Explanation:
The full ground state electron configuration for silicon is given as;
1s² 2s² 2p⁶ 3s² 3p²
The closest noble gas to Si is Ne. The Noble gas shorthand is given as;
[Ne] 3s² 3p²
The full ground state electron configuration for copper is given as;
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s¹
The closest noble gas to Cu is Ar. The Noble gas shorthand is given as;
[Ar] 3d¹⁰ 4s¹
The electronic configuration for Ca is given as;
1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
Answer/Explanation:
A theory has lots of scientific evidence to back it up. We know this to be true based on lots of different diseases and studies of their spread.
A hypothesis is more of a starting point - an educated guess based on limited evidence. It requires further testing before becoming a theory.
A law is something that can be generalized to lots of contexts, and is universal. Such as the law of thermodynamics.
Answer: acetic acid structure
Explanation:
In the lewis structure we have 24 valence electrons
This may help you.
1. Calculate molecular mass of CuSO4•5H2O
2. Calculate molecular mass of ALL oxygen atoms in CuSO4•5H2O (which are 4 oxygen atoms in CuSO4 and 5 oxygen atoms in H2O so in total its 9 oxygen atoms, thus find molecular mass if 9 oxygen atoms)
3. Do mathematical cross multiplication
Molecular mass of CuSO4•5H2O - <span>1.67×<span>10<span>−2</span></span>moles</span>
molecular mass of 9 oxygen atoms - X moles
so
X= <span>1.67×<span>10<span>−2</span></span>moles</span><span> * molecular mass of 9 oxygen atoms / Molecular mass of CuSO4•5H2
and get the answer :3</span>
The two key characteristics of a good scientific investigation is observation and hypothesis.