The half-life of carbon14 is 5,730 years. If a fossil is determined to have a carbon-14 amount corresponding to 4 half-lives, what is the approximate age of the fossil?

22,000 years

35,000 years

17,000 years

29,000 years

Suppose you have made the following hypothesis: The greater the height from which you drop a ball, the faster the ball will be traveling when it hits the ground because gravity has more time to speed it up.

AlF3 is almost insoluble in anhydrous HF but dissolves if KF is present. passage of BF3 through the resulting solution causes AlF3 to precipitate ... can anyone explain the idea behind this?

Which two polymers have the same linkages bonding the monomers together? A nylon and complex carbohydrate B nylon and protein C Terylene and complex carbohydrate D Terylene and protein

Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO (s) + H2O (l) →Ca (OH) 2 (s) In a particular experiment, a 4.50-g sample of CaO is reacted with excess water and 5.45 g of Ca (OH) 2 is recovered.

Moles of Zn (NO3) 2 in 131.50g of this substance.

How many valence electrons are transferred from the calcium axiom to iodine?

Atoms in a gaseous state have

1. On paper, solve the following two problems. You must show all the required work. a. An 85.00 g sample of tetraethyllead, a gasoline additive, is found to contain 54.44 g lead, 25.26 g carbon, and 5.30g hydrogen. Find its empirical formula. b.

How many neutrons are in Barium-137 a-137 b-81 c-112 e-56

How does specific heat and heat transfer relate to remote islands