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3 years ago

Name two other substances with giant covalent structures

Chemistry

2 answers:

Lesechka [4]3 years ago

6 0

Answer:

Diamond and graphite forms of carbon, silicon dioxide (silica)

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lesantik [10]3 years ago

4 0

Answer:

Diamond and graphite forms of carbon) and silicon dioxide (silica) are examples of giant covalent structures (lattices) of atoms. All the atoms in these structures are linked to other atoms by strong covalent bonds and so they have very high melting points.

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Consider the following reactants:

sdas [7]

Answer:

A. 3NaOH(aq)+Fe(NO3)3(aq) ---> Fe(OH)3 (solid)+ 3NaNO3(aq)

B. Double replacement reaction

AB +CD ---> AD + CB

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3 years ago

What is the correct net ionic equation, including all coefficients, charges, and phases, for the following set of reactants? Ass

jeyben [28]

Answer : The net ionic equation will be,

$Ba^{2+}(aq)+SO_4^{2-}(aq)\rightarrow BaSO_4(s)$

Explanation :

In the net ionic equations, we are not include the spectator ions in the equations.

Spectator ions : It is defined as the ions present on reactant and product side that do not participate in the reactions. That means the same ions present on both the sides.

The given balanced ionic equation will be,

$BaSO_4(aq)+H_2SO_4(aq)\rightarrow BaSO_4(s)+H_2O(aq)$

The ionic equation in separated aqueous solution will be,

$Ba^{2+}(aq)+2OH^-(aq)+2H^+(aq)+SO_4^{2-}(aq)\rightarrow BaSO_4(s)+2H^+(aq)+2OH^-(aq)$

In this equation, $H^+\text{ and }OH^-$ ions are the spectator ions.

By removing the spectator ions from the balanced ionic equation, we get the net ionic equation.

The net ionic equation will be,

$Ba^{2+}(aq)+SO_4^{2-}(aq)\rightarrow BaSO_4(s)$

8 0

3 years ago

What does each letter mean in the acronym pufart mean

Tcecarenko [31]

Answer:

The acronym is used to remember evidence of a chemical change.

Explanation:

P=precipitate

U=unexpected color change

F=fizzing

A=aroma

R=replaced by a new substance

T= temperature change

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3 years ago

Temperature is not a direct measure of the thermal energy of a system. The total thermal energy of a system depends on its tempe

11111nata11111 [884]

Answer:

briana

yes

Explanation:

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3 years ago

If a naturally occurring sample of an unidentified element is found to contain three isotopes (A, B, and C) and consists of 90.5

aivan3 [116]

If a naturally occurring sample of an unidentified element is found to contain three isotopes (A, B, and C) and consists of 90.5% isotope A (mass number 20), 0.3% isotope B (mass number 21), and 9.3% isotope C (mass number 22), the atomic weight of the element measured from the sample will be greater than 21 amu.

To calculate the average atomic mass, multiply the fraction through the mass number for every isotope, then add them together. Whenever we do mass calculations concerning elements or compounds (combos of elements), we usually use average atomic loads.

For instance, carbon-14 is a radioactive isotope of carbon that has six protons and 8 neutrons in its nucleus. We name it carbon-14 because the overall range of protons and neutrons within the nucleus also called the mass number, provides up to fourteen (6+8=14).

Together, the quantity of protons and the range of neutrons determine an detail's mass variety. Due to the fact, that an element's isotopes have barely unique mass numbers, the atomic mass is calculated by obtaining the suggested mass numbers for its isotopes.

Learn more about atomic mass here brainly.com/question/1358482

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3 0

2 years ago