How many moles are equal to 3.82x10^20 atoms of helium?

Phosphorus pentoxide (P4O10) is used as a dehydrating agent in many organic synthesis reactions. What type of bonding occurs between the atoms of a P4O10 molecule?

Consider the reaction N2 (g) + O2 (g) ⇌ 2NO (g) If the equilibrium partial pressures of N2, O2, and NO are 0.22, 0.19, and 0.030 atm, respectively, at 2200°C, what is KP?

What is peer review in science

Mr. Garcia told his students to evaluate their designs as if they were engineers. Design Team 4 had (1) the most expensive design and (2) it met none of the criteria. What modifications should Design Team 4 consider for the next trial?

Which general trend is found in Period 3 as the elements are considered in order of increasing atomic number? (1) increasing atomic radius (2) increasing electronegativity (3) decreasing atomic mass (4) decreasing first ionization energy

The heat from the bonfire is transferred to the student's hands through the process of

How many atoms are present in 0.0845 moles of tungsten (W) ?

Indicate which reactions are redox reactions. check all that apply. check all that apply. 2na (s) + cl2 (g) →2nacl (s) cd (s) + pb2 + (aq) →cd2 + (aq) + pb (s) pb (no3) 2 (aq) + 2licl (aq) →pbcl2 (s) + 2lino3 (aq) c (s) + o2 (g) →co2 (g)

If the mass of a material is 119 grams and the volume of the material is 20 cm3, what would the density of the material be?

There are some exceptions to the trends of first and successive ionization energies. For each of the following pairs, explain which ionization energy would be higher: (a) IE₁ of Ga or IE₁ of Ge (b) IE₂ of Ga or IE₂ of Ge (c) IE₃ of Ga or IE₃ of Ge