What’s the estimate of each object below? Description Age (years)

Egyptian papyrus with 63% of its original carbon-14 atoms

Aboriginal charcoal with 22% of its original carbon-14 atoms.

Mayan headdress with 79% of its original carbon-14 atoms

Neanderthal skull with 3% of its original carbon-14 atoms

What is the chemical formula for the compound formed between sodium and flour one

One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(ii) carbonate, in concentrated sulfuric acid. the sulfuric acid reacts with the copper(ii) carbonate to produce a blue solution of copper(ii) sulfate. scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: (s) (aq) (s) (aq) suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. he adds powdered iron to a copper(ii) sulfate sample from the plant until no more copper will precipitate. he then washes, dries, and weighs the precipitate, and finds that it has a mass of .

How many moles of ccl4 are in 3.55l