How many grams of TiCl4 are needed to produce 17.8 g of titanium? what equation do i use?

Answer 1

I actually figured out how to do that one. but i have another one

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Living organisms give a decay rate of 15.3 counts/min for each gram of carbon in the sample. A sample of wood from an Egyptian mummy case gave a count of 7.00 counts/min for each gram of carbon in the wood. How old was the mummy case? has a half-life of 5770 y.

Answer 2

oops just the last part