Density = mass / volume
= 69g / 23 ml
= 3 g / ml.
Thus, the density of the sample is 3 grams per ml or 3g/ ml
Answer: v = 2π2 Kme2 Z / nh
Explanation:
The formula for velocity of an electron in the nth orbit is given as,
v = 2π2 Kme2 Z / nh
v = velocity
K = 1/(4πε0)
m= mass of an electron
e = Charge on an electron
Z= atomic number
h= Planck’s constant
n is a positive integer.
Answer:
Hindi ko po ma gets sinasabi nyu pwedeng pakiayus
H h I ointment o on NB j. Non b kkkk NB nis o ok kno kno
Answer:
Here's what I find.
Explanation:



The sign of ΔH changes when you reverse the reaction.