Answer:
The answer is in the explanation
Explanation:
The atomic weight of an element is defined as the mass of 1 mole of atoms of the element. To find the atomic weight of the first 30 elements we must see our periodic table:
# Element Atomic Weight
1 Hydrogen 1.008
2 Helium 4.0026
3 Lithium 6.94
4 Beryllium 9.0122
5 Boron 10.81
6 Carbon 12.011
7 Nitrogen 14.007
8 Oxygen 15.999
9 Fluorine 18.998
10 Neon 20.180
11 Sodium 22.990
12 Magnesium 24.305
13 Aluminium 26.982
14 Silicon 28.085
15 Phosphorus 30.974
16 Sulfur 32.06
17 Chlorine 35.45
18 Argon 39.948
19 Potassium 39.098
20 Calcium 40.078
21 Scandium 44.956
22 Titanium 47.867
23 Vanadium 50.942
24 Chromium 51.996
25 Manganese 54.938
26 Iron 55.845
27 Cobalt 58.933
28 Nickel 58.693
29 Copper 63.546
30 Zinc 65.38
Answer:
Birds are a member of the phylum Chordata and the subphylum Vertebrata, which means they have vertebrae. They are not mammals because they lay eggs.
Explanation: Hope it helped!
:)
The law of conservation of energy states that energy is never created or destroyed only converted.
Answer:
A I think
Explanation:
It is very dense.
The atom becomes positively charged.
-hope i helped
Answer:
20.2g (3 s.f.)
Explanation:
Please see attached picture for full solution.
