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The pressure of a gas in a container is 152 mm Hg. This is equivalent to ____. 0.2 atm 2 atm 0.3 atm 0.4 atm 2. If a liquid is sealed in a container and kept at constant temperature, how does its vapor pressure change over time? It continues to steadily increase. It increases at first, then remains constant. It increases at first, then decreases. It continues to steadily decrease. 3. Compared to the melting points of ionic compounds, the melting points of molecular solids tend to be ____. similar unpredictable lower higher 4. The smallest group of particles in a crystal that retains the shape of the crystal is called the ____. cube unit cell cage crystal lattice
if 5.00 g of each NH3, O2, and CH4 are reacted, what mass of HCN will be produced, assuming 100% yield
30.0 mL of 0.150 M CH3CO2H are titrated with 0.150 M NaOH. What is the pH of the solution after 15.0 mL of NaOH has been added. The Ka for acetic acid is 1.80 x 10-5
Give the reaction scheme, showing the products formed (before hydrolysis), when one equivalent of ethylmagnesium bromide is treated with one equivalent of 5-hydroxy-2-pentanone
Calculate the energy in joules and calories required to heat 24.0g water from 20.0C to 27.7C
Assume that a reaction takes place at 296 K and 306 K. What must the activation energy be for the rate constant to double as described.
Mass of Carbonates Needed to Raise Solution pH One Unit, An actual lab titration of a mildly acidic process water at a pH of 4.0 requires 0.9 grams/liter of Na2CO3 to raise the pH from 4.0 to 5.0; re-running the titration but this time using CaCO3..
Compute the enthalpy change for the dissolution of ammonium nitrate express your answers in units of kJ/mol.
Calculate the heat of enthalpy for the reaction: PCl5(g) → PCl3(g) + Cl2(g)
How many moles of Na3C6H5O7 can be produced if one tablet containing 0.0164 mol of NaHCO3 is dissolved?
How much heat (in kJ}) is evolved in converting 1.00 mol} of steam at 160.0C to ice at -55.0C? The heat capacity of steam is 2.01 {J/gC}} and of ice is 2.09 J/gC}.
How did I get a greater than 100% recovery of benzoic acid?, To quickly summarize, the lab dealt with isolating benzoic acid from a mixture via chemically active extraction.
A sample of gas is collected over water at a temperature of 35.0?C when the barometric pressure reading is 625 torr. What is the partial pressure of the dry gas, given PH2O = 42.2 torr?
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