The change in isotopes over time due to the emission of radioactive particles is known as

A. radiometric dating.

B. radioactive decay.

C. absolute-age dating.

D. half-life.

Carbon monoxide (co) is used as a purifying gas in mond's process to produce nickel from its ores. what type of bonding occurs between the atoms of a co molecule?

Chemist A burns 10.000 grams of C₂H₆ in a constant-volume container at 25ºC. Chemist B burns an unknown mass of C₂H₆ in a constant-pressure container at 25ºC. The chemists observe equal amounts of heat.

2) 800mm of Hg to Kpa

When a covalent bond forms between atoms, electrons are a. lost. b. gained. c. shared. d. transferred.?

Why critical thinking and skepticism are important to scientific inquiry

A base a. causes phenolphthalein indicator to change from colorless to pink. b. donates a proton in a proton transfer reaction. c. accepts electrons in an electron transfer reaction. d. produces hydrogen ions in solution. e. does none of the above.

Which of these is an indicator that a chemical reaction has occurred? precipitate forms temperature remains the same color is diluted mass increases

The half-life of isotope X is 3 days, how long will it take for one half of 10g sample to decay

A 69.1-g sample of h2o contains how many molecules of water?

Why is ac used instead of dc