A 0.4158-g sample of primary-standard was treated with 45.00 mL of dilute perchloric acid. The solution was boiled to remove , following which the excess was back-titrated with 9.85 mL of dilute . In a separate experiment, it was established that 26.02 mL of the neutralized the in a 25.00-mL portion. Calculate the molarities of the and .

The answer is b carbon-14. the radioactive isotope of carbon used in carbon dating has a half-life of 5730 years. potassium-40 is used to date 1.25 billion years

Ibelieve your answer is true 

Answerit curves up and levels out.explanationwe assume that the container contains absolutely no ammonia to begin with as it states that "nitrogen gas and hydrogen gas" react to "produce ammonia."at dynamic equilibrium, the product and reactant concentrations are equal.this means that, starting from a concentration of zero, [nh₃] must curve "up" from zero and then level out to a constant concentration.