Many hospitals use radioisotopes for diagnosis and treatment or in palliative care. Three radioisotopes used in medicine are given.

Write the isotope symbol for each radioisotope.

iodine-131:

cobalt-60:

samarium-153:

Which information would be required to determine the mass number of nitrogen?

Toxaphene is a pesticide that was applied to cotton crops. If 1.5 kg of toxaphene is applied to 1000 m3 of soil and the soil density is 1700 kg/m3, Determine the toxaphene concentration in the soil in units of ppm.

you are given 500 mL of a 5M stock solution of ammonium chloride but for your experiment, you only need 100 mL of a 0.65M solution. Explain how to make the solution you need?

Solubility of Marble? What is the solubility of Ca^2 + in normal rainwater, for which pH = 5.6?

Which of the following best characterizes the structure of diamond? a. a thin sheet b. a cubic lattice c. a round shape d. a crystalline matrix

Write an equation that shows the formation of the phosphide ion from a neutral phosphorus atom.

Which of the following terms is defined by the measure of mass per unit of volume? gravity density weight acceleration

Select the lon. O NO₂ H2SO4 O A3

True or False: A Solar eclipse occurs when Earth casts a shadow on the Moon.

To which digestione organ dose food travel it leaves the stomach