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Which of the following statement(s) describes the pressure of gas? a) the force of gas partials on the walls of the container; b) the number of gas particals in a container; c) the volume of the container; d) 3.00 atm; e) 750 torr.
How many grams of Fe(NO3)3 · 9 H2O are required to prepare 300.0 mL of a 0.249 M solution of Fe(NO3)3 · 9 H2O?
You need to determine value of ?G° for CO(NH2)2(s) + H2O(l) CO2(g) + 2NH3(g)?
what is the molecular geometry around each central atom: CH2CH2(double bond) C=? C=? Also, for CH3 O CH3 C-O-C C=? O=? C=.
The temperature of the calorimeter rose from 25C to 33.73C. If the heat capacity of the calorimeter was 9,630 J/C, what is the value of delta H for the combustion reaction in KJ/mol.
The solubility product of lead chromate is 2.0x10^-16 calculate the solubility in moles per liter of lead chromate in each of the following solutions:
Describe a sequence of reactions by which hept-1-yne can be prepared from hept-1-ene. Provide a Chemical equation as well.
Which of the following statements related to kinetic-molecular theory of gases is correct for an ideal gas? A. Gas particles move in a zigzag pattern until they collide with something.
The specific heat of ethanol is 2.44j/g times degrees celcius. How many kilojoules of energy are required to heat 50.0 g of ethanol from -20.0 degrees celcius to 68.0?
The decomposition of hydrogen peroxide is a first-order process with a rate constant of 1.06 x 10-3 min-1. How long will it take for the concentration of H2
A weather balloon has a volume of 750 L when filled with helium at 8 oC at a pressure of 380 torr. What is the new volume of the balloon when the pressure is 0.20 atm and the temperature is -45 oC?
If the concentration of fluoride in fluoridated drinking water is 1 x 10 ^-5 M and the calcium ion concentration in blood is 2.5 x 10^ -3 M, why is there no danger of CaF2 precipitating in the blood stream, after drinking the water?
69.7 grams of a solute with a molecular mass of 2790 grams are dissolved in enough water to make 1.00 dm(3) of solution at 20 degrees C. What is the osmotic pressure of the solution? express your answer in kPa
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