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) ?

A surface receiving sound is moved from its original position to a position three times farther away from the source of the sound. the intensity of the received sound thus becomes a. three times as high. b. three times as low. c. nine times as high.

Describe the relationship between amperage, voltage, and power.

1. What is the atomic number of an atom? Why is this number important? |

Given three 10-ohm resistors arranged in a series circuit, the total resistance for the circuit is

A rock is dropped from a sea cliff, and the sound of it striking the ocean in heard 3.2. s later. If the speed of sound is 340m/s, how high is the cliff?

Ways that charges can be transferred

A cricketer can throw a ball to a maximum horizontal distance of 100m. How much high above the ground can he throw same ball

What is the relationship between the slope of the position graph of an object and its velocity?

Differeniate between thermal energy and heat

The term that describes the time when the sun's are directly over the equator is: