51:14

If greenhouse gases in the atmosphere act like a blanket around the Earth, how is this "blanket" being changed by human

activities?

Combustion analysis of toluene, a common organic solvent, gives 8.20 mg of co2 and 1.92 mg of h2o. if the compound contains only carbon and hydrogen, what is its empirical formula?

The pressure of a gas results from the sum of the volumes of the particles being larger than the container volume. gas particles colliding with each other. gas particles colliding with the container walls.

When designing an experimental investigation, why is it important to test only one variable?

Calculate the ph of a buffer solution that contains 0.25 m benzoic acid (c6h5co2h) and 0.15m sodium benzoate (c6h5coona). [ka = 6.5 x 10-5 for benzoic acid]

How does thermal energy works to heat up a room and the cooking of food?

A sample of gas occupies 6 ml at stp. at what pressure would this sample occupy 500 ml if the temperature is changed to 525◦c? answer in units of torr.

the pressure of the compressed gas is 3.00 atm. if the area of the piston is 0.0590 m^2, what is the force exerted by the gas on the piston in Newton's

In the equilibrium and concentration gizmo, you learned that you can predict the direction of a reaction by comparing the reaction quotient (qc) with the known equilibrium constant kc. you can do the same thing using partial pressures:

The molar solubility of Ag2CO3 is 0.074M at 10°C. What is the Ksp of Ag2CO3 at the same degree?

Is sodium hydroxide dissolves in water a physical change