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
12

In 1913, Henry Moseley discovered a way to calculate the atomic number for each element and it was determined to arrange the per

iodic table by atomic number and not atomic mass. Why is atomic number the better way to organize the elements of the periodic table and not organizing by atomic mass?
A.The atomic mass can vary based on the number of neutrons the atoms of the same element have, so the atomic mass may not be in order.  Also, the atomic number is unique to each element.

B.The atomic number can be different for atoms of the same element, so it makes the patterns of the periodic table more varied.

C.The atomic number can vary based on the number of neutrons the atoms of the same element have, so the atomic mass may not be in order.  Also, the atomic mass is unique to each element.

D.The atomic number and atomic mass are equivalent, so the atomic number is used because it is a smaller number
Chemistry
1 answer:
Morgarella [4.7K]3 years ago
7 0
I'm not exactly sure but I believe that it is A it may be C
You might be interested in
0.75 mol hydrogen sulfide (H2S)
Bumek [7]

Answer:

• Information and media literacy

Directions

Read the instructions for this self-checked activity. Type in your response to each question, and check your answers. At the end of the activity, write

brief evaluation of your work.

Activity

Part A

Now that you have analyzed the resources provided in the lesson, write your own response to the question, What is the main reason the US Civil

War started? Base your

Explanation:

• Information and media literacy

Directions

Read the instructions for this self-checked activity. Type in your response to each question, and check your answers. At the end of the activity, write

brief evaluation of your work.

Activity

Part A

Now that you have analyzed the resources provided in the lesson, write your own response to the question, What is the main reason the US Civil

War started? Base your

4 0
2 years ago
Read 2 more answers
The line of longitude used as the origin in a system of coordinates
3241004551 [841]
Yup, that is correct.
7 0
3 years ago
A certain reaction with an activation energy of 205 kj/mol was run at 485 k and again at 505 k . what is the ratio of f at the h
lapo4ka [179]
Arrhenius' Law relates activation energy, Ea, rate constant, K, and temperature, T as per this equation:

K (T) = A * e ^ (-Ea / RT), where R is the universal constant of gases and A is a constant which accounts for collision frequency..

Then you can find the ration between K's at two different temperatures as:

K1 = A * e ^ (-Ea / RT1)

K2 = A* e ^(-Ea / RT2)

=> K1 / K2 = e ^ { (-Ea / RT1) - Ea / RT2) }

=> K1 / K2 = e ^ {(-Ea/ R ) *( 1 / T1 - 1 T2) }

=> K1 / K2 = e^ { (-205,000 j/mol / 8.314 j/mol*k )* ( 1 / 505K - 1/ 485K) }

=> K1 / K2 = e ^ (2.0134494) ≈ 7.5

Answer: 7.5




8 0
3 years ago
Which method would be best to separate a mixture of sand and gravel?
solniwko [45]
Here, as they both are physical things without any magnetic property & density difference, screening would be best.

In short, Your Answer would be Option C

Hope this helps!
7 0
3 years ago
Read 2 more answers
What do you think is happening at the nanoscale that keeps the salad dressing with an emulsifier mixed?
saveliy_v [14]

Answer:

✨ science ✨ and ✨ big brain stuff ✨

Explanation:

sorry

4 0
2 years ago
Other questions:
  • The electron configurations of some elements are given. Based on the electron configurations, which elements can likely form ion
    13·1 answer
  • A student tries to make diphosphorus trioxide using the reaction below. He adds exactly 20.00 grams of Phosphorus to an excess o
    14·1 answer
  • A partially-enclosed coastal region where sea water mixes with freshwater is called a(n) _______.
    14·1 answer
  • Write a balanced half-reaction for the oxidation of gaseous nitric oxide to aqueous nitrous acid in acidic aqueous solution. Be
    8·1 answer
  • What does the Aufbau principle state?
    10·2 answers
  • How many liters of CO2 are in 4.76 moles? (at STP)
    9·1 answer
  • Can somebody answer this please
    15·1 answer
  • Why does the boiling point of water change at high elevation (maybe in Denver, Colorado, the Mile-High City) compared to sea lev
    5·1 answer
  • Based on this reaction, how many moles of H2 can be obtained starting with 3 mol CH4?
    13·1 answer
  • The volume of a gas is 5.0 L, when the temperature is 5.0 degrees Celsius. If the temperature is increased to 10.0 degrees Celsi
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!