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
Anni [7]
3 years ago
14

How are the periods, or horizontal rows, on a periodic table ordered from left to right? (2 points)

Chemistry
2 answers:
Nesterboy [21]3 years ago
8 0
The answer is the second one .......................
Anarel [89]3 years ago
6 0
#2
They are ordered by increasing number of protons (aka atomic number)
You might be interested in
Please help me<br> 5. Where is potential energy decreasing?<br> А B C D
Nataly [62]

Answer:

D

Explanation:

I believe it is D. your kinetic energy would be at b. A, the cart would be going at a constant rate, because there is no hill or steep slope.

7 0
2 years ago
Read 2 more answers
The molar mass of Beryllium (Be)
e-lub [12.9K]
The molar mass of Beryllium is 9.012182 u (symbol I can't put down) 0.000003 U
8 0
3 years ago
25 points! Help please
Sedbober [7]

Answer:

I think its b

Explanation:

but I wouldn't depend on this answer

4 0
3 years ago
Read 2 more answers
Is aluminum flammable
VashaNatasha [74]
Yes, aluminum is flammable
3 0
3 years ago
Read 2 more answers
Use bond energies to determine δhrxn for the reaction between ethane and chlorine. ch3ch3(g)+cl2(g)→ch3ch2cl(g)+hcl(g)
STALIN [3.7K]
For this reaction to proceed, the following bond breaking should occur: 

*one C-H bond
* one Cl-Cl bond

After, the following bond formations should occur:
*one C-Cl bond
*one H-Cl bond

Now, add the bond energies for the respective bond energies which can be found in the attached picture. For bond formations, energy is negative. For bond breaking, energy is positive.

ΔHrxn = (1)(413) + (1)(242) + 1(-328) + 1(-431) = <em>-104 kJ</em>

3 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following is a function of the geosphere
    5·1 answer
  • Why methanol is soluble in acetone
    10·1 answer
  • Need this ASAP!
    5·1 answer
  • For the reaction 2Na + Cl2 → 2NaCl, how many grams of chlorine gas are required to react completely with 57.5 mol of sodium?
    5·1 answer
  • The corner where a perfume is initally sprayed has:
    11·2 answers
  • Which of the following lists contain ONLY metals?
    14·1 answer
  • What is the best definition of physics?
    11·2 answers
  • What could reduce the heat island effect around cities?
    11·1 answer
  • PLEASE HELP ME NOW! WHATS NEWTONS FIRST LAW?!!!
    13·1 answer
  • PLEASE HELP!!!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!