Help me please in chemistry?

Tyler

New member
at 25 degrees c how many mm of bromine could you dissolve in 1.000L of water? ( density of water is 1.00 g/mL, solubility of bromine 3.3 g/100 water at 25 C?

Silicon consists of 3 stable isotopes. Silicon-28 has a mas of 27.98 amu and an abundance of 92.2 %, silicon-29 has a mass of 28.98 amu and an abudance of 4.7% , silicon-30 has a mass of 29.97 amu with abundance of 3.1%. Calculate the atomic mass of silicon.

how many atoms would there be in 1.00 g of zinc? How many moles are there in 3.48 g of zinc? What is the mass of 2million atoms of zinc?
 
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