How many moles of ions are in 1.80 mol of K2SO4?

Which of these is a mixture 1) carbon 2) carbon dioxide 3) air 4) oxygen

Which of the following would produce a continuous absorption spectrum?

Identify each of the following elements as an actinide, an alkali metal, an alkaline-earth metal, a halogen, a lanthanide, a metalloid, a noble gas, a transition metal, or a post-transition metal. Use the most specific term that applies. a.

Pressure is this sample? 3. If a steel cylinder with a volume of 1.50 L contains 10.0 moles of oxygen, under what pressure is the oxygen if the temperature is 27.0 °C? 4. When the pressure in a certain gas cylinder with a volume of 4.

What measurement changes base on the strength of gravity?

What do dipole-dipole forces do? A. Replace covalent bonds with hydrogen bonds B. Turn nonpolar molecules into solids C. Hold polar molecules together D. Hold nonpolar molecules together

As the moon revolves around earth, it also rotates on its axis. Why is it that the same side of the moon is always visible from earth

The SI unit for quantity of radioactive materials is:

If you choose to wear loose clothing, large or dangling jewelry, or contact lenses to lab, which of the following statements best represents how you should proceed? A.

Which of these elements exists as a solid at room temp and pressure? Chlorine, bromine and iodine. Why?