Answer:
74
Explanation:
we know,
atomic number = number of protons
so,
atomic number = 74
The solubility of a gas (Sgas) is directly proportional to its partial pressure (Pgas). what pressure of carbon-dioxide is required to keep the carbon dioxide concentration in a bottle of club soda at 0.12 M at 25 degrees Celsius ? 0.12 M = 3.4 x 10^-2 (Pgas?)
Answer:
0.0250 g
Explanation:
176.12 g/mol* 0.000142 mol =0.0250 g
Answer:
Mass of 1 mole of Aluminium = Mass of 6.02 x 10 23atoms of Aluminium = 26.98 grams.
Explanation:
1 mole of any element or molecule has 6.02 x 10 23atoms or subparts.
Hence 1 mole of aluminum will also have 6.02 x 10 23atoms. Hence, it is clear that mass of 1 mole of Aluminium will be equal to 6.02 x 10 23atoms of Aluminium.
Thus,
Mass of 1 mole of Aluminium = Mass of 6.02 x 10 23atoms of Aluminium = 26.98 grams.
