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2 years ago

If the bond enthalpy for a C-H bond is 413 kJ, what will happen when the C-H bond is broken

Chemistry

1 answer:

Reil [10]2 years ago

4 0

If the bond enthalpy for a C-H bond is 413 kJ, what will happen when the C-H bond is broken

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A blu-ray laser has a wavelength of 405nm. In what region of the electromagnetic spectrum is this radiation? What is its frequen

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Answer:

It lies in in the visible region.

Frequency: is 7.407 × 10^-14 Hz

${ \bf{V = f \lambda}} \\ { \tt{3.0 \times {10}^{8} = f \times (405 \times {10}^{ - 9}) }} \\ { \tt{f = 7.407 \times {10}^{14} \: hertz}}$

Explanation:

V is speed of light.

f is frequency

lambda is the wavelength

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2 years ago

A reaction in which a substance reacts with oxygen, emitting heat and forming oxygen-containing compounds is an example of a(n):

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Answer: B) combustion reaction.

Explanation:

A) acid-base reaction: When an acid reacts with a base, to form metal salt and water, this type of reaction is Acid Base reaction.

Example: $HCl+NaOH\rightarrow NaCl+H_2O$

B) combustion reaction: When a hydrocarbon reacts with oxygen to produce carbon dioxide and water, this type of reaction is combustion reaction.

$CH_4+2O_2\rightarrow CO_2+2H_2O$

C) precipitation reaction: a reaction in which aqueous solution of two compounds on mixing react to form an insoluble compound which separate out as a solid are called precipitation reactions.

$Na_2SO_4(aq)+BaCl_2(aq)\rightarrow BaSO_4(s)+NaCl(aq)$

D) gas evolution reaction: a reaction in which one of the product is formed as a gas.

$CaCO_3(s)\rightarrow CaO(s)+CO_2(g)$

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3 years ago

38 When a sample of a gas is heated in a sealed, rigid container from 200. K to 400. K, the pressure exerted by the gas is

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Increased by a factor of 200

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3 years ago

What is an example of reactivity?

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Reactivity is an impetus For which a chemical substance undergoes A chemical either by itself or with another materialWith an overall release of energy

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2 years ago

How is the energy that is carried in an ATP molecule released to provide usable energy?

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The bond holding the last phosphate group breaks that is why is the energy that is carried in an ATP molecule released to provide usable energy.

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2 years ago

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