Answer:
in my view physical change
Explanation:
it is just my view don't mind.
might be wrong
Hello!
Atoms are made of 3 types of particles: Electrons, protons, and neutrons. The protons and neutron (referred to collectively as nucleons) make up the nucleus (center) of the atom, while the electrons surround the nucleus.
Answer:
Protons, neutrons, and electrons.
Answer:
k = 1.26 x 10^-12
Its extremely small.
It follows that when k is small... The equilibrium concentration of Reactant is large and More than Product.
Option C should be your answer
The answer is
6.8 * 10^-15
The explanation:
1- we have to convert all measurements to the same units:
Conversions:
when 1 m = 100 cm
and 1 m = 10^12 pm
So,
proton radius: 1.0*10^-13 cm * (1m / 100 cm) = 10^-15 m
proton volume: 4/3 * pi * r^3 = 4/3 * pi * (10^-15 m)^3 = 4.2 * 10^-45 cu. meters
and
H atom radius: 52.9 pm * (1m / 10^12 pm) = 5.29 * 10^-11 m
H atom volume: 4/3 * pi * r^3 = 4/3 * pi * (5.29 * 10^-11 m)^3 = 6.2 × 10^-31 cu. meters
So,
2- Fraction of space occupied by nucleus = proton volume / H atom volume
= (4.2 * 10^-45 cu. meters) / (6.2 × 10^-31 cu. meters)
= 6.8 * 10^-15
So, the "fraction" would be 6.8 * 10^-15 out of 1.
Answer:
Sr(s)+2H20(l)--->Sr(OH)2(aq) + H2(g)
(s) denotes a solid
(l) (looks like an I, but it is an L,) denotes a liquid
(g) denotes a gas
(aq) denotes an aqueous solution, just something dissolved in water