Beccaroviachani Beccaroviachani

14-02-2016
Chemistry

contestada

Which of the following is a radioisotope used to date rock formations older than 50,000 years?
a. Carbon-14.
b. Uranium-235.
c. Cobalt-69.
d. Carbon-12.

Respuesta :

BlueDomo BlueDomo

14-02-2016

You use uranium, carbon 14 half life is such that after 50000 years there won't be much left in the sample.

Answer Link

Otras preguntas

A bond has a coupon rate of 6 percent and the bond makes semiannual coupon payments. The dollar amount of coupon interest received every six months isa.$60.b.$3

Which statement is true about illness and disability in middle adulthood? Group of answer choices Unintentional injuries more than double from early to middle a

HELP ASAPPPPPPPPPPPPPPP

As a manager at IceCold Foods, Oscar is responsible for the firm's S'Cream brand of ice cream. He recently approved a proposal to test market new ice cream flav

Diane and I were the only students in our class to receive scholarships, so tuition is lower for us than they. Is this the correct pronoun ?

The librettos of this genre, usually derived from historical events or mythology, typically glorified aristocratic ideals. Much of the action, which occurs off

seven is greater than 3x minus 5 which is less than or equal to 22

Bobby came home from school crying because the other kids in his class were calling him stupid. His mother tried to console him, but he really started to believ

Present Value of an Annuity of 1 Periods 8% 9% 10% 1 0.926 0.917

A well-insulated cup of water is too hot to make tea, so you mixed it with an equal amount of cool water to lower the temperature. The temperature of the mixtur