The radius of which of the following orbit is same as that of the first bohr's orbit of hydrogen atom?
a) he+ (n=2)
b) li2+ (n=2)
c) li2+ (n=3)
d) be3+ (n=2)
where n=orbit

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car

Calcium carbonate decomposes at high temperatures to give calcium oxide and carbon dioxide as shown below. caco3(s) cao(s) + co2(g) the kp for this reaction is 1.16 at 800°c. a 5.00 l vessel containing 10.0 g of caco3(s) was evacuated to remove the air, sealed, and then heated to 800°c. ignoring the volume occupied by the solid, what will be the mass of the solid in the vessel once equilibrium is reached?

The movement of tectonic plates and in two locations is described below: location a: tectonic played push together location b: tectonic plates push apart