A sample of pure water was spiked with 0.475 ng/mL silver ion. Ten replicate determinations of the spiked water sample gave 0.485 , 0.465 , 0.442 , 0.428 , 0.469 , 0.449 , 0.453 , 0.457 , 0.435 , and 0.420 ng/mL silver ion. Determine the mean percent recovery of the spike and the detection limit of the analytical method used for the silver ion determination.

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.

the product of the pressure and volume is also constant

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.

a electronegativity decreases beacuse the size of nucleus is bigger.