The atomic mass of platinum rounded to the nearest whole number is 195.
The atomic mass of an element refers to the weighted average of the masses of all the isotopes of the element. The mass number is the sum of the number of protons and neutrons in the nucleus.
Looking at the question, it is clear that the atomic mass of platinum rounded to the nearest whole number is 195.
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Answer:
c: Yes, if each sample contains 6.02 x 1023 atoms.
Explanation:
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The answer is dv hypothesis ride a car instead of a bike
Answer:
Total concentration of ions present in the final solution is 0.0726 M.
Explanation:
Mass of silver nitrate = 54.0 g
Moles of silver nitrate =
Volume of the solution made = V = 350.0 mL = 0.350 L
After dilution of 10.00 mL 0.9227 M solution.
Concentration of silver nitrate after dilution = 0.0363 M
Total concentration of ions present in the final solution:
Answer:
7 valence electrons.
Explanation:
Oxygen lies in period 2 and group 16 of the periodic table. It is eighth element on the periodic table. Its symbol is O.
Its electronic configuration is given by:
16 = 2,8,6
It has 6 valance electrons. Its valancy is -2. It means can share share and it can gain 2 electron to get stability.
Hence, The element oxygen has <u>7</u> valence electrons.