Barium-122 has a half-life of 2 minutes. A fresh sample weighing 80.0 g was obtained. If it takes
10 minutes to set up an experiment using barium-
122, how much will be left when the experiment
begins? *
2.50 g
5.00 9
O 10.09
1.25 g

How do forces between particles in gases compare to forces in the other states of matter? o a. the forces in gases are stronger than forces in solids but weaker than forces in liquids. o b. the forces in gases are weaker than forces in solids but stronger than forces in liquids. o c. the forces in gases are weaker than forces in solids and liquids. o d. the forces in gases are stronger than forces in solids and liquids. submit

The chemical bond connecting one nucleotide with the next one along the nucleic acid chain is called a

An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.