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3 years ago

Jim draws a wave that looks like this wave:

Chemistry

2 answers:

Travka [436]3 years ago

8 0

wave length is what he decreased

ZanzabumX [31]3 years ago

8 0

Answer:

I have a question like this on my test!

The answer is wavelenth. :)

Hope This helps!!

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Organic reactions proceed at a very _______ rate

Savatey [412]

ANSWER:

Organic reactions proceed at a very SLOWER rate.

Reasoning:

Organic reactions are chemical reactions involving organic compounds. They are less soluble in water than inorganic compounds. Therefore, organic compounds react at a slower rate and produce a much more complex set of products than inorganic compounds.

6 0

3 years ago

If a temperature increase from 12.0 ∘c to 22.0 ∘c doubles the rate constant for a reaction, what is the value of the activation

Alex73 [517]

Answer: 48,501 J/mol

Explanation:

1) Action barrier = activation energy = Ea

2) Data:

i) T₁ = 12°C = 12 + 273.15 K = 285.15K

ii) T₂ = 22°C = 22 + 273.15 K = 295.15 K

iii) rate constant = k: k₂ / k₁ = 2

iv) Ea = ?

3) Formula:

Arrhenius' law gives the relationship between the constant of reaction and the temperature:

$k=Ae^{-\frac{Ea}{RT}}$

4) Solution

By arranging the formula, you get:

㏑[k₂/k₁] =Ea/R [1/T₁ - 1/T₂]

Replace k₂ = 2k₁; T₁ = 285.15; and T₂ = 295.15

ln[2] = Ea/8.314 J/K mol × [1/285.15 - 1/295.15]K

Ea = ln [2] × 8.314 J/K mol / [1.18818×10⁻⁴K] = 48,501 J/mol

6 0

4 years ago

When bases dissolve in water they release what type of negative ion?

Leto [7]

A base generally releases a hydroxide ion (OH-) when dissolved in water.

There are exceptions, such as ammonia NH3, which acts as a base but does not produce OH- ions. There are three definitions of acids and bases (Arrhenius, Bronsted-Lowry, and Lewis) and each one looks at acid/base characteristics differently. OH- donation is the Arrhenius definition.

4 0

4 years ago

How do electrons typically fill energy levels?

fenix001 [56]

The electrons fill energy levels from the lowest available energy level, based of three typical rules.

1) Follow Aufbau rule: fill from lower to higher energy levels (1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p)

2) Pauly exclusion principle: two electrons can not have the same four quantum numbers

3) Hund rule: if the orbitals have the same energy, the electrons must go to different orbitals before two occupies the same orbital.

7 0

4 years ago

Using the periodic table as a reference, which elements could bond to form a compound most like NaCl?

pychu [463]

step by step

Na(sodium)=2.8.1

Cl (Chlorine)=2.8.7. sodium will give the chlorine the 1 valence electron to become stable ions.

answer

pottasium. (2.8.8.1) and Flourine(2.7)

4 0

3 years ago