gallon of water, the mixture is perfect for making very large soap bubbles.
HOWEVER - when stored in its concentrated state, the guar gum and baking powder settle out of the detergent within a day or two, leaving a layer of sediment at the bottom of the container, which must be mixed back into the detergent before dilution.
HOW CAN I PREVENT THIS SETTLING FROM OCCURRING, WHILE ALSO MAINTAINING A POURABLE, FLUID CONSISTENCY?
I really need a shelf stable concentrate that does not separate!
I’m using 6.5 g. of guar gum powder and 7 g. baking powder per 7 fl. Oz. of Dawn Professional Manual Pot & Pan Dishwashing Detergent. When diluted into 1 gallon of water, the mixture is perfect for making very large soap bubbles.
HOWEVER - when stored in its concentrated state, the guar gum and baking powder settle out of the detergent within a day or two, leaving a layer of sediment at the bottom of the container, which must be mixed back into the detergent before dilution.
HOW CAN I PREVENT THIS SETTLING FROM OCCURRING, WHILE ALSO MAINTAINING A POURABLE, FLUID CONSISTENCY?
I really need a shelf stable concentrate that does not separate!
Physical Chemistry
which is not colligative property?
Physical Chemistry
h2+cl2-> 2HCl if you start with .250 of H2 and Cl2 determine equilibrium concentrations if keq=2.51 x 1 x 10 -4 what is the answer
Physical Chemistry
What are the units of an average speed calculation when a volume of gas is collected over a number of seconds?
Physical Chemistry
How many calories of heat are required to heat 93.6 g of methanol from -35 degrees C to 55 degrees C? (methanol has a specific heat of 0.61 calories per gram per degree C)
Physical Chemistry
at 76.0 degrees Celsius and 744 torr calculate the number of moles and mass of 4.52 L of CH4 gas
Physical Chemistry
In '2Pbo(s)' what is the meaning of '(s)'?
Physical Chemistry
Predict whether Fe3+ can oxidize I- to I 2 under standard-state conditions
