Chemistry, 13.10.2020 01:01 jahazielBrainly15006

A 315 g sample of sodium-24 decays to 13.0 g of sodium-24 within 60.0 h. What is the half-life of this radioactive isotope?

Answers: 2

Show answers

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 12:00, BreBreDoeCCx

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal. b. he is determining chemical properties that are sufficient to identify the metal. c. he is determining physical properties that are insufficient to identify the metal. d. he is determining chemical properties that are insufficient to identify the metal.

Answers: 3

continue

Chemistry, 22.06.2019 17:50, kaylamount

Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?

Answers: 2

continue

Chemistry, 22.06.2019 22:00, choatefarmsus

Does the number of ions in solution increase, decrease, or remain constant? it continuously decreases. it continuously increases. it decreases at first, then increases. it increases at first, then decreases.

Answers: 3

continue

Chemistry, 22.06.2019 22:30, StupidFatChipmunk

What must be in balance for temperatures to remain constant?

Answers: 1

continue

You know the right answer?

A 315 g sample of sodium-24 decays to 13.0 g of sodium-24 within 60.0 h. What is the half-life of t...