A gas cylinder of volume 0.052 m3 contains oxygen gas at a temperature of 22°C and a pressure of 2.0 × 105 Pa. Some of the oxygen in the cylinder is used and the gas pressure falls to 1.6 × 105 Pa. The temperature remains constant. Calculate the number of molecules removed from the cylinder

These models show the electron structures of two different nonmetal elements. which element is likely more reactive, and why? element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table. element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table. element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons. element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

What should the power status of a circuit be when measuring resistance with an ohmmeter?

How many electrons in an atom could have these sets of quantum numbers? =3n=3 electronselectrons =4,ℓ=2n=4,ℓ=2 electronselectrons =6,ℓ=ℓ=−1n=6,ℓ=2,mℓ=−1