What is the defonishon of a crystalline structure?

1 answer:

7 0

The arrangement in space and the interatomic distances and angles of the atoms in crystals, usually determined by x-ray diffraction measurements

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There are 6.022 x 10^23 atoms of Hg in 1 mole of Hg. The number of atoms in 4.5 moles of Hg can be found by multiplying 4.5 by 6

serious [3.7K]

Answer:

D. 27.099 x 10²³.

Explanation:

It is known that every 1.0 mole of an atom contains Avogadro's no. (6.022 x 10²³) atoms.

So, 4.5 mol of Hg will contain:

(4.5 mol)(6.022 x 10²³) = 27.099 x 10²³ atoms.

So, the right choice is: D. 27.099 x 10²³.

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3 years ago

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Which of these are neutral salts? Check all that apply.

Elden [556K]

The following are neutral salts: NANO3, BaBr2 AND Ba[OH]2.
Neutral salts are those salts that are formed when a strong base react with a strong acid. In those neutralization reactions, the base completely neutralize the acid to form a neutral salts.

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3 years ago

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Consider each possible structure of carbon dioxide, c o 2. Determine whether the structure is correct and justify your decision.

Mrrafil [7]

This structure is correct due to the total number of bonds and electrons

We employ the octet rule, which states that all atoms in a compound are expected to follow, to check the accuracy of any chemical structure. The octet rule is precisely satisfied for each atom in the depicted structure of carbon IV oxide. The valence shell of each atom in the molecule is surrounded by eight electrons. We may thus infer that this structure is accurate given the total number of bonds and electrons since CO2 has sixteen valence electrons.

It possesses a negative charge of 1.602176634 coulombs, the basic unit of electric charge, which is comparable to its negative charge. The rest mass of an electron is 9.1093837015 10^-31 kg, or just 1/1,836 the mass of a proton. An electron is therefore considered to have practically negligible mass in comparison to a proton or neutron, and its matter is not taken into consideration when calculating an atom's mass number.

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