Answer:
An elementary particle that is identical with the nucleus of the hydrogen atom, that along with the neutron is a constituent of all other atomic nuclei, that carries a positive charge numerically equal to the charge of an electron.
Example:
The nucleus of a hydrogen atom or the H+ ion is an example of a proton. Regardless of the isotope, each atom of hydrogen has 1 proton; each helium atom contains 2 protons; each lithium atom contains 3 protons and so on.
Answer:
The only PH range which is not covered by any of the given components of the universal indicator is 7.6-8.0
Hence the PH range 7.6-8 can't be described using universal indicator.
Explanation:
The given data is as follows.
P = 3 atm
=
=
= 9 L = (as 1 L = 0.001 ),
= 15 L =
Heat energy = 800 J
As relation between work, pressure and change in volume is as follows.
W =
or, W =
Therefore, putting the given values into the above formula as follows.
W =
=
= 1823.85 Nm
or, = 1823.85 J
As internal energy of the gas is as follows.
= Q - W
= 800 J - 1823.85 J
= -1023.85 J
Thus, we can conclude that the internal energy change of the given gas is -1023.85 J.
Answer:
Explanation:
Any densities less than 1g/cm3 will float, while objects with densities over 1g/cm3 will sink.