Answer:
Electronegativity varies in a predictable way across the periodic table. Electronegativity increases from bottom to top in groups, and increases from left to right across periods. Thus, fluorine is the most electronegative element, while francium is one of the least electronegative.Explanation:
Atomic mass :
29.5 * 203 + 70.5 * 205 / 100 =
5988.5 + 14452.5 / 100 =
20441 / 100 = 204.41 u
atomic mass of Thallium <span>204.41 u
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Answer:
2,2,3- trimethylhexane because it has more carbon atoms than pentane.
Explanation:
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In this case, since the physical properties of organic compounds are intensified as the number of carbon atoms start increasing on it, the larger the amount of carbon atom, the higher the boiling point since more energy is required to allow the liquid-phase molecules to transcend to the vapor-phase.
In such a way, since pentane has five carbon atoms and 2,2,3- trimethylhexane has nine carbon atoms, 2,2,3- trimethylhexane has the highest boiling point.
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Answer:
Explanation:
These numbers are all approximate. You will have to consult your text to get exact numbers.
density = mass (grams)/ volume(mL)
density of water = 1 gram / 1 mL
given volume = 30 mL
mass = ?
density = mass / volume
1 = mass / 30 mL
mass = 1 * 30 mL = 30 grams
1 mol of water = 18.02 grams (2 * 1.01 + 16)
x mol of water = 30 grams
18.02 * x = 1 * 30
x = 30/18.02
x = 1.66 mol
Note this is the answer to the question that asks how many mols are in 30 mL of water.
1 mol of anything is 6.02 * 10^23 parts
1.66 mol = x
1*x = 1.66 * 6.02*10^23
x = 1.0022 * 10^24 particles
Answer: there are 1.0022*10^24 molecules of water in 30 mL of water
Answer:
I think c
Explanation:
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