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
IrinaVladis [17]
3 years ago
9

Which two elements on the periodic table are in the same period? 1:b and in 2:na and s 3:k and ba 4:se and te

Chemistry
2 answers:
KengaRu [80]3 years ago
8 0
The answer will be 4
zhannawk [14.2K]3 years ago
5 0
Se and te
hope this helps xx
You might be interested in
Calculate the speed of a marble that rolls 9 cm in 4 seconds
cupoosta [38]

Answer:

2.25

Explanation:

9/4

6 0
3 years ago
Draw the major organic product in the reaction scheme below. Be sure to clearly show stereochemistry (if applicable).
Juliette [100K]

Answer:

see explanation below

Explanation:

You are missing the reaction scheme, but in picture 1, I found a question very similar to this, and after look into some other pages, I found the same scheme reaction, so I'm gonna work on this one, to show you how to solve it. Hopefully it will be the one you are asking.

According to the reaction scheme, in the first step we have NaNH2/NH3(l). This reactant is used to substract the most acidic hydrogen in the alkine there. In this case, it will substract the hydrogen from the carbon in the triple bond leaving something like this:

R: cyclopentane

R - C ≡ C (-)

Now, in the second step, this new product will experiment a SN2 reaction, and will attack to the CH3 - I forming another alkine as follow:

R - C ≡ C - CH3

Finally in the last step, Na in NH3 are reactants to promvove the hydrogenation of alkines. In this case, it will undergo hydrogenation in the triple bond and will form an alkene:

R - CH = CH - CH3

In picture 2, you have the reaction and mechanism.

6 0
3 years ago
Why was the cell did covered only after the invention of the microscope
nikdorinn [45]

They are too small to see with the naked eye

6 0
3 years ago
Read 2 more answers
Why are journal articles important in the spread of scientific knowledge?
yarga [219]

Answer:

When published, each article expands the library of scientific literature available to all scientists and contributes to the overall knowledge base of the discipline of science. They report new research for the first time.

6 0
3 years ago
What is the oxidation state of nitrogen in nano2
TiliK225 [7]

Answer:

Therefore, the oxidation state of N in NaNO₂ is +3

Explanation:

Problem: calculating the oxidation state of nitrogen N in NaNO₂

let us denote the oxidation number of Nitrogen as N:

We know from the periodic table that Na has an oxidation number of +1 i.e it will readily want to lose 1 electron so as to complete its octet.

Oxygen is known to have an oxidation number of -2

Summation of the oxidation number of each atoms is 0 for neutral compound.

Therefore to calculate the oxidation state of Nitrogen in NaNO₂, we express as:

                              +1 + N + (-2 x 2) = 0

                                1 + N = 4

                                 N = 4-1 = +3

Therefore, the oxidation state of N in NaNO₂ is +3

3 0
3 years ago
Other questions:
  • While soils are an important part of the global carbon cycle, they are not a part of the nitrogen and sulfur cycles.
    12·1 answer
  • How is the scientific meaning of salt different from the common meaning of salt
    10·1 answer
  • A condor has a wing span of 3.05 m. What is the wing span in feet
    11·1 answer
  • What is the relationship between the frequency of electromagnetic waves and their wavelengths? A. As frequency increases, wavele
    8·2 answers
  • According to Dalton, what happens to atoms during a chemical reaction? Atoms gain or lose energy. Atoms are rearranged. Old atom
    14·1 answer
  • When and how was discovered mercury?
    8·1 answer
  • Which volume of 2.0 M NaOH(aq) is needed to completely neutralize 24 milliliters of 1.0 M HCl(aq)?
    5·1 answer
  • Use the balanced equation given below to solve the following problem; Calculate the volume in liters of CO produced by the react
    8·1 answer
  • What is a limited resource in the use of nuclear fission for energy?
    14·1 answer
  • What is the polystyrene?​
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!