Answer:
In the given case, the atomic number of the given atom is 15, hence its nucleus contains 15 protons. The number of protons and electrons are the same in atom and that is what keeps it neutral. In the second case, the atomic number is 20. Hence, the atom will contain a total of 20 protons in its nucleus.
Explanation:
There are actually 5 skills
in applying Hess’ Law. According to science.uwaterloo and chem.libretexts.org
these are the 5 skills.
- changing the enthalpy of
the reaction whenever the equation changes
- interpreting the Hess’ Law
- applying the principle of
conservation of energy to solve the problem
- sketching an energy diagram
for any related reactions
<span>- and lastly using the
diagram to explain the Hess’ Law.</span>
Autotroph CAN make it's own food. For example: plants- they feed of itself
Answer:
2 moles of Methane gas will occupy 44.8 L
Explanation:
If one mole of any gas occupies 22.4 L under certain conditions of temperature and pressure, and those conditions are assumed in this question, then we comfortably solve this problem as follows;
1 mole of Methane gas ---------------> 22.4 L
2 moles of Methane gas -------------->?
Cross and multiply, 2 moles of Methane gas = 2 X 22.4 L = 44.8L
Therefore, 2 moles of Methane gas will occupy 44.8 L, if the conditions of temperature and pressure are maintained.
OPTION A IS THE RIGHT SOLUTION.
Ion-dipole forces
H2O has hydrogen bonding, which is a form of dipole-dipole forces, and NO3- is an ion, so the intermolecular attraction is ion-dipole.
