Answer:
The chlorine-37 has 20 neutrons.
Explanations:
1) When an atom of chlorine-35, then it contains 18 neutrons.
mass = 17 protons + 18 neutrons = 35
2) When an atom of chlorine-37 then it contains 20 neutrons
mass = 17 protons + 20 neutrons = 37
Note: Adding or removing a neutron from an atom's nucleus creates isotopes of a particular element
Because it must be stable. Everything wants to reach ability when it comes down to atoms and compound/molecules etc.
Answer:
Solution that is 0.100 M CH3COOH (acetic acid)
and 0.100 M NaCH3COO (sodium acetate)
Find pH of buffer solution:
CH3COOH(aq) + H2O ↔ CH3COO-
(aq) + H3O+(aq)
[CH3COOH] [CH3COO-
] [H3O+]
initial 0.100 0.100 ≈0
-x x x
equil 0.100 – x 0.100 + x xFind pH of buffer solution:
CH3COOH(aq) + H2O ↔ CH3COO-
(aq) + H3O+(aq)
Ka = [CH3COO-
][H3O+
]
[CH 3COOH] = (.100 + x)x
(.100 - x) = 1.8 x 10-5
x = 1.80 x 10-5 M
pH = 4.7
Explanation:
Answer:
Olá, a resposta que você está procurando é, na verdade, plasma mais refração. Eu estou usando um tradutor para ajudá-lo agora, então eu espero que você não se importe.
Explanation:
Answer:
mass = 0.907865 grams
Explanation:
From the periodic table:
molar mass of Li = 6.941 grams
molar mass of F = 18.998 grams
Therefore:
molar mass of LiF = 6.941 + 18.998 = 25.939 grams/mole
number of moles can be calculated as follows:
number of moles = mass / molar mass
We have:
number of moles = 0.035 moles
molar mass = 25.939 grams/mole
Substitute in the equation to get the mass as follows:
0.035 = mass / 25.939
mass = 0.035 * 25.939 = 0.907865 grams
Hope this helps :)
