How many moles is 2.80 x 10^24 atoms of silicon

What volume will 2.0 moles of nitrogen occupy at. 947atm and 20° C?

if a light particle and a heavy particle are both at the same temperature do they have the same average energy?

Why does the gas pressure decreases as the volume increases?

The most common isotope of nitrogen is nitrogen-14, or 14N. Which of the following atoms has the same number of neutrons as 14N? A 16O B 15N C 14P D 13C

When 55g C3H8 combusts with 30L of oxygen, how many total atoms can be produced?

4*C: 4cm 8*C: 10cm 12*C: 14cm 16*C: 18cm 20*C:24cm 24*C: 12cm what is the independent variable, dependent variable and three constant variables?

In the chemical laboratory, why do scientists use a mortar and pestle? a. to increase surface area of a solute b. to decrease surface area of a solute c. to increase temperature of a solute d. to decrease temperature of a solute

Is a mixture being separated into two elements a chemical change

Which electrons are lost by an atom of iron when it forms the Fe3 + ion? A. One s orbital electron and two d orbital electrons B. Two s orbital electrons and one d orbital electron C. Three s orbital electrons D. Three d orbital electrons

What does a three letter chemical symbol mean