Before the year 1900 the activity per unit mass of atmospheric carbon due to the presence pf ` ''C^14` averaged about 0.2555 bqper gram of carbon: What fraction of carbon atoms were ` ''^14C`?

Before the year 1900 the activity per unit mass of atmospheric carbon due to the presence of 14 C averaged about 0.255Bq per gram of carbon. An archaeological specimen containing 500 mg of carbon, shows 174 decays in one hour. What is the age of the specimen, assuming that its activity per unit mass of carbon when the specimen died was equal to the average value of the air?Half life of ^ 14 C is 5730years?

A person adds 1.71 gram of sugar (C_12H_22O_11) in order to sweeten his tea. The number of carbon atoms added are ( molar mass of sugar = 342)

Carbon dating method measures the radio activity of C-14 and the ratio of _________ present in the organism's body.

Draw all the possible structural formulae having molecular formula C_(6)H_(14) . Give names to all the isomers. Which difficulties were faced by you while naming? As the time progressed, the carbon compounds became very large in number and their common names caused confusion. A need was felt to have a logical system acceptable to all for naming the carbon compounds.