What is the half-life of a radioisotope if a 100 g sample becomes 50 g after 20 years?
O A. 50 years
O B. 20 years
O C. 25 years
O D. 10 years
SUBMIT

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.

When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device

In one or two grammatically correct sentences, write a definition for the term molecule geometry