1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
max2010maxim [7]
3 years ago
15

Twomoin tunetons of carbohydraus​

Chemistry
1 answer:
inn [45]3 years ago
7 0

Answer:

Carbohydrates can be divided into two main types: simple and complex. Simple carbohydrates are made up of just one or two sugar units, whereas complex carbohydrates are made up of many sugar units.

You might be interested in
Answer question 4 please and 5
seropon [69]
Its me and me= me.serdtghmjhgfdsaazSDFGHYYUJYHGFDSXAZSDFGHYUJIKUJYHGTFDSXAZSXDCFGHJIKUJHGGFVCDXZVFGHYU7GBFVC  CVFGTY67YTGFVC VFGTY56YTGBV VBG
5 0
3 years ago
Calculate the frequency of the n=2 line in the lyman series of hydrogen
Alona [7]

Answer:

Approximately 2.47\times 10^{15}\; \rm Hz.

Explanation:

The Lyman Series of a hydrogen atom are due to electron transitions from energy levels n \ge 2 to the ground state where n = 1. In this case, the electron responsible for the line started at n = 2 and transitioned to

A hydrogen atom contains only one electron. As a result, Bohr Model provides a good estimate of that electron's energy at different levels.

In Bohr's Model, the equation for an electron at energy level n (

\displaystyle - \frac{k\, Z^2}{n^2} (note the negative sign in front of the fraction,)

where

  • k = 2.179 \times 10^{-18}\; \rm J is a constant.
  • Z is the atomic number of that atom. Z = 1 for hydrogen.
  • n is the energy level of that electron.

The electron that produced the n = 2 line was initially at the

\begin{aligned} &E_{n = 2} \cr &= -\frac{k\, Z^2}{n^2} \cr &= -\frac{2.179 \times 10^{-18} \times 1}{2^2} \cr & \approx -5.4475\times 10^{-19}\; \rm J\end{aligned}.

The electron would then transit to energy level n = 1. Its energy would become:

\begin{aligned} &E_{n = 1} \cr &= -\frac{k\, Z^2}{n^2} \cr &= -\frac{2.179 \times 10^{-18} \times 1}{1^2} \cr & \approx -2.179 \times 10^{-18} \; \rm J\end{aligned}.

The energy change would be equal to

\begin{aligned}&\text{Initial Energy} - \text{Final Energy} \cr &= E_{n = 2} - E_{n = 1} \cr &= -5.4475 \times 10^{-19} - \left(-2.179 \times 10^{-18}\right) \cr & \approx 1.63425\times 10^{-18}\; \rm J \end{aligned}.

That would be the energy of a photon in that n = 2 spectrum line. Planck constant h relates the frequency of a photon to its energy:

E = h \cdot f, where

  • E is the energy of the photon.
  • h \approx 6.62607015\times 10^{-34}\; \rm J \cdot s is the Planck constant.
  • f is the frequency of that photon.

In this case, E \approx 1.63425 \times 10^{-18}\; \rm J. Hence,

\begin{aligned} f &= \frac{E}{h} \cr &\approx \frac{1.63425\times 10^{-18}}{6.62607015\times 10^{-34}} \cr & \approx 2.47 \times 10^{15}\; \rm s^{-1}\end{aligned}.

Note that 1 \; \rm Hz = 1 \; \rm s^{-1}.

6 0
3 years ago
Which best characterizes a crystal?
White raven [17]
A high - energy state of matter made up of a swirling, ionized gas

Halite crystal is growing and can attach very quickly and eventually form a smooth, stable faces where new atoms can easily attach themselves.
8 0
3 years ago
Read 2 more answers
What are the components of a nucleotide
balandron [24]

Answer:

components of a nucleotide - DNA and RNA

7 0
3 years ago
Read 2 more answers
Please help y’all I don’t understand
ycow [4]

Answer:

Both atoms achieve a more stable configuration

Explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • Pls help me for this one :) is hard for me thx
    14·2 answers
  • The eastern coast of South America and the western coast of Africa are separated by the Atlantic Ocean. If scientists find the s
    9·1 answer
  • What is the difference between a molecular formula and a molecular model?
    6·2 answers
  • Ethene is converted to ethane by the reaction flows into a catalytic reactor at 25.0 atm and 250.°C with a flow rate of 1050. L/
    11·1 answer
  • The volume of solution in a test tube is measured to be 0.0067 liter. Which digits in the measurement are significant figures?
    9·2 answers
  • 3. How did organizing the periodic table by atomic number help scientists?
    7·1 answer
  • A player uses a hockey stick to push a puck at a constant velocity across the ice. The weight of the puck is 1.70 N. The coeffic
    9·2 answers
  • Which of the following pairs of elements is most likely to form an ionic compound? (Hint - question 4 tells you what types of el
    5·1 answer
  • What is the change in temperature when 75 grams of water releases -2657 J of energy? The specific heat of water is 4.18 J/g°C
    11·1 answer
  • A balloon is placed in a vacuum chamber (a container that all of the air can be pumped out of) and as the air is removed, the ba
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!