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Chemistry

Charcoal (burned wood) that was used to make prehistoric drawings on cave walls in france was scraped off and analyzed. the results were 8 mg-carbon-14 (parent isotope) and 56 mg hitrogen (daughter isotope). the half-life of carbon-14 is 5,730 years. how old are the cave drawings?

Why are cis and trans isomers of succinic acid impossible?

how much smaller is an electron than a proton​

what is the chemical name of baking soda

HELP PLEASE!!!!!!!!! What if you started with 100 grams of wood and only have 95 grams of ashes produced, is mass still conserved? If so where is the missing 5 grams?

Which of the following is the best definition of watershed?

What happens to the particles of matter when a liquid changes to gas

Provide a preliminary design for an air stripping column that removes toluene from groundwater. The toluene concentration ranges from 0.1 to 2.1 mg/L and must be reduced to less than or equal to 50 µg/L. According to a hydrogeologic study, the flow rate should be 110 gallons per minute to prevent the spread of contamination. Laboratory investigations determined the overall mass transfer coefficient (KLa) to be 0.020 sec^-1. Design the column with a 2.0-foot diameter and an air-to-water ratio of 15. Calculate the liquid loading rate, stripping factor, and tower height. Provide a sketch of the column, including all required accessories.

What is the molarity of a solution containing 14.6 g of Ca(NO3)2 in 221 mL?

Which nonmetal would an ion of Ca2+ MOST LIKELY ionically bond with in a 1:1 ratio? A) one atom of neon B) one atom of carbon C) one atom of oxygen D) one atom of fluorine

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