3 years ago

I sorta forgot the answer someone help

Chemistry

2 answers:

Maslowich3 years ago

5 0

Answer:

The energy stored within things :)

mezya [45]3 years ago

3 0

i think second one is the right answer

-the energy stored within things

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Please help 15 points

Rus_ich [418]

Nitrogen gained 4 electrons.

Because Nitrogen's redox number went from +6 to +2, it must have gained 4 electrons (-4) in order to achieve this number. Thus, Nitrogen is reduced.

4 0

3 years ago

A reaction will be spontaneous at all temperatures if the reaction???

lisabon 2012 [21]

D is endothermic and

6 0

3 years ago

What is the frequency of a particular type of radiation in hertz given that the wavelength is 4.40 times 10

Reil [10]

Answer:

$Frequency=6.81\times 10^{14}\ Hz$

Explanation:

The relation between frequency and wavelength is shown below as:

$c=frequency\times Wavelength$

c is the speed of light having value $2.998\times 10^8\ m/s$

Given, Wavelength = $4.40\times 10^{2}$ nm

Also, 1 m = $10^{-9}$ nm

So,

Wavelength = $440\times 10^{-9}$ m

Thus, Frequency is:

$Frequency=\frac{c}{Wavelength}$

$Frequency=\frac{2.998\times 10^8}{440\times 10^{-9}}\ Hz$

$Frequency=6.81\times 10^{14}\ Hz$

5 0

3 years ago

What would happen to a weak acid dissociation equilibrium if more reactants

Evgen [1.6K]

K is unchanged. The equilibrium constant wouldn't change. it is based on le chateliers principle.

3 0

3 years ago

if you have a solution that contains 46.85 g of codeine, C18H21NO3, in 125.5 g of ethanol, C2H5OH, what is the mole fraction of

OverLord2011 [107]

Answer:

The mole fraction of codeine is 5.4%

Explanation:

Mole fraction = Mole of solute / Total moles (Mole solute + Mole solvent)

Solute (Codeine)

Molar mass 299.36 g/m

Mass / Molar mass = Mole → 46.85 g /299.36 g/m = 0.156 moles

Solvent (Ethanol)

Molar mass 46.07 g/m

125.5 g / 46.07 g/m = 2.724 moles

Mole fraction (Codeine) 0.156 / (0.156 + 2.724) → 0.054

3 0

3 years ago