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4 years ago

Why are the molecules of hydrocarbons nonpolar?

2 answers:

7 0

Because hydrocarbons consist only C-H bonds, which are non-polar. When you look at the table of electronegativity (Pauling scale), you see, that the difference between the electronegativities of carbon and hydrogen is much smaller than that of nitrogen and hydrogen.

laiz [17]4 years ago

4 0

This is not the case in the hydrocarbon tail. The electronegativity of hydrogen and carbon are very similar, so the electron cloud is distributed evenly over the two atoms. Carbon-hydrogen bonds are said to be non-polar because they do not have positive and negative poles within themselves. Hope this helps.

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What is the correct formula for Tin (IV) chromate nonahydrate?

Mashcka [7]

Answer:

Sn(CrO4)2 or Cr2O8Sn

Explanation:

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3 years ago

Explain how the Law of Conservation of Mass is demonstrated In photosynthesis and cellular Respiration chemical equations. (Less

Oksi-84 [34.3K]

Explanation:

According to the law of conservation of mass, In a chemical reaction, mass is neither created nor destroyed. In other words, the total mass for the reactants needs to equal the total mass of the products.
In photosynthesis the reactants are 6 carbon dioxide, 6 water and sunlight. The mass of these reactants adds to equal the mass of the products, which are 1 glucose and 6 oxygen.
Cellular respiration on the other hand uses glucose and oxygen gas to produce water, carbon dioxide, and a usable form of energy known as ATP.
Cellular respiration is the opposite of photosynthesis, such that the products of photosynthesis are the reactants of cellular respiration. Cellular respiration also obeys the law of conservation of mass.

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3 years ago

Read the given expression.

muminat

Answer:

Choice number 2.

Explanation:

I searched it up.

7 0

3 years ago

Read 2 more answers

What are the concentrations of Cu2+, NH3, and Cu(NH3)42+ at equilibrium when 18.8 g of Cu(NO3)2 is added to 1.0 L of a 0.800 M s

Svetllana [295]

Answer:

Explanation:

Cu(NO₃)₂ + 4NH₃ = Cu(NH₃)₄²⁺ + 2 NO₃⁻

187.5 gm 4M 1 M

187.5 gm reacts with 4 M ammonia

18.8 g reacts with .4 M ammonia

ammonia remaining left after reaction

= .8 M - .4 M = .4 M .

187.5 gm reacts with 4 M ammonia to form 1 M Cu(NH₃)₄²⁺

18.8 g reacts with .4 M ammonia to form 0.1 M Cu(NH₃)₄²⁺

At equilibrium , the concentration of Cu²⁺ will be zero .

concentration of ammonia will be .4 M

concentration of Cu(NH₃)₄²⁺ formed will be 0.1 M

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3 years ago

If something is a hard solid, that can dissolve in water, and has a high melting point, is it Ionic of Covalent?

34kurt

Answer:

Ionic 

If something is a hard solid, that can dissolve in water, and has a high melting point are ionic substances, because they are hard solids due to strong electrostatic force between particles and and they have high melting points because of their strong attraction between the particles which needed more energy in order to break down and melt .....

their one property is to dissolve in water because they are generally non polar which dissolves easily in polar liquids like water.

i hope it helped you.... 

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3 years ago