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
PilotLPTM [1.2K]
3 years ago
8

Use the periodic table to answer the questions below.

Chemistry
2 answers:
Gekata [30.6K]3 years ago
4 0
The electron configuration for N is 1s^2 2s^2 2p^3, or it could be [He]2s^2 2p^3 but you don’t have the diagram out so I can’t say the definite answer
Keith_Richards [23]3 years ago
4 0

Answer:

the second choice !! B

Explanation:

You might be interested in
Hydrogenation reactions are used to add hydrogen across double bonds in hydrocarbons and other organic compounds. use average bo
Mamont248 [21]
H2(g) +C2H4(g)→C2H6(g)
H-H +H2C =CH2→H3C-Ch3
2C -H bonds and one C-C bond are formed while enthalpy change (dH) of the reaction,
H-H: 432kJ/mol
C=C: 614kJ/mol
C-C: 413 kJ/mol
C-C: 347 kJ/mol
dH is equal to sum of the energies released during the formation of new bonds or negative sign, and sum of energies required to break old bonds or positive sign.
The bond which breaks energy is positive.
432+614 =1046kJ/mol
Formation of bond energy is negative
2(413) + 347 = 1173 kJ/mol
dH reaction is -1173 + 1046 =-127kJ/mol 
7 0
3 years ago
How many magnesium atoms are there in 1 molecule
jasenka [17]
It is avogrado number. One molecue of magnesium has 6.023 x 10^23 atoms
4 0
3 years ago
Read 2 more answers
When sugar dissolves in water are covalent bonds broken?
Amanda [17]
Gle's cache of http://www.middleschoolchemistry.com/lessonplans/chapter5/lesson4<span>. It is a snapshot of the page as it appeared on 21 Oct 2017 07:24:57 GMT.</span>
7 0
3 years ago
Positional isomers
zimovet [89]
<span>The answer is D)<em> </em>are compounds that have the same number and types of atoms but are arranged differently.

Source: <em>just took the test :)</em></span>
7 0
3 years ago
10) In order to make spaghetti cook faster, a chef adds salt to water. How many moles of salt would he need to add to 1.0 kg wat
Vadim26 [7]
The answer is 4.9 moles.
Solution: 
Using the equation for boiling point elevation Δt,
     Δt = i Kb m 
we can rearrange the expression to solve for the molality m of the solution:
     m = Δt / i Kb 

Since we know that pure water boils at 100 °C, and the Ebullioscopic constant Kb for water is 0.512 °C·kg/mol, 
     m = (105°C - 100°C) / (2 * 0.512 °C·kg/mol)
         = 4.883 mol/kg 

From the molality m of the solution of salt added in a kilogram of water, we can now find the number of moles of salt: 
     m = number of moles / 1.0kg
     number of moles = m*1.0kg 
                                  = (4.883 mol/kg) * (1.0kg)
                                  = 4.9 moles
4 0
3 years ago
Other questions:
  • What metal is easily oxidized in rocks?
    9·1 answer
  • In a three-step calculation, would you round your answer after the first, second, or third step?
    8·1 answer
  • Why is water not a good extraction solvent for trimyristin?
    5·1 answer
  • (-5)+(+7)-(-4) + (+12)<br>A 8<br>B 10<br>C 18<br>d 20<br>​
    12·1 answer
  • Substance A undergoes a first order reaction A  B with a half- life of 20 min at 25 °C. If the initial concentration of A ([A]◦
    6·1 answer
  • How many nanometers are in 5.32 x10^10 centimeters?
    10·2 answers
  • What is the mass of sodium (Na) in 50 grams of table salt (NaCl)? Show<br> your work.
    11·1 answer
  • Which statement best describes mechanical energy?
    13·1 answer
  • True or False:
    13·1 answer
  • Which pictures shows the proper structure of the water molecule? Click the picture to see each choice.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!