The half life of iodine-125 is 60 days. If there was 4000 g of Iodine-125 to start, how much would be left after 360 days?

Type the correct answer in the box. Express your answer to three significant figures. An air mattress is filled with 16.5 moles of air. The air inside the mattress has a temperature of 295 K and a gauge pressure of 3.5 kilopascals.

When the pressure and number of particles of a gas are constant, which of the following is also constant? a. the sum of the volume and temperature in Kelvin b. the difference of the volume and temperature in Kelvin c.

Which formula represents a polar molecule? (ch4) (hcl) (nh3)

Which formulas represent two polar molecules? A) CO2 and HCl B) CO2 and CH4 C) H2O and HCl D) H2O and CH4

Which of the following places the most sulfur trioxide in earth's atmosphere?

Which sample of water contains particles having the highest average kinetic energy?

Use the terms magnetic field and magnetic pole in a sentence

Which of the following statements about chemical formulas is FALSE? A) The subscripts represent the relative number each type of atom in the compound. B) The subscripts represent the relative mass of each type of atom in the compound.

The lowest possible concentration of free hydrogen ions is represented by a ph value of

Diseases that are inherited are caused by