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Allisa [31]
2 years ago
13

Why do you think we are able to study the atom in the modern world?

Chemistry
1 answer:
andriy [413]2 years ago
6 0
Advancement in technology to help with detailed studies
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Which statement accurately compares the trends in atomic number and atomic mass in the periodic table
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Answer: is C

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Both the atomic mass and the atomic number increase from left to right

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3 years ago
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An analysis of physical, chemical and microscopic properties of urine is called?​
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What volume is needed to store 0.80 moles of helium gas at 204.6 kpa and 300 k?
shepuryov [24]
Answer is: 9,7 L is needed to store helium gas.
n(He) = 0,80 mol.
p(He) = 204,6 kPa.
T = 300 K.
R = 8,314 J/K·mol; universal gas constant.
Use ideal law eqaution: p·V = n·R·T.
V = n·R·T / p.
V(He) = 0,80 mol · 8,314 J/K·mol · 300 K ÷ 204,6 kPa.
V(He) = 9,75 L.


3 0
2 years ago
Dry air can be liquified at temperatures below 78.8K. This material is an
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7 0
3 years ago
A substance that contains more hydroxide ions than hydronium ions in solution could have which pH value?
Hunter-Best [27]
Hydronium ions are basically H+ ions.
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This means that the substance is more basic.
 and basic substances a pH>7.
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