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4 years ago

click photo Tysm if you answer!

Chemistry

2 answers:

STALIN [3.7K]4 years ago

4 0

Answer: False

Explanation:

AC change directions and DC only flow in one direction

nikitadnepr [17]4 years ago

3 0

The answer is false

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How many oxygen atoms are in 2.30 g of quartz?

zzz [600]

4.61*10^22 oxygen atoms in 2.30 quartz

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3 years ago

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Part a classify each solid as a covalent, ionic, metallic, or molecular solid. drag the appropriate items to their respective bi

Anna007 [38]

Explanation:

A compound formed due to transfer of electron from one atom to another is known as an ionic compound. An ionic bond is always formed between a metal and a non-metal.

For example, when potassium donates its one valence electron to iodine then it results in the formation of potassium iodide compound.

And, a compound formed by sharing of electrons between the combining atoms is known as a covalent compound.

For example, fullerenes are an allotrope of carbon where sharing of electrons takes places within the carbon atoms.

Hence, fullerenes are covalent compounds.

Metallic compounds are defined as the compounds in which metal atoms of one or more elements are bonded to each other.

For example, pure potassium will contains only atoms of potassium element. Therefore, it is a metallic compound.

A molecular solid is defined as a substance in which the atoms are held together by Vander waal forces. Due to which they have low melting point.

Generally, non-polar compounds leads to the formation of molecular solids.

For example, frozen carbon dioxide is a molecular solid.

Therefore, we can conclude that the given species are classified as follows.

Fullerenes - covalent

Pure potassium - metallic

Frozen carbon dioxide - molecular solid

Potassium iodide - ionic

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4 years ago

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What are at least 6 compounds of potassium ?

Sergeu [11.5K]

Answer:

nitrate, carbonate, chloride, bromide, cyanide, and sulfate.

Explanation:

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3 years ago

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Draw structures for the eight constitutional isomers with molecular formula c9h12 that contain a benzene ring.

kipiarov [429]

Following are the Nine Constitutional Isomers of Molecular formula C₉H₁₂. In the drawing of isomers the Benzene ring was kept intact. All isomers were drawn among the four carbons. Isomers are shown below,

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3 years ago

For the reaction below, complete the rate expression that relates the change in concentration with respect to time to the rate o

Ann [662]

Answer: Rate in terms of disappearance of $NO$ = $-\frac{1d[NO]}{2dt}$

Rate in terms of disappearance of $Cl_2$ = $-\frac{1d[Cl_2]}{1dt}$

Rate in terms of appearance of $NOCl$ = $\frac{1d[NOCl]}{2dt}$

Explanation:

Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

$2NO+Cl_2\rightarrow 2NOCl$

The rate in terms of reactants is given as negative as the concentration of reactants is decreasing with time whereas the rate in terms of products is given as positive as the concentration of products is increasing with time.

Rate in terms of disappearance of = $-\frac{1d[NO]}{2dt}$

Rate in terms of disappearance of = $-\frac{1d[Cl_2]}{1dt}$

Rate in terms of appearance of $NOCl$ = $+\frac{1d[NOCl]}{2dt}$

5 0

3 years ago

*click photo* Tysm if you answer!

click photo Tysm if you answer!