After decaying for 48 hours, l/16 of the original mass of a radioisotope sample remains unchanged. What is the half-life of this radioisotope?

4.98 * 10³ in standard form

If the length width and height of a sphere is 3.7 what is the diameter

Which of the following groups of carbon compounds includes enzymes? lipids proteins carbohydrates nucleic acids

What is the characteristic of a sciencentific theory

A computer program that shows all possible planetary orbits

Hen an electric current passes through liquid water, hydrogen gas passes accumulates at one electrode and oxygen accumulates at the other. Which of the following is true? A) A physical change has occurred, with energy is being absorbed.

Explain what happens to water when heat energy is absorbed a. Ice melts b. Liquid water freezes c. Water vapor condenses

Will fluorine form an anion or a cation? Why?

An atom of argon in the ground state tends not to bond with an atom of a different element because the argon atom has 1). More protons than neutrons 2). More neutrons than protons. 3) a total of 2 valence electrons. 4).

When bases dissolve in water they release what type of negative ion?