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
yKpoI14uk [10]
3 years ago
7

(worth 10pts!!!!!!) What did Dmitri Mendeleev contribute to science? A. He arranged the first periodic table. B. He developed th

e first model of the atom. C. He discovered many unknown elements . D. He developed the first atomic theory
Chemistry
2 answers:
MAVERICK [17]3 years ago
6 0

Answer:

A.

Explanation:

vesna_86 [32]3 years ago
3 0

Answer:

A. He arranged the first periodic table.

Explanation:

You might be interested in
What occurs when ions from the the sun strike air molecules
damaskus [11]
Auroras occur when ions from the Sun strike air molecules, causing them to give off bright colors of light.-google
6 0
3 years ago
Determine the highest occupied energy level in the
aleksandrvk [35]
I think its B!!! (: (:
6 0
3 years ago
Is there a way to stop radioactive decay?
Wittaler [7]
The chain reaction is easy to stop. Just add a neuron absorbing material. The Control Rods in rectors can do that You just SCRAM (put the rods all the way in) or add something like Boron and the chain reaction stops. 

<span>The problem is the radioactive waste. Those isotopes break down and release heat spontaneously, no neutrons required. The only known way to stop or slow radioactive decay down is to slow time down by moving at relativistic speed or near orbit to a black hole.</span>
4 0
3 years ago
Witch wave is mad up of vibrating electric and magnetic fields that can move through space at the speed of light
8_murik_8 [283]

Answer:

Hiya! Your answer would be an Electromagnetic Wave.

Explanation:

Electromagnetic Wave is an electromagnetic wave that travels through space at the speed of light at about 300,000 kilometers per second. So when we talk about light traveling in waves, we can also talk about frequency, or the number of wavelengths that pass a certain point in a given length of time. We usually measure this as the number of wavelength cycles that pass per second. The units for this measurement are Hertz (hz).

So, if the wavelength of a light wave is shorter, that means that the frequency will be higher because one cycle can pass in a shorter amount of time. This means that more cycles can pass by the set point in 1 second. Likewise, a light wave that has a longer wavelength will have a lower frequency because each cycle takes a longer time to complete.

Hope I helped and I hope you get it right! :). Have a lovely day my friend!

~Bella

3 0
3 years ago
AgI + KNO3<br>What type of reaction is this?
emmasim [6.3K]

Answer:

double replacement

Explanation:

4 0
3 years ago
Other questions:
  • How do you perform calculations relating to isotopes. describe please
    7·1 answer
  • What is the partial pressure of the third gas, helium?
    13·1 answer
  • What is the most reactive metal on the periodic table?
    7·1 answer
  • _______ waves occur when the motion of the medium is parallel to the direction of the wave.
    11·1 answer
  • __________ are composed of two or more covalently bonded atoms.
    12·2 answers
  • Which form of energy is increasing as a car drives up a hill?
    8·1 answer
  • What makes it possible to separate substances in a mixture?
    15·1 answer
  • A transverse wave is observed to be moving along a lengthy rope. Adjacent crests are positioned 2.4 m apart. Exactly six crests
    11·1 answer
  • Someone help me please- Im stuck, will give brainliest
    5·1 answer
  • in the reaction: mg(s) 2hcl(aq) → mgcl2(aq) h2(g) how does the equilibrium shift if the hcl concentration is increased? to the p
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!