wackydenny99 wackydenny99

20-05-2023
Chemistry

contestada

The half-life of 221 Fr is 5 min. If the radioactivity of a sample of 221Fr is 0.32 pCi, what would the activity of this sample be after 15 min considering 1st
order reaction? The Curie (Ci) is just a unit of radioactivity (like a concentration!)

Respuesta :

Otras preguntas

Stress ________ activity in the sympathetic division of the autonomic nervous system. stress also _________ activity in the parasympathetic division.

If Thomson’s atomic theory was accurate, what would the results of Rutherford’s gold foil experiment have been?

Which of the following is a main contribution of the Spanish? A cattle ranching in the Southwest B purchase of Manhattan Island C strong fur trading industry

Mccollum v. board of education (1948) was an important case on religion and education. in its ruling, why wouldn't the supreme court allow the public school rel

George plays basketball in a week-long camp. On Day 2, he scored 8 points. On day 4, he scored 12 points. Explain how to measure his average rate of change

you have $140 in a savings account and save $10 per week. Your friend has $95 in a savings account and saves $19 per week. How many weeks will it take for you a

9. Jane has a checkbook balance of $68.00. She then writes two checks, one for $5.00 and one for $62.50. She also deposits $75.00. She then uses her calculato

Why is it only possible to induce an extrasystole during relaxation?

Plutonists "won" the eighteenth-century debate about how rocks formed by demonstrating how limestone precipitates out of the ocean.

Factor: 216+8d^3 d^3 is d to the third power

ACCESS MORE