In a first order decomposition in which the rate constant is 0.204 sec-1, how long will it take (in seconds) until 0.399 mol/L of the compound is left, if there was 0.991 mol/L at the start? (give answer to 3 decimal places) ?

The device shown is used for lifting 55-gallon drums. determine the magnitude of the force exerted at b.

The force acting per unit area is called: - A. Upthrust force B. Buoyant force C. Pressure D. Weight

Why are we unlikely to find earth-like planets around halo stars in the galaxy? why are we unlikely to find earth-like planets around halo stars in th?

When a particle of mass m is at (x comma 0) , it is attracted toward the origin with a force whose magnitude is StartFraction y Over x squared EndFraction.

The 6 strings on a guitar all have about the same length and are stretched with about the same tension. The highest string vibrates with a frequency that is 4 times that of the lowest string.

Imagine riding On a merry-go-round at the center. As you walk to the outer edge, the merry-go-round slows in order to conserve angular momentum. True or false?

17. (a) Will the electric field strength between two parallel conducting plates exceed the breakdown strength for air (3.0*106 V/m) if the plates are separated by 2.00 mm and 5.

What property of sound enables us to distinguish one sound source from another?

The table below shows the right ascensions of two stars at a location. Star 1 - 4 right ascension (in Hour) Star 2 - 3 right ascension (in Hour) Which of these statements is correct about the stars?

H-2 + H-3 → He-4 + Consider the nuclear reaction that takes place in the sun. Two nuclides of hydrogen fuse to form helium. Is helium the only product of this reaction? If no, identify any additional products. A) Yes, He-4 is the only product. B) No.