there would be 3.752*10^24 atoms in 100 grams of CH4
Steps:
CH4: 12.01+4(1.01)=16.05
100g/16.05 mol mass=6.23g/mol
6.23*6.02*10^23=3.75*10^24
Number of proton K=19
so, 42 - 19 =23
then the answer in 19 protons and 23 neutrons
Answer:
Its 19.
Explanation:
K (potassium) has 19 electron according to the atomic number in the periodic table. The atomic number tells you the number of protons and electrons.
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Answer:
A = 8
B = 8
C = O ( Oxygen )
D = 26
E = 30
F = Fe (Iron)
Explanation:
1)To get "A" we use the following formula
mass number = number of protons + number of. neutrons
15 = number of protons + 7
15 - 7 = number of protons
8 = number of protons
A = 8
2)To find "B"
atomic number = number of protons
Atomic number = 8
B = 8
3)To find "C"
the atomic number is 8 so the element which
has 8 atomic number on periodic table is Oxygen.
C = oxygen
4) To get "D"
Number of protons = atomic number
number of protons = 26
D = 26
5)To get "E"
mass number = number of protons + number of. neutrons
56 = 26 + number of neutrons
56 - 26 = number of neutrons
number of neutrons = 30
E = 30
6) To find "F"
The atomic number is 26 so the element which has 26 atomic number on periodic table is Iron.
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