so:
so:
it means that
in
of acid there is
moles of acid
so:
it means that:
in
of water there is
moles of water
therefore:
So your answers are:
and the mole fraction is:
Answer:
Yes
Explanation:
Masses for the three subatomic particles can be expressed in amu (atomic mass units) or grams. For simplicity, we will use the amu unit for the three subatomics. Both neutrons and protons are assigned as having masses of 1 amu each.
Answer:
173.5 g
Explanation:
This question seems incomplete, as the power by which 10 is increased is missing. I will answer this question assuming the given number of molecules is <em>7.03x10²³ </em>molecules. A different number of molecules will give a different answer, but the procedure remains the same.
First we <u>convert the given number of molecules into moles</u>, using <em>Avogadro's number</em>:
- 7.03x10²³ molecules ÷ 6.023x10²³ molecules/mol = 1.17 mol
Then we <u>convert magnesium nitrate moles into grams</u>, using its <em>molar mass</em>:
- 1.17 mol * 148.3 g/mol = 173.5 g
Answer:
The number of core electrons = 18 electrons.
The number of valence electrons = 1 electron.
Explanation:
- The core electrons are the electrons in the inner shells (1s²2s²2p⁶3s²3p⁶).
∴ the number of core electrons = 18 electrons.
- The valence electrons are the electrons in the outermost shell (4s¹).
∴ the number of valence electrons = 1 electron.
Answer:
A solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.
Explanation: